HTG Heat Treated Sleeve

HTG Heat Treated Sleeve | High-Temperature Glass Fiber Sleeving – Manufacturer in India

Being one of the top suppliers of HTG heat treated sleeves in India, Harnawa Insulations supplies HTG heat sleeves which are highly resistant to heat. Constructed from densely braided and highly treated glass fiber yarns, Harnawa’s HTG sleeves can resist temperatures up to 650°C and even higher for short periods of time.

Harnawa’s HTG Heat Treated Sleeves are ideal for use in industrial applications where there is the requirement of using sleeves that can withstand sustained heat for long periods of time.

What is HTG Heat Treated Sleeve?

The HTG (High-Temperature Glass fiber) Sleeve is a glass braided sleeve that is subjected to high temperature heat treatment to shape the fiber, clean up loose fibers and set the braid to facilitate easy handling and fitting. HTG sleeve is thus made of high density braiding of glass fiber giving excellent thermal insulation properties over ordinary fiberglass sleeves.

Made of smooth glass fiber yarn braided in high angle, the HTG sleeving can be expanded by about 25% for easy fitting.

Key Features & Advantages

• 650°C Continuous Temperature Rating – Can withstand continuous exposure to extreme heat temperatures, with temporary exposure to extremely high temperatures
• High-Density Braiding Structure – High density braided glass fiber yarn that offers excellent heat resistance and mechanical stability
• Expandable Braid Structure – Allows for expansion and contraction up to 25% due to its high-angle braiding structure
• Excellent Abrasion Resistance – Due to its high-density structure, it is highly resistant to wear and mechanical stresses
• Heat-Set Braid – The high-temperature processing method helps in eliminating any loose fibers in the braid structure and improves handling characteristics
• Flame Resistant – It can withstand high temperatures without burning or deteriorating
• Color Variations – Comes in black and light brown as standard and other colors by special order

Applications of HTG Heat Treated Sleeve

HTG Heat Treated Sleeve is used across industries where sustained high-temperature exposure demands the most robust thermal protection, including:

Components in Furnaces & Kilns – protecting wire and cable in furnaces and kilns that operate at high temperatures

Exhaust System Protection – heat shield protection of exhaust pipe and system components in automotive, marine, and industrial engines

Components in Industrial Machinery – protection of wires and hoses in machinery subjected to continuous high heat

Low Voltage High Temperature Wiring – protecting low voltage, high temperature wiring

Applications Requiring Flexing & Heat – when repeated flexing along with heat makes other types of sleeving unsuitable

Protection for High Heat Hoses & Pipes – protection of hydraulic hoses and pipes operating in high heat environments

Why Choose Harnawa as Your HTG Sleeve Manufacturer in India

It is important that HTG heat treated sleeving comes from a reliable manufacturer as the braiding density and quality of the heat treatment affect the performance of the sleeve at high temperatures. The name of Harnawa Insulations as a reliable manufacturer of HTG heat treated sleeve in India rests upon:

• Quality-Controlled Production – Each batch undergoes rigorous testing for braid density, thermal efficiency, and mechanical strength.
• Certification – We operate with ISO 9001:2015 certification, in addition to being compliant with RoHS, REACH, UL, and CE standards.
• High Temperature Efficiency – Produced for stable high-temperature performance up to 650°C, designed to cater to the toughest industrial settings.
• Multiple Sizes & Colors – Can be purchased in different sizes and colors.
• National Distribution Network – Supplying to furnace machinery manufacturers and automotive and industrial OEMs from our office in Mumbai and manufacturing facility in Bhiwandi.
• Technical Assistance and Bulk Purchases – Our sales professionals offer technical assistance and competitive pricing on bulk orders.

If you’re looking for a reliable HTG heat treated sleeve manufacturer and supplier in India, Harnawa provides premium-grade sleeving engineered for your most extreme thermal applications.

Explore Our Complete Range of Insulation Products

HTG Heat Treated Sleeve is part of Harnawa’s wider portfolio of electrical insulation and cabling solutions. Depending on your project requirements, you may also need:

• Aramid Papers – High-temperature insulation paper for motor and transformer winding applications.
• Insulation Tapes – High Temperature – Aramid, polyester, and polyimide tapes for coil wrapping and electrical insulation.
• Fiberglass Insulation Sleeves – Our full range of braided, varnished, silicone-coated, and PU-coated sleeves for cable and wire protection.
• Fiberglass Insulated Cables – PTFE / Silicone – High-temperature cable solutions, including PTFE and silicone rubber insulated variants.
• Laminated Insulation Paper Composites – NMN, NHN, and AHA composite papers for Class H insulation systems.
• Insulation Sheets & Electrical Insulation Components – PTFE sheets, mica sheets, and slot wedges for electrical assembly insulation.
• Fiberglass Yarn – E-Glass and C-Glass yarn used in insulation sleeving and braided components.
• Insulating Varnishes and Thinner – Elantas varnishes for winding impregnation and finishing.
• Polyester Films Insulation – BOPET and polyester film insulation for general-purpose electrical applications.

Source your complete electrical insulation and sleeving requirements from a single trusted manufacturer and supplier in India.

Frequently Asked Questions

Question 1: At what temperature can HTG Heat Treated Sleeve work?

HTG sleeving can be used continuously up to 650°C and short time exposure to even higher temperatures.

Question 2: How much can HTG sleeving be expanded?

Due to high yield angle braiding it can be expanded and reduced by approximately 25%.

Question 3: What distinguishes HTG sleeving from the regular fiberglass one?

High Temperature HTG sleeving is treated with special process at high temperature where loose fibers and braiding are being set giving it a denser and more heat resistant sleeve compared to regular fiberglass.

Question 4: What colors are available for HTG Sleeve?

Colors available are black and light brown with possibility of ordering any other color.

Question 5: Does Harnawa offer HTG Heat Treated Sleeve throughout India?

Yes. Being one of the largest manufacturers and suppliers of HTG heat treated sleeve in India, Harnawa Insulations supplies furnace equipment manufacturers and Automotive Original Equipment Manufacturers (OEMs) all over India from our factories in Mumbai and Bhiwandi.