Harnawa Insulations Private Limited

Introducing our Polyester Woven Tapes – a superior choice for insulating and binding applications in the realm of electrical machinery and transformers. Woven with precision from high-quality polyester filaments, these tapes boast remarkable heat resistance and shrinkage properties, making them an ideal choice for insulation and binding needs in manufacturing and repair scenarios. The simplicity in construction and the ability to tightly bind coils set these tapes apart, offering advantages such as high shrinkage rates without the need for re-dipping in paint. Notably, they exhibit high thermal tensile strength, ensuring durability with no relaxation or shedding. Beyond their technical prowess, these tapes are environmentally friendly, causing no pollution to transformer oil. Their versatile applications span binding transformers, motors, and other mechanical and electrical products throughout the manufacturing process, serving key roles in coil applications, transposition, and lead fencing within the body.

Our Fire Protection Fiberglass Sleeves are meticulously designed to meet the demanding requirements of thermal environments, providing exceptional performance and reliability. Crafted from non-alkali fiberglass yarn and coated with silicone resin, these sleeves offer a myriad of benefits :
‍Dielectric Properties: Demonstrating excellent dielectric qualities, our sleeves ensure reliable electrical insulation.
‍Protection Material: Specifically designed for use in areas requiring thermal protection, such as in metallurgy and shipbuilding, these sleeves effectively cover electrical wires or fluid pipelines.
‍Resistant to Molten Splash and Flame Thermal Radiation: Providing reliable protection against molten splash and flame thermal radiation, ensuring safety in challenging environments.
‍Moisture Proof: The sleeves are moisture-proof, waterproof, and effective in preventing pollution.
‍Velcro Type for Easy Installation: Available in a Velcro type, eliminating the need to remove hoses and cables during installation. This feature not only saves time but also reduces labor and installation costs.

Our esteemed Polyester Resin Fiberglass Tapes renowned for their exceptional quality. Crafted with precision, these tapes feature parallel twisted E-glass yarns pre-impregnated with a specialized thermosetting polyester resin. Widely acknowledged for their high quality, these tapes find extensive applications in AC and DC motors, generators, and transformers, with a particular emphasis on traction motors. Elevate your electrical insulation solutions with the reliability and excellence embodied in our Polyester Resin Fiberglass Tapes.

We specialize in supplying high-quality Fiberglass Epoxy Profiles tailored for electrical insulation in diverse applications within the electrical industry. Our extensive range includes FRP Tubes, Rods, Threaded Rods, Dog Bones, Corner Angles, Flats, and structural tubes, all meticulously crafted for superior performance.

Specifically designed for use in transformers, our FRP Epoxy Pultruded Profiles, such as Dogbones, Hats, Corners, Flats, Tubes, and Threaded Rods, play integral roles in applications like transformer spacer sticks, standoff insulators, structural supports, and tension members.
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The profiles, available in both "F" and "H" Class Insulation, are epoxy resin-based, ensuring optimal electrical insulation properties. Notable applications include transformer components, where FRP Tubes, Threaded Rods, Studs, and Nuts contribute to enhanced electrical insulation.

Our FRP Corner Angles, Threaded Rods, Studs, and Nuts are thoughtfully designed to provide superior electrical insulation, making them essential components for various electrical applications. Choose our FRP Epoxy Pultruded Profiles for reliability, durability, and high-performance electrical insulation in demanding environments.

Fiberglass Mesh is a woven, alkali-resistant reinforcement fabric made from high-strength fiberglass yarn, widely used in construction, waterproofing, wall reinforcement, stone & tile fixing, insulation boards, FRP reinforcement, and industrial filtration applications. The mesh is coated with special chemicals (usually acrylic or alkali-resistant coating) to provide long-term durability against moisture, cement, alkali, and mechanical abrasion.

Fiberglass Mesh offers high tensile strength, dimensional stability, crack resistance, and excellent bonding with cement, adhesives, and resins. It prevents surface cracks, increases structural strength, and enhances the durability of buildings and composite materials.

It is lightweight, easy to cut, flexible, and ideal for internal & external reinforcement.

Key Features

• Alkali-resistant coating for long-term durability
• High tensile strength & excellent dimensional stability
• Prevents cracking in walls, concrete, plaster & tiles
• Strong bonding with adhesives, cement & waterproofing materials
• Moisture-resistant, corrosion-proof & anti-aging
• Flame-resistant and non-conductive
• Lightweight, flexible & easy to install

Applications

• Wall plaster reinforcement & crack prevention
• Waterproofing coating reinforcement (terraces, bathrooms)
• Tile backing & stone reinforcement
• EIFS/ETICS insulation boards
• Marble & granite slab reinforcement
• FRP composite reinforcement layers
• Industrial filtration fabrics
• Drywall joint reinforcement

Technical Range

• Material: Fiberglass Yarn
• Coating: Alkali-Resistant (A.R.) Polymer Coating
• Mesh Size: 2×2 mm / 4×4 mm / 5×5 mm / 10×10 mm
• GSM Range: 45 – 200 GSM
• Roll Width: 1 m (standard) / Custom widths
• Roll Length: 50 m / 100 m / Custom lengths
• Temperature Resistance: Up to 550°C
• Color: White / Blue / Yellow / Green

Advantages

• Extends life of buildings & insulation systems
• Does not rust, corrode or degrade in alkaline cement
• Enhances structural bonding & prevents cracks
• Lightweight & economical reinforcement solution

Bunched Bare and Tinned Copper Conductors are precision-engineered using high-purity, electrolytic-grade copper strands that are twisted or bunched together to form a highly flexible and conductive core. The bare variant offers excellent conductivity and is suitable for standard electrical grounding and wiring applications, while the tinned copper version is coated with a thin layer of tin to improve corrosion resistance, enhance solderability, and extend shelf life—especially in humid or chemically aggressive environments. Their flexibility, high thermal conductivity, and uniform current distribution make them ideal for tight bending radii and vibration-prone installations.

These conductors are widely used in low-voltage power distribution, grounding and bonding systems, control panel wiring, automotive harnessing, and cable manufacturing. Their ability to maintain electrical integrity under dynamic mechanical stress makes them suitable for mobile equipment, industrial machinery, and electronic assemblies. Available in a range of strand counts, cross-sectional areas, and packing configurations, Harnawa’s Bunched Bare and Tinned Copper Conductors offer versatile, customizable solutions that meet the stringent quality and performance demands of modern electrical and electronic systems.

Our Solar Back Films / PV Films by JBF Brand are designed to protect and enhance the efficiency of solar modules, offering excellent durability and UV resistance

Our Insulation Crepe Papers offer superior flexibility and durability, making them ideal for applications requiring conformability and high dielectric strength.

Silicone Rubber Tape is a high-temperature, self-fusing insulation tape made from premium-grade silicone elastomer. It is designed for extreme thermal, electrical, moisture and environmental protection applications. Unlike traditional adhesive tapes, Silicone Rubber Tape bonds to itself upon contact — forming a seamless, waterproof, airtight, and electrically insulating layer.

This tape withstands continuous high temperatures up to 260°C and short-term peaks up to 300°C. It is flame-retardant, UV-resistant, ozone-resistant, chemical-resistant and highly flexible, making it ideal for industrial, automotive, aerospace, electrical and maintenance use.

Silicone Rubber Tape is widely used for cable insulation, emergency repairs, moisture sealing, joint protection, heater insulation, busbar wrapping, high-temperature equipment protection and electrical protection in harsh outdoor environments.

Key Features

• Self-fusing silicone rubber tape (no adhesive required)
• Bonds to itself to form a solid, seamless insulation layer
• Continuous temperature resistance up to 260°C (300°C short-term)
• Excellent electrical insulation properties
• Waterproof, moisture-proof and chemical-resistant
• UV, ozone and weather resistant — ideal for outdoor use
• Flexible, stretchable, and easy to wrap around irregular shapes
• Flame-retardant and non-melting under heat
• Ideal for emergency repairs and high-temperature insulation tasks

Applications

• High-temperature cable insulation and splicing
• Busbar insulation and joint sealing
• Electrical maintenance & emergency repairs
• Transformer terminal insulation
• Automotive and aerospace electrical protection
• Industrial heater and furnace insulation
• Pipe protection, sealing and wrapping
• Moisture sealing in harsh outdoor environments

Technical Range

• Material: Silicone Rubber (Self-Fusing Grade)
• Temperature Resistance: 260°C continuous / 300°C peak
• Dielectric Strength: High
• Thickness: 0.20 mm – 0.80 mm
• Width Options: 10 mm – 50 mm
• Color: Red / Black / White / Blue (custom)
• Tape Type: Self Amalgamating, Non-Adhesive Silicone Tape

Advantages

• No adhesive — forms a permanent, seamless insulation layer
• Withstands extreme temperatures and weather conditions
• Excellent chemical and moisture resistance
• Long-lasting insulation in harsh industrial environments
• Suitable for both industrial and emergency repair use

Cotton Insulation Tape is a high-quality woven tape made from 100% cotton yarn, designed specifically for electrical insulation, coil binding, cable bundling and reinforcement applications. It is widely used in motors, transformers, alternators, generators, wiring harnesses and industrial electrical systems where strong mechanical and thermal performance is required.

The woven cotton structure provides excellent flexibility, breathability, knotting ability and varnish absorption, making it ideal for varnish-impregnated insulation systems. Cotton Insulation Tape performs reliably in Class A (105°C) and Class B (130°C) insulation environments, making it suitable for household appliances, industrial machinery and electrical equipment.

Cotton Tape does not melt under heat, maintains structural strength under moderate temperatures and provides superior handling for tight wrapping around irregular shapes. It is preferred by rewinding shops, appliance manufacturers, motor repair workshops and electrical assembly units.

Key Features

• Made from 100% woven cotton yarn
• Excellent varnish absorption & breathability
• High flexibility for tight wrapping and binding
• Suitable for Class A and Class B insulation systems
• Good tensile strength and knot-holding ability
• Tear-resistant and dimensionally stable
• Compatible with epoxy, polyester and insulating varnishes
• Cost-effective and widely used in electrical repair industries

Applications

• Motor winding insulation and coil binding
• Transformer insulation wrapping
• Cable harnessing and wire bundling
• Binding mica sheets, DMD, PET and composite laminates
• Appliance motors, fan motors, pump motors
• General-purpose electrical insulation and binding
• Control panel and industrial wiring applications

Technical Range

• Material: Woven 100% Cotton
• Thermal Class: Class A 105°C / Class B 130°C
• Thickness: 0.20 mm – 0.40 mm
• Width Options: 10 mm – 50 mm
• Color: White / Off-White
• Tape Type: Non-Adhesive Woven Cotton Insulation Tape

Advantages

• Economical, reliable and highly flexible insulation tape
• Excellent for varnish impregnation and sealing
• Provides stable performance in moderate temperature environments
• Ideal for OEM motors, rewinding jobs and appliances