Harnawa Insulations Private Limited

Glass Epoxy Laminated Sheets are high-performance electrical and mechanical insulation laminates manufactured from woven fiberglass cloth impregnated with epoxy resin, consolidated under high temperature and pressure. These sheets are widely recognized for their exceptional dielectric strength, high mechanical rigidity, chemical resistance, moisture resistance, and thermal stability.

These laminates belong to the NEMA Grade G10 / FR4 / EPGC series, depending on fire retardancy and temperature requirements. Glass Epoxy Laminated Sheets are used extensively in motors, transformers, switchgear, PCB supports, electrical insulation components, jig fixtures, machinery fabrication, busbar supports, slot wedges, and structural insulation assemblies.

With excellent strength-to-weight ratio, dimensional stability, and machinability, these sheets can be CNC machined into complex profiles such as spacers, terminal plates, insulating blocks, fixtures, wedges, and customized electrical components.

Key Features

• High dielectric strength and electrical insulation
• Excellent mechanical rigidity and tensile performance
• Thermal resistance suitable for Class F & Class H insulation
• Moisture resistant, chemical resistant, and flame retardant (FR4)
• Extremely stable under thermal cycling & electrical stress
• Smooth finish and uniform density
• Outstanding machinability—ideal for CNC components
• Suitable for electrical & mechanical structural parts

Applications

• Electrical motor insulation components
• Transformer insulation parts, barriers & supports
• PCB supports, electronic housings & insulating blocks
• HV/LV busbar supports and terminal plates
• Slot wedges and coil supports
• Mechanical jigs, fixtures, gears and industrial tooling
• Aerospace, railway, EV, and automation components
• High-voltage electrical equipment & switchgear

Technical Range

• Material: Epoxy Resin + Woven Fiberglass Cloth
• Grades: G10 / FR4 / EPGC Series
• Thermal Resistance: Class F (155°C) / Class H (180°C)
• Dielectric Strength: Very High
• Thickness: 0.5 mm – 100 mm
• Sheet Sizes: 1000×2000 mm / 1020×1220 mm / 1220×2440 mm
• Colors: Green / Yellow / Light Green / Natural
• Water Absorption: <1%
• Fire Retardancy: Available in FR4 (UL94-V0)

Advantages

• Excellent balance of electrical + mechanical properties
• Flame-retardant and high-temperature stable
• Long-term durability under harsh operating conditions
• Suitable for precision machined parts

Glass Epoxy Laminated Sheets are high-performance electrical and mechanical insulation laminates manufactured from woven fiberglass cloth impregnated with epoxy resin, consolidated under high temperature and pressure. These sheets are widely recognized for their exceptional dielectric strength, high mechanical rigidity, chemical resistance, moisture resistance, and thermal stability.

These laminates belong to the NEMA Grade G10 / FR4 / EPGC series, depending on fire retardancy and temperature requirements. Glass Epoxy Laminated Sheets are used extensively in motors, transformers, switchgear, PCB supports, electrical insulation components, jig fixtures, machinery fabrication, busbar supports, slot wedges, and structural insulation assemblies.

With excellent strength-to-weight ratio, dimensional stability, and machinability, these sheets can be CNC machined into complex profiles such as spacers, terminal plates, insulating blocks, fixtures, wedges, and customized electrical components.

Key Features

• High dielectric strength and electrical insulation
• Excellent mechanical rigidity and tensile performance
• Thermal resistance suitable for Class F & Class H insulation
• Moisture resistant, chemical resistant, and flame retardant (FR4)
• Extremely stable under thermal cycling & electrical stress
• Smooth finish and uniform density
• Outstanding machinability—ideal for CNC components
• Suitable for electrical & mechanical structural parts

Applications

• Electrical motor insulation components
• Transformer insulation parts, barriers & supports
• PCB supports, electronic housings & insulating blocks
• HV/LV busbar supports and terminal plates
• Slot wedges and coil supports
• Mechanical jigs, fixtures, gears and industrial tooling
• Aerospace, railway, EV, and automation components
• High-voltage electrical equipment & switchgear

Technical Range

• Material: Epoxy Resin + Woven Fiberglass Cloth
• Grades: G10 / FR4 / EPGC Series
• Thermal Resistance: Class F (155°C) / Class H (180°C)
• Dielectric Strength: Very High
• Thickness: 0.5 mm – 100 mm
• Sheet Sizes: 1000×2000 mm / 1020×1220 mm / 1220×2440 mm
• Colors: Green / Yellow / Light Green / Natural
• Water Absorption: <1%
• Fire Retardancy: Available in FR4 (UL94-V0)

Advantages

• Excellent balance of electrical + mechanical properties
• Flame-retardant and high-temperature stable
• Long-term durability under harsh operating conditions
• Suitable for precision machined parts

NEMA FR4 Glass Epoxy Sheet is a premium-grade electrical and mechanical insulation laminate made from woven fiberglass cloth impregnated with a flame-retardant epoxy resin system. It is the most widely used grade in industrial, electrical, and electronic applications due to its balanced combination of mechanical strength, dielectric performance, flame resistance, moisture resistance, and dimensional stability.

FR4 complies with NEMA FR4 specifications and is UL 94 V-0 flame retardant, making it suitable for demanding applications requiring fire safety compliance. It maintains excellent performance across a broad temperature range and exhibits low water absorption, high insulation resistance, and superior machinability.

These sheets are commonly used in PCB manufacturing, electrical panels, switchgear, motors, transformers, aerospace assemblies, EV battery insulation, router fixtures, CNC parts, busbar supports, and structural insulation components.

Key Features

• UL 94 V-0 Flame Retardant Glass Epoxy Laminate
• Excellent dielectric strength & electrical insulation
• High mechanical strength and impact resistance
• Low moisture absorption and high chemical resistance
• Stable under high temperature & electrical loading
• Superior machinability for CNC components
• Complies with NEMA FR4 Standard
• Thermally stable for Class F (155°C) applications

Applications

• PCB insulation, router plates, electronic housings
• Electrical machinery insulation components
• Busbar supports, terminal plates & insulating blocks
• Switchgear panels, control panels, MCCs
• EV battery module insulation & high-voltage separators
• Aerospace & defence-grade electrical components
• Motor slot wedges & structural supports
• Machined fixtures, jigs, gear blanks & tooling

Technical Range

• Material: Woven Fiberglass Cloth + FR Epoxy Resin
• Standard: NEMA FR4
• Flame Rating: UL 94 V-0
• Temperature Class: Up to 155°C (Class F)
• Sheet Thickness: 0.5 mm – 100 mm
• Water Absorption: <0.15%
• Dielectric Strength: Very High
• Sheet Sizes: 1000×2000 mm / 1220×2440 mm / Custom
• Colors: Green / Yellow / Light Green

Advantages

• Flame-retardant & UL-certified safety performance
• Best balance of electrical + mechanical strength
• Perfect for machining high-precision components
• Highly durable under voltage, heat, vibration & chemicals

G10 Glass Epoxy Sheet is a high-strength, high-performance insulation laminate made from woven fiberglass cloth bonded with electrical-grade epoxy resin under heat and pressure. Unlike FR4, G10 is non–flame retardant, but it offers superior mechanical strength, dielectric stability, chemical resistance, and moisture resistance, making it ideal for demanding electrical and mechanical environments.

G10 is known for its excellent rigidity, dimensional stability, and durability under continuous mechanical load. It maintains its insulating and mechanical properties even in humid or chemically exposed environments. These sheets are widely used in motors, transformers, switchgear, aerospace, tooling fixtures, gears, CNC-machined parts, busbar supports, rotor wedges, insulation blocks, and electronic equipment.

Because of its smooth surface, low moisture absorption, and exceptional electrical performance, G10 is a preferred material for precision insulation and mechanical components.

Key Features

• High mechanical strength & structural rigidity
• Excellent dielectric strength and insulation performance
• Low moisture absorption — stable in humid environments
• Resistant to chemicals, oils, solvents & heat
• Smooth surface and uniform density
• Easily machinable for CNC parts & insulating components
• Thermal performance up to Class F (155°C)
• Superior strength compared to many composites

Applications

• Motor slot wedges, spacers & coil supports
• Busbar supports & transformer insulation blocks
• High-strength CNC machined parts
• Electrical switchgear & control panel components
• Aerospace and defence-grade insulation parts
• Fixtures, jigs, gears & industrial equipment
• PCB backing boards, structural insulators
• EV motor insulation & battery assembly components

Technical Range

• Material: Woven Glass Fiber + Epoxy Resin
• Standard: NEMA G10 (Non–Flame Retardant)
• Temperature Class: 155°C (Class F)
• Dielectric Strength: Very High
• Water Absorption: <0.15%
• Thickness Range: 0.5 mm – 100 mm
• Sheet Sizes: 1000×2000 mm / 1220×2440 mm / Custom
• Colors: Green / Light Green / Yellowish

Advantages

• Superior mechanical performance, stronger than FR4
• Ideal for precision machined electrical components
• Stable under mechanical stress, vibration & heat
• Long-lasting insulation for industrial & electrical systems

3240 Glass Epoxy Sheet is a high-strength, thermoset electrical insulation laminate manufactured from woven fiberglass cloth impregnated with epoxy phenolic resin, pressed under high heat and pressure. It conforms to the Chinese GB/T 1303 and IEC insulation material standards, making it a globally recognized grade for electrical and mechanical applications.

Compared to FR4/G10, 3240 offers excellent mechanical strength, dielectric properties, machinability, moisture resistance, and thermal performance. It is suitable for continuous operating temperatures around 155°C (Class F).

Widely used in motors, switchgear components, electrical panels, EV motors, transformer structural insulation, CNC machined insulation parts, jigs, fixtures, gears, spacers and busbar supports. It remains dimensionally stable under heat, vibration, and electrical stress.

3240 Glass Epoxy Sheet is often the preferred choice for cost-effective yet high-performance applications requiring reliability and durability.

Key Features

• High mechanical strength and excellent rigidity
• Strong dielectric performance and insulation reliability
• Good heat resistance — Class F (155°C)
• Excellent machinability (CNC-friendly)
• Moisture resistant and chemically stable
• Suitable for structural, electrical & mechanical parts
• Uniform density, smooth surface and stable dimensions
• Economical alternative to FR4 / G10 laminates

Applications

• Motor slot wedges, coil supports, terminal plates
• Transformer insulation parts & structural supports
• Electrical switchgear panels & MCC boards
• High-strength CNC machined components
• Busbar supports, arc chutes & insulating blocks
• Industrial machine components & fixtures
• Power equipment insulation assemblies

Technical Range

• Material: Woven Fiberglass Cloth + Epoxy Phenolic Resin
• Standard: 3240 (GB/T 1303 Epoxy Laminate)
• Thermal Class: Class F (155°C)
• Dielectric Strength: High
• Tensile Strength: High
• Thickness Range: 0.5 mm – 100 mm
• Sheet Sizes: 1000×2000 mm / Custom sizes
• Colors: Yellow / Light Yellow / Amber

Advantages

• High mechanical strength suitable for load-bearing applications
• Excellent balance of electrical + mechanical properties
• Resistant to thermal aging and moisture
• Cost-effective for industrial manufacturing & OEMs

EPGC Glass Epoxy Sheets are premium electrical insulation laminates manufactured from woven fiberglass cloth impregnated with high-quality epoxy resin, pressed under high temperature and pressure. These laminates belong to the EPGC (Epoxy Glass Cloth) series, which includes grades EPGC 201, 202, 203, 205, 306 and others, depending on thermal class, mechanical strength, and flame resistance.

EPGC sheets offer exceptional dielectric strength, mechanical rigidity, tensile strength, moisture resistance, chemical resistance, and thermal stability. These properties make EPGC laminates suitable for motors, generators, transformers, switchgear, CNC machined components, EV motors, busbar supports, slot wedges, electrical panels, and high-performance industrial assemblies.

They exhibit excellent machinability and dimensional stability, enabling fabrication of precision insulation parts such as spacers, barriers, blocks, terminal plates, and structural insulation components.

Key Features

• High dielectric strength & insulation performance
• Excellent mechanical strength & dimensional stability
• Thermal endurance up to Class F (155°C) or Class H (180°C)
• Good resistance to moisture, oils, fuels & chemicals
• Available in multiple EPGC grades (201/202/203/205/306)
• Smooth, uniform laminated surface
• CNC machining compatible
• Long-term reliability under electrical & thermal stress

Applications

• Motor slot wedges, spacers & coil support components
• Busbar supports, transformer block insulation
• Switchgear components & electrical control panels
• Sheet cut parts and CNC machined insulation components
• EV motor insulation & battery equipment
• Industrial machinery fixtures and tooling plates
• High-voltage equipment and insulating structures

Technical Range

• Material: Epoxy Resin + Woven Glass Cloth Laminate
• Grades: EPGC-201 / 202 / 203 / 205 / 306
• Thermal Class: Class F (155°C) / Class H (180°C)
• Dielectric Strength: Very High
• Tensile Strength: High (grade dependent)
• Sheet Thickness: 0.5 mm – 100 mm
• Sheet Sizes: 1000×2000 mm / 1220×2440 mm / Custom
• Colors: Green / Yellow / Light Green

Advantages

• Multiple grades to suit electrical & mechanical needs
• Excellent balance of strength, insulation & stability
• Suitable for both high-voltage and high-temperature environments
• Widely used by electrical and industrial OEMs

EP4 Glass Epoxy Sheet is a high-performance electrical insulation laminate made from woven fiberglass cloth bonded with specially formulated EP4-grade epoxy resin. It offers superior mechanical strength, excellent dielectric properties, and enhanced thermal stability, making it suitable for advanced electrical and mechanical applications.

Designed for high-voltage and high-temperature environments, EP4 provides excellent arc resistance, tracking resistance, and low moisture absorption. These sheets retain structural rigidity and mechanical strength even under continuous thermal load, making them ideal for motors, generators, transformers, switchgear, EV motors, high-voltage equipment, CNC machined insulation components, and industrial fixtures.

EP4 is widely used where long-term insulation reliability, durability, and machining precision are required.

Key Features

• High-strength glass epoxy laminate (EP4 Grade)
• Excellent dielectric strength for HV applications
• High thermal resistance for Class F/H systems
• Low water absorption and strong chemical resistance
• Smooth surface with excellent machinability
• Better mechanical strength than standard epoxy laminates
• Stable under vibration, thermal cycling, and electrical load
• Suitable for CNC machining of precision components

Applications

• High-voltage electrical insulation components
• Motor slot wedges, coil supports & spacers
• Transformer duct boards, blocks, and structural insulation
• Switchgear & panel board components
• CNC machined insulating parts
• Industrial jigs, fixtures, gears & support plates
• Control equipment & instrument assemblies
• EV battery and high-frequency motor insulation

Technical Range

• Material: EP4 Epoxy Resin + Woven Glass Cloth
• Grade: EP4 Laminated Epoxy Glass Sheet
• Thermal Class: Class F (155°C) / Class H (180°C)
• Dielectric Strength: Very High
• Tensile Strength: Extremely High
• Water Absorption: Very Low
• Thickness: 0.5 mm – 100 mm
• Sheet Size: 1000×2000 mm / 1220×2440 mm / Custom
• Color: Green / Light Yellow

Advantages

• Excellent combination of electrical + mechanical performance
• Ideal for precision engineered insulation components
• Outstanding durability in harsh operating environments
• Superior epoxy reinforcement ensures long service life

EPGC 202 Glass Epoxy Sheet is a high-performance electrical insulation laminate manufactured from woven fiberglass cloth impregnated with epoxy resin, pressed under controlled heat and pressure according to IEC and NEMA standards. EPGC 202 is known for its excellent dielectric strength, mechanical rigidity, and thermal endurance, making it highly suitable for electrical, mechanical, and industrial applications.

Compared to standard glass epoxy grades, EPGC 202 provides improved consistency, higher tensile strength, and better dimensional stability. It performs reliably in Class F (155°C) thermal environments and offers excellent resistance to moisture, chemicals, oils, and thermal cycling.

EPGC 202 Glass Epoxy Sheets are widely used in motors, transformers, switchgear, busbar supports, slot wedges, insulation barriers, CNC-machined parts, EV motors, and industrial fixtures. The material can be easily machined into custom components due to its stable structure and high resin-glass bonding.

Key Features

• Premium epoxy glass cloth laminate (EPGC 202 grade)
• High dielectric strength and insulation stability
• Excellent mechanical strength and rigidity
• Good chemical, oil, and moisture resistance
• Thermal resistance up to Class F (155°C)
• Smooth surface and uniform thickness
• CNC machinable for complex insulation components
• Used widely in electrical and industrial applications

Applications

• Motor slot wedges, supports & coil insulation parts
• Transformer structural components & barriers
• Electrical switchgear & panel boards
• CNC machined insulating components
• EV motor insulation and battery modules
• Industrial machinery fixtures and load-bearing components
• High-voltage insulation systems

Technical Range

• Material: Woven Glass Cloth + Epoxy Resin
• Grade: EPGC 202 (IEC 60893 Standard)
• Thermal Class: F (155°C)
• Dielectric Strength: Very High
• Tensile Strength: High
• Thickness Range: 0.5 mm – 100 mm
• Sheet Size: 1000×2000 mm / 1220×2440 mm
• Color: Green / Light Yellow

Advantages

• Better mechanical strength compared to lower EPGC grades
• Stable under electrical & thermal stress
• Highly machinable for precision parts
• Used across OEM and industrial applications

EPGC 201 Glass Epoxy Sheet is a high-quality electrical insulation laminate made from woven fiberglass cloth impregnated with epoxy resin and hot-pressed to deliver strong mechanical strength, dielectric performance, and thermal stability. As per IEC 60893 standards, EPGC 201 is designed for electrical and mechanical applications requiring consistent performance and excellent machinability.

Compared to lower grades, EPGC 201 offers improved electrical insulation, strong bond strength, low moisture absorption, and excellent mechanical stability under thermal stress. It is widely used in motors, alternators, transformers, switchgear, busbar supports, slot wedges, spacers, CNC machined insulation components, EV motors, and industrial fixtures.

EPGC 201 remains dimensionally stable under vibration, heat, and environmental changes, making it a preferred choice for OEMs and electrical equipment manufacturers.

Key Features

• High dielectric strength & insulation performance
• Excellent mechanical and flexural strength
• Good thermal resistance up to Class F (155°C)
• Moisture, oil & chemical resistant
• Smooth laminated surface with uniform density
• CNC machinable for customized insulation parts
• Stable under electrical load & thermal cycling
• Complies with IEC 60893 EPGC standards

Applications

• Motor slot wedges, coil supports & insulation parts
• Transformer insulating components & barriers
• Busbar supports & switchgear insulation
• CNC machined electrical components
• EV motor insulation & battery systems
• Industrial machine jigs, fixtures & tooling plates
• High-voltage insulating hardware

Technical Range

• Material: Epoxy Resin + Woven Glass Cloth
• Grade: EPGC 201 (IEC 60893)
• Thermal Class: F (155°C)
• Tensile Strength: High
• Dielectric Strength: High
• Thickness: 0.5 mm – 100 mm
• Sheet Sizes: 1000×2000 mm / 1220×2440 mm
• Color: Green / Light Yellow

Advantages

• Stable mechanical & electrical performance under heat
• Excellent machinability for precision insulation components
• Long life in harsh electrical environments
• Widely used in electrical & industrial OEM applications

EPGC 203 Glass Epoxy Sheet is a high-grade electrical insulation laminate made from woven fiberglass cloth saturated with high-performance epoxy resin, pressed under heat and pressure according to IEC 60893 standards. This material offers excellent dielectric strength, exceptional mechanical stability, and superior thermal endurance, making it ideal for demanding electrical and industrial applications.

EPGC 203 is engineered for Class F (155°C) environments and is known for its low moisture absorption, high tensile strength, and outstanding dimensional stability under thermal cycling. Due to its robust properties and fine laminate finish, it is widely used in motors, alternators, transformers, switchgear panels, busbar supports, CNC machined insulation components, EV motors, and high-voltage assemblies.

Its uniform surface and strong glass-epoxy bonding provide excellent machinability, allowing for precise custom components such as spacers, wedges, barriers, structural insulators, and mechanical fixtures.

Key Features

• IEC Grade EPGC 203 electrical insulation laminate
• High mechanical strength & superior flexural rigidity
• Excellent dielectric strength for HV applications
• Heat resistance up to Class F (155°C)
• Low moisture absorption & strong chemical resistance
• Smooth laminated surface, ideal for machining
• Stable performance under vibration & thermal stress
• Suitable for high-voltage & industrial environments

Applications

• Motor and generator slot wedges & coil supports
• Transformer insulation blocks and structural barriers
• Switchgear insulation boards & busbar supports
• CNC machined insulation components
• EV and hybrid motor insulation parts
• Industrial jigs, fixtures & tooling plates
• High-temperature electrical control units

Technical Range

• Material: Woven Glass Cloth + Epoxy Resin
• Grade: EPGC 203 (IEC 60893)
• Thermal Class: F (155°C)
• Dielectric Strength: Very High
• Tensile Strength: High
• Thickness Range: 0.5 mm – 100 mm
• Sheet Size: 1000×2000 mm / 1220×2440 mm
• Color: Green / Light Yellow

Advantages

• Stronger & more stable than EPGC 201 for electrical uses
• Excellent mechanical-electrical balance
• CNC machinable for precision insulation parts
• Long-term reliability in industrial & power sectors

EPGC 205 Glass Epoxy Sheet is a premium-grade electrical insulation laminate, produced using woven fiberglass cloth impregnated with specially formulated epoxy resin, hot-pressed according to IEC 60893 EPGC 205 standards. This grade is known for its superior mechanical strength, high dielectric performance, enhanced thermal endurance and excellent dimensional stability.

Compared to EPGC 201 and 203 grades, EPGC 205 offers greater heat resistance and improved mechanical strength, making it ideal for high-stress environments in electrical and industrial sectors. With thermal endurance up to Class H (180°C), it performs reliably under continuous thermal and electrical load.

EPGC 205 Sheets are extensively used in motors, alternators, transformers, EV motors, renewable energy equipment, switchgear, busbar supports, structural insulation panels, CNC machined parts, and high-voltage electrical assemblies.

Its strong epoxy-glass bonding provides excellent machinability, allowing fabrication into customer-specific insulation components with tight tolerances.

Key Features

• High-performance EPGC 205 epoxy glass laminate
• Superior mechanical strength & impact resistance
• High dielectric strength for high-voltage insulation
• Thermal endurance up to Class H (180°C)
• Excellent moisture resistance & chemical stability
• Smooth laminated finish with uniform density
• CNC machinable for precision electrical components
• Long-lasting insulation under vibration & thermal cycling

Applications

• Motor slot wedges, coil supports & structural insulation
• Transformer duct boards, spacers & block insulation
• High-voltage switchgear & electrical panels
• Busbar supports & insulation barriers
• CNC machined parts for industrial equipment
• EV motor insulation & battery modules
• Renewable energy generators & alternators
• Heavy-duty electrical and mechanical insulation systems

Technical Range

• Material: Woven Glass Fiber Cloth + Epoxy Resin
• Grade: EPGC 205 (IEC 60893 Standard)
• Thermal Class: Class H (180°C)
• Dielectric Strength: Very High
• Tensile Strength: Extremely High
• Water Absorption: <0.1%
• Thickness Range: 0.5 mm – 100 mm
• Sheet Sizes: 1000×2000 mm / 1220×2440 mm / Custom
• Color: Green / Light Yellow

Advantages

• Better thermal performance than EPGC 201/203 grades
• Ideal for high-temperature electrical equipment
• Reliable mechanical-electrical insulation performance
• Perfect for precision machining & OEM applications

EPGC 306 Glass Epoxy Sheet is a high-performance electrical insulation laminate manufactured from woven fiberglass cloth impregnated with a specially formulated high-temperature epoxy resin system, hot-pressed to meet IEC 60893 EPGC 306 standards.

It is one of the highest-grade epoxy glass laminates, offering outstanding dielectric strength, extremely high mechanical performance, excellent thermal endurance, flame resistance, and outstanding dimensional stability. EPGC 306 is designed for Class H (180°C) applications and performs reliably even under severe electrical, mechanical, and thermal stress.

EPGC 306 is used where maximum strength and durability are required, such as in HV motors, traction motors, alternators, aerospace components, EV propulsion systems, transformer supports, busbar structures, high-voltage switchgear, and CNC precision insulating parts.

Its very low moisture absorption, high flexural strength, and stable mechanical properties at elevated temperatures make it a preferred choice for heavy-duty industrial insulation and advanced engineering applications.

Key Features

• Highest performance epoxy glass laminate in the EPGC family
• Exceptional dielectric strength for HV equipment
• Ultra-high mechanical strength & rigidity
• Excellent thermal resistance up to Class H (180°C)
• Low moisture absorption & chemical resistance
• Flame-resistant behavior depending on resin formulation
• CNC machinable for precise insulation components
• Ideal for harsh industrial and high-voltage environments

Applications

• HV motors, alternators & traction motors
• High-voltage switchgear & electrical panels
• Structural insulation parts in heavy-duty machinery
• Busbar supports, transformer blocks & insulation barriers
• EV propulsion systems & battery modules
• Aerospace electrical insulation components
• CNC-machined electrical and mechanical insulation parts

Technical Range

• Material: Woven Glass Cloth + High-Temperature Epoxy Resin
• Grade: EPGC 306 (IEC 60893)
• Thermal Class: Class H (180°C)
• Dielectric Strength: Extremely High
• Tensile Strength: Very High
• Flexural Strength: Very High
• Thickness Range: 0.5 mm – 100 mm
• Sheet Size: 1000×2000 mm / 1220×2440 mm
• Color: Green / Light Yellow

Advantages

• Highest thermal and mechanical stability in the EPGC series
• Perfect for ultra-demanding industrial & electrical applications
• Long service life even under extreme temperature & vibration
• Ideal for OEMs requiring superior technical-grade insulation

Fiberglass Epoxy Slot Wedges are high-strength insulating wedges manufactured from epoxy resin–bonded fiberglass laminates, widely used in electric motors and generators for secure stator slot insulation, coil retention, vibration resistance, and dielectric protection.

Designed to maintain dimensional accuracy under continuous electrical and mechanical stress, these wedges provide excellent rigidity, dielectric strength, thermal resistance, and moisture resistance. They prevent coil movement during starting torque, vibration, and high-speed operation, thereby increasing motor life and efficiency.

Made from materials such as G10, G11, FR4, EPGC glass epoxy laminates, these wedges ensure compatibility with various insulation systems, including Class F (155°C) and Class H (180°C).

Their smooth surface, mechanical stability, and excellent machinability allow precise customization according to motor slot dimensions. These slot wedges are essential components in industrial motors, BLDC motors, submersible pumps, alternators, servo motors, and high-voltage rotating machines.

Key Features

• Manufactured from high-strength glass epoxy laminates
• Excellent dielectric strength and insulation performance
• High mechanical rigidity and dimensional stability
• Heat resistant up to Class H (180°C)
• Moisture, chemical, and oil resistant
• Superior vibration and impact resistance
• Precision-machined for perfect stator slot fit
• Compatible with VPI and epoxy-varnish insulation systems

Applications

• Electric motors (AC/DC)
• BLDC motors, servo motors, traction motors
• Submersible pump motors
• Alternators and generators
• High-voltage rotating machines
• Industrial drives and compressor motors
• EV motors and high-speed motors

Technical Range

• Material Options: G10, G11, FR4, EPGC, Fiberglass Epoxy Laminates
• Thermal Class: Class F (155°C) / Class H (180°C)
• Dielectric Strength: Very High
• Water Absorption: < 0.2%
• Typical Thickness: 0.5 mm – 3 mm
• Length: As per stator requirement
• Profile Types: Round-top, Flat-top, Dovetail, Special Profiles
• Colors: Green / Yellow / Natural

Advantages

• Enhances winding stability & motor life
• Withstands mechanical and thermal stress
• Provides long-term insulation reliability
• Suitable for OEM and rewinding applications

Phenolic Cotton Sheet (also known as Cotton Cloth Phenolic Laminate or Fabric-Based Phenolic Sheet) is a high-strength industrial insulation material manufactured from woven cotton fabric layers impregnated with phenolic resin, hot-pressed under high temperature and pressure.

Compared to paper-based phenolic laminates, Phenolic Cotton Sheets offer superior mechanical strength, impact resistance, toughness, and wear resistance, making them suitable for both electrical insulation and mechanical engineering applications.

They retain mechanical performance under load, vibration, friction and moderate heat, making them ideal for gears, pulleys, spacers, bearings, jigs, fixtures, insulating blocks, and structural industrial parts. Electrically, they provide good dielectric resistance and are widely used in switchgear, motors, generators and transformer components.

These sheets can be easily machined using CNC, drilling, milling, shaping, or turning operations.

Key Features

• Fabric-reinforced phenolic laminate (cotton-based)
• Very high mechanical strength and toughness
• Excellent impact resistance and shock absorption
• Good dielectric strength for LV electrical insulation
• Heat resistance up to 130–150°C (Class B)
• Low moisture absorption and high dimensional stability
• Superior machinability for gears & mechanical parts
• Resistant to oils, fuels, cutting fluids & mild chemicals

Applications

• Industrial gears, pulleys, bushings & bearings
• Transformer, motor & switchgear insulation parts
• CNC machined components for mechanical assemblies
• Jigs, fixtures, guiding tracks & support blocks
• Oil-resistant industrial machinery components
• Electrical insulating supports, terminal plates
• Gear blanks, cam plates, wear pads & mechanical guides

Technical Range

• Material: Cotton Fabric Layers + Phenolic Resin
• Grade: Fabric-Based Phenolic Laminate
• Thermal Class: Class B (130°C) / up to 150°C
• Tensile Strength: Very High
• Impact Strength: High
• Dielectric Strength: Moderate (LV insulation)
• Thickness Range: 3 mm – 100 mm
• Sheet Sizes: 1000×2000 mm / 1220×2440 mm
• Color: Brown / Black / Reddish-Brown

Advantages

• Strongest phenolic laminate option (fabric reinforced)
• Excellent for mechanical & electrical hybrid applications
• Machinable like metal but lighter & corrosion-free
• Long-lasting performance in industrial environments

GPO3 Fiberglass Polyester Sheet is a high-strength, flame-retardant, fiberglass-reinforced polyester laminate manufactured using continuous filament mat (CFM) and unsaturated polyester resin. It is engineered for electrical insulation, structural applications, and fire-resistant assemblies in various industrial and electrical environments.

GPO3 sheets provide excellent electrical insulation, mechanical strength, arc resistance, and flame resistance. They are UL 94 V-0 fire rated and meet stringent electrical insulation standards. With stable performance under heat, humidity and electrical stress, GPO3 is widely used in switchgear, busbar supports, electrical panels, motor components, insulator brackets, transformer parts, and enclosure fabrication.

Their arc and track resistance makes them suitable for high-voltage insulation. GPO3 is also used for machining customized insulating components such as spacers, barriers, channels, angles and supporting elements.

Key Features

• High mechanical strength and rigidity
• Excellent dielectric strength & insulation properties
• UL 94 V-0 flame retardant
• Arc & track resistant – ideal for HV applications
• Good dimensional stability under thermal cycling
• Lightweight, strong and corrosion resistant
• Resistant to chemicals, oils, and moisture
• Suitable for CNC machining for precision parts

Applications

• LV/MV switchgear & electrical control panels
• Busbar support structures & mounting plates
• Transformer insulation & structural barriers
• Industrial machinery insulation components
• Arc chutes, guide rails, spacers & insulating strips
• Battery compartment walls for EV applications
• Structural fabrication for electrical enclosures

Technical Range

• Material: Fiberglass Reinforced Polyester (CFM + Polyester Resin)
• Standard: GPO3 / UPR Glass Polyester Laminate
• Flame Rating: UL 94 V-0
• Tensile Strength: High
• Thermal Class: Class F (155°C)
• Arc Resistance: High
• Thickness Range: 1 mm – 50 mm
• Sheet Size: 1220×2440 mm / 1000×2000 mm / Custom
• Color Options: Red / White / Off-White

Advantages

• Excellent arc resistance for busbar & HV systems
• Strong yet lightweight structural insulation material
• High fire resistance and electrical reliability
• Perfect for switchgear, panels, and electrical OEMs

Muscovite Mica Sheet is a high-temperature, high-dielectric electrical insulation sheet manufactured from natural muscovite mica flakes bonded with heat-resistant silicone or shellac binders. Muscovite is known for its excellent dielectric strength, outstanding thermal resistance, high mechanical stability, and superior chemical inertness.

These sheets can withstand continuous temperatures up to 500°C, making them suitable for high-temperature insulation applications where organic materials fail. Muscovite Mica Sheets maintain stability under thermal shock, vibration, and electrical stress, making them ideal for motors, heaters, foundry equipment, furnace insulation, high-voltage applications, and thermal barriers.

The sheets are available in Rigid (Hard Mica) and Flexible (Soft Mica) variants. Hard mica sheets are used for machined insulation components, while flexible mica sheets are used for wrapping, lining and thermal barriers.

Key Features

• Excellent dielectric strength & electrical insulation
• Outstanding thermal resistance up to 500°C
• High mechanical strength & rigidity
• Flame-resistant and non-flammable
• Chemical, moisture, acid & alkali resistant
• Available in rigid and flexible grades
• Minimal thermal expansion and high dimensional stability
• Suitable for high-voltage & high-temperature environments

Applications

• Thermal insulation in heaters, furnaces & foundries
• Motor armatures, commutators & coil insulation
• High-voltage transformers & switchgear
• Insulation barriers in EV batteries and heating assemblies
• Mica washers, spacers, gaskets & machined components
• Household heating appliances (irons, toasters, ovens)
• Arc chutes, capacitor insulation, brake resistors
• Welding machines and induction equipment

Technical Range

• Material: Muscovite Mica + Heat-Resistant Binder
• Grades: Rigid (Hard Mica) / Flexible (Soft Mica)
• Thermal Resistance: Up to 500°C
• Dielectric Strength: Extremely High
• Thickness: 0.10 mm – 50 mm
• Sheet Size: 1000×600 mm / 1000×1200 mm / Custom
• Color: Natural Silver-Grey

Advantages

• Performs under extreme temperature & voltage conditions
• Excellent long-term electrical & thermal stability
• Resistant to thermal shock and environmental degradation
• Suitable for both mechanical and electrical machining

Glass Mica Sheet is a high-performance electrical and thermal insulation material manufactured using high-quality phlogopite or muscovite mica paper reinforced with woven fiberglass cloth. These layers are bonded with a high-temperature silicone resin, resulting in a composite sheet with exceptional heat resistance, dielectric strength, and mechanical stability.

Compared to natural mica sheets, Glass Mica Sheets offer significantly improved flexural strength, impact resistance, and thermal endurance, making them ideal for extreme working environments. These sheets can withstand continuous temperatures of 500°C and short-term exposure up to 800°C, depending on the mica grade.

Glass Mica Sheets are used in furnaces, induction coils, motors, generators, heating appliances, arc chutes, battery insulation, aerospace equipment, and high-voltage electrical assemblies. Their superior strength and reliability make them suitable for CNC machining into washers, barriers, gaskets, terminal plates and structural insulation parts.

Key Features

• Reinforced mica sheet with woven fiberglass cloth
• Very high thermal resistance (up to 500°C continuous)
• Excellent dielectric strength and electrical insulation
• Outstanding flexural and mechanical strength
• Low thermal conductivity & flame resistance
• Strong dimensional stability under heat and vibration
• Compatible with high-temperature heaters & industrial furnaces
• Machinable for precision insulating components

Applications

• Furnace insulation and thermal barriers
• Electric heaters, toasters, irons & industrial heating systems
• Motor and generator commutator insulation
• Arc chutes, high-voltage switches & contactors
• CNC machined parts: washers, gaskets, insulation plates
• EV battery insulation & high-temperature electronics
• Welding equipment, induction heaters & brake resistors

Technical Range

• Material: Phlogopite/Muscovite Mica Paper + Fiberglass Cloth
• Binder: High-Temperature Silicone Resin
• Thermal Resistance: Up to 500°C continuous
• Dielectric Strength: 15–25 kV/mm
• Thickness Range: 0.10 mm – 50 mm
• Flexural Strength: Very High (fiberglass reinforced)
• Sheet Size: 1000×600 mm / 1000×1200 mm / Custom sizes
• Color: Golden Brown / Silver Grey

Advantages

• Stronger and more heat-resistant than standard mica sheets
• Maintains strength in high vibration/thermal shock environments
• Long service life even in extreme temperature applications
• Suitable for both electrical and thermal insulation purposes

Silicone Bonded Mica Sheet is a premium high-temperature electrical insulation material made from phlogopite or muscovite mica paper bonded with high-performance silicone resin. This advanced composite offers excellent thermal endurance, dielectric strength, mechanical stability and flame resistance, making it suitable for extreme environments where organic insulation materials fail.

Due to silicone bonding, these sheets maintain flexibility or rigidity (depending on grade) even at elevated temperatures, ensuring long-term dimensional stability. They can withstand continuous operating temperatures of 500°C and short-term peaks up to 900°C, making them ideal for thermal insulation applications in both electrical and industrial systems.

Silicone Bonded Mica Sheets are widely used in heaters, furnaces, foundry equipment, motors, generators, arc chutes, high-voltage insulation systems, battery packs and industrial heating appliances.

Key Features

• High-temperature insulation (up to 500°C continuous)
• Strong dielectric strength and arc resistance
• Silicone bonding ensures flexible or rigid grades
• Excellent chemical, moisture and fire resistance
• High tensile, flexural and compressive strength
• Withstands vibration and thermal shock
• Low thermal conductivity for heat shielding
• Can be CNC machined into precise components

Applications

• Furnace & heater insulation liners
• Electric iron, toaster, oven & hot plate insulation
• Arc chute and high-voltage switchgear insulation
• Motor and generator commutator insulation
• EV battery thermal shielding & electronics insulation
• Industrial heaters & high-temperature equipment
• Welding machines & induction coils
• Machined gaskets, washers, plates & spacers

Technical Range

• Material: Mica Paper (Phlogopite/Muscovite) + Silicone Resin
• Thermal Class: Up to 500°C continuous, 900°C peak
• Dielectric Strength: 15–25 kV/mm
• Thickness Range: 0.15 mm – 50 mm
• Flexibility Options: Rigid / Semi-Rigid / Flexible
• Sheet Sizes: 1000×600 mm / 1000×1200 mm / Custom
• Color: Golden Brown / Silver Grey

Advantages

• Extremely high temperature and voltage resistance
• Strong mechanical and thermal stability
• Safe for high-voltage and high-temperature installations
• Long service life even in harsh environments

Natural Mica Sheet is a high-quality electrical and thermal insulation material manufactured from natural mica flakes, primarily Muscovite or Phlogopite, bonded with heat-resistant adhesives. Known for its exceptional dielectric strength, high thermal endurance, low thermal conductivity, and excellent chemical resistance, natural mica is widely used in electrical, thermal and industrial applications.

Natural mica sheets offer outstanding stability under high voltage, extreme temperatures, and mechanical stress. Their natural laminar structure provides strong insulating properties and excellent resistance to thermal shock. Depending on the grade, Natural Mica Sheets can withstand continuous temperatures up to 500°C.

These sheets are commonly used in motors, generators, heating appliances, thermal equipment, electrical insulation systems, battery insulation, arc chutes, and industrial furnace applications. They can also be machined into washers, gaskets, plates, spacers, and other precision insulating components.

Key Features

• Excellent electrical insulation (high dielectric strength)
• High thermal resistance up to 500°C (continuous)
• Naturally flame-resistant and non-combustible
• Strong mechanical strength and stability
• Resistant to chemicals, moisture and solvents
• Low thermal conductivity – ideal for heat shielding
• Available in Muscovite & Phlogopite grades
• Suitable for machining and fabrication

Applications

• Motor & generator insulation
• Furnace, heater & thermal equipment liners
• Commutator insulation and slot wedges
• Arc chutes, contactors & high-voltage equipment
• Insulation washers, gaskets, spacers & machined parts
• EV battery thermal insulation
• Industrial heating appliances (ovens, irons, toasters)
• Capacitors, resistor banks & electrical hardware

Technical Range

• Material: Natural Mica (Muscovite / Phlogopite)
• Binder Type: Shellac / Silicone / Natural Resin (based on grade)
• Thermal Class: Up to 500°C continuous
• Thickness: 0.10 mm – 50 mm
• Dielectric Strength: 15–30 kV/mm
• Sheet Sizes: 1000×600 mm / 1000×1200 mm / Custom
• Color: Silver-Grey (Muscovite) / Golden-Brown (Phlogopite)

Advantages

• Pure natural mica ensures maximum insulation quality
• Long-term reliability under heat & electrical stress
• Excellent chemical and flame resistance
• Low cost compared to synthetic insulating materials
• Suitable for both electrical & thermal applications

Silicone Bonded Phlogopite Mica Sheet is a premium high-temperature insulation material, manufactured using phlogopite mica paper reinforced with heat-resistant silicone resin. Known for its exceptional ability to withstand extreme temperatures up to 1000°C (short-term) and continuous operation up to 700°C, it is widely used in industrial thermal and electrical insulation systems.

Phlogopite mica inherently offers better thermal resistance, flexibility, and flame resistance compared to muscovite. When bonded with silicone, the sheet becomes highly stable under thermal shock, mechanical vibration, and high dielectric stress. It remains dimensionally stable without cracking or delaminating.

Silicone Bonded Phlogopite Mica Sheets are extensively used in foundries, furnaces, die-casting, metallurgy, welding machines, heating systems, arc chutes, high-voltage insulation, EV battery protection, aerospace insulation and other extreme-environment applications.

Key Features

• Withstands temperatures up to 700°C (continuous)
• Short-term peak temperature resistance up to 1000°C
• Outstanding dielectric strength and insulation stability
• High flame resistance and non-combustible
• Excellent flexibility and mechanical strength
• Resistant to thermal shock, chemicals, oils & acids
• Low smoke emission and non-toxic at high temperatures
• Suitable for machining into washers, plates & custom shapes

Applications

• Furnace & foundry insulation
• EV battery heat shielding and thermal barriers
• High-temperature electrical equipment
• Arc chutes, commutators & contactors
• Welding machines & induction heating units
• Gaskets, spacers, washers, plates & machined insulation parts
• Aerospace thermal insulation layers
• Die-casting machines & metallurgical equipment

Technical Range

• Material: Phlogopite Mica Paper + Silicone Resin Binder
• Thermal Resistance: 700°C continuous / 1000°C peak
• Dielectric Strength: 15–20 kV/mm
• Thickness Range: 0.20 mm – 50 mm
• Flexural Strength: Very High
• Sheet Sizes: 1000×600 mm / 1000×1200 mm / Custom
• Color: Golden Brown

Advantages

• Superior high-temperature capability compared to muscovite sheets
• Stable under harsh industrial operating conditions
• Excellent electrical + thermal + mechanical performance
• Ideal for extreme-temperature applications and protective insulation

Magnetic Slot Wedges are precision-engineered components used in electric motors and generators to secure stator windings inside slots, improve magnetic efficiency, reduce vibration, and enhance overall machine performance. These wedges are manufactured using magnetic composite materials, typically epoxy-bonded iron powder or equivalent magnetic laminates, ensuring controlled magnetic permeability.

Unlike traditional non-magnetic wedges, Magnetic Slot Wedges allow partial magnetic flux penetration, improving motor torque, efficiency and power factor, particularly in high-speed and industrial motors. They also provide excellent mechanical strength, dielectric insulation, dimensional stability and vibration resistance.

Magnetic Slot Wedges are used in motors where enhanced performance characteristics are required, such as BLDC motors, servo motors, traction motors, industrial induction motors, alternators, and high-efficiency machines. These wedges maintain their shape under continuous thermal cycling, electrical stress, and mechanical vibration.

Key Features

• Magnetic composite wedge for improved motor efficiency
• Controlled magnetic permeability for optimized flux distribution
• High mechanical strength and dimensional accuracy
• Excellent dielectric insulation on the outer surface
• Heat resistance up to Class F / Class H temperatures
• Superior vibration resistance and slot retention capability
• Compatible with varnish, epoxy and VPI insulation systems
• Lightweight, corrosion-free, and long-lasting

Applications

• High-efficiency induction motors
• BLDC motors, servo motors & traction motors
• Alternators and generators
• Industrial motors requiring improved torque output
• Variable-frequency drive (VFD) operated motors
• Renewable energy motors (wind, hydro, etc.)
• High-speed rotating machinery

Technical Range

• Material: Magnetic Composite (Iron Powder + Epoxy Resin)
• Thermal Class: Class F (155°C) / Class H (180°C)
• Dielectric Strength: High Insulation Coat on Outer Surface
• Permeability: Controlled magnetic grade (μr 2–5 typical)
• Standard Profiles: Round top, flat top, dovetail, custom
• Size Range: As per stator slot dimension drawings
• Color: Grey / Black / Brown (depending on formulation)

Advantages

• Enhances motor torque & efficiency through optimized flux
• Provides secure winding retention and long service life
• Suitable for high-speed and high-performance motors
• Available in custom dimensions for OEM applications

Fiberglass Epoxy Slot Wedges are high-strength insulating wedges manufactured from epoxy resin–bonded fiberglass laminates, widely used in electric motors and generators for secure stator slot insulation, coil retention, vibration resistance, and dielectric protection.

Designed to maintain dimensional accuracy under continuous electrical and mechanical stress, these wedges provide excellent rigidity, dielectric strength, thermal resistance, and moisture resistance. They prevent coil movement during starting torque, vibration, and high-speed operation, thereby increasing motor life and efficiency.

Made from materials such as G10, G11, FR4, EPGC glass epoxy laminates, these wedges ensure compatibility with various insulation systems, including Class F (155°C) and Class H (180°C).

Their smooth surface, mechanical stability, and excellent machinability allow precise customization according to motor slot dimensions. These slot wedges are essential components in industrial motors, BLDC motors, submersible pumps, alternators, servo motors, and high-voltage rotating machines.

Key Features

• Manufactured from high-strength glass epoxy laminates
• Excellent dielectric strength and insulation performance
• High mechanical rigidity and dimensional stability
• Heat resistant up to Class H (180°C)
• Moisture, chemical, and oil resistant
• Superior vibration and impact resistance
• Precision-machined for perfect stator slot fit
• Compatible with VPI and epoxy-varnish insulation systems

Applications

• Electric motors (AC/DC)
• BLDC motors, servo motors, traction motors
• Submersible pump motors
• Alternators and generators
• High-voltage rotating machines
• Industrial drives and compressor motors
• EV motors and high-speed motors

Technical Range

• Material Options: G10, G11, FR4, EPGC, Fiberglass Epoxy Laminates
• Thermal Class: Class F (155°C) / Class H (180°C)
• Dielectric Strength: Very High
• Water Absorption: < 0.2%
• Typical Thickness: 0.5 mm – 3 mm
• Length: As per stator requirement
• Profile Types: Round-top, Flat-top, Dovetail, Special Profiles
• Colors: Green / Yellow / Natural

Advantages

• Enhances winding stability & motor life
• Withstands mechanical and thermal stress
• Provides long-term insulation reliability
• Suitable for OEM and rewinding applications