Harnawa Insulations Private Limited

Acrylic Sleeves are produced by curing a modified acrylic resin on continuous fiberglass braid, It is resistant to most acids, organic solvents, oils and water and exhibit fair resistance to alkalis. They are compatible with modified polyester, acrylic, epoxy, phenolic and wire enamels and are designed to perform for long periods in a 155 °C range without loss of any electrical or physical properties.

Heat treated sleevings are coated with Silicone Varnish. A superior class 'H' insulating designed for Class 180 °C insulating systems, Silicone coated sleeving will conform to bends required in complex wiring systems without cracking or creasing even when held in such positions permanently. Reinforced with braided Fibreglass construction the silicone Varnish coating is extremely tough & flexible, withstands rough assembly handling and mechanical stress without the loss of insulating capability. Resistant to inorganic acids alkalis and aliphatic hydrocarbons.

Silicone Elastomer Fiberglass Sleeves are high-performance insulating solutions designed for applications demanding superior thermal and electrical resistance. Constructed by coating braided fiberglass with high-grade silicone elastomer, these sleeves exhibit excellent dielectric strength, mechanical durability, and flexibility. They are capable of withstanding continuous operating temperatures up to 200°C, making them ideal for environments exposed to extreme heat. The smooth silicone outer layer not only enhances abrasion resistance but also ensures easier routing through tight or dynamic installations, without compromising on flexibility or insulation integrity.

These sleeves are extensively used across a range of high-temperature and high-voltage environments including electric motors, alternators, generators, power transformers, control panels, and wiring harnesses in automotive and aerospace systems. They are particularly valuable in applications where wire protection against thermal stress, mechanical wear, and dielectric failure is critical. Industries such as electric vehicle manufacturing, industrial automation, railways, defense electronics, and renewable energy systems rely on silicone elastomer fiberglass sleeves to ensure operational reliability and safety in their electrical infrastructure.

Sleevings are manufactured by coating braided heat treated Fibreglass sleevings with thermosetting polyurethane Varnish qualified for class 'F' (155 °C) operation. It is resistant to acids and most organic solvents and compatible with a broad range of wire enamels, polyester, polyamide, polyimide and polyvinyl formal. By virtue of cross linking, the polyurethane film will not flow upto application of heat. It is available in colours as well as the natural appearance of cured resin.

Sleevings are manufactured by coating braided heat treated Fibreglass sleevings with thermosetting polyurethane Varnish qualified for class 'F' (155 °C) operation. It is resistant to acids and most organic solvents and compatible with a broad range of wire enamels, polyester, polyamide, polyimide and polyvinyl formal. By virtue of cross linking, the polyurethane film will not flow upto application of heat. It is available in colours as well as the natural appearance of cured resin.