What is glass cloth tape?
Glass cloth tape is an adhesive tape with a woven glass fibre fabric backing, commonly coated with silicone adhesive. The glass fabric resists heat, abrasion and tearing and acts as an electrical insulator. It is used for motor and coil insulation, high temperature masking and wrapping cables, pipes and components.
- Glass Tape backing is coated with high grade adhesives like acrylic, thermosetting rubber and silicone.
- Provides F or H class insulation.
- High temperature resistant ranging from 150 ℃ to 400 ℃.
- High adhesion & abrasion resistant.
- Flame retardant property.
- High mechanical strength.
- Permanent sealing of high temperature ducts & chambers.
- Used as high temperature masking.
- Used in Aircraft window sealing & many other uses.
More about Glass Cloth Adhesive Tapes
Adhesive Specialities manufactures a specialty adhesive tape for insulation purposes. Glass Cloth Adhesive Tape – F Class is specially formulated with solvent adhesive which gives it a high temperature abrasion resistance. The adhesive tape conforms to ‘F’ Class which can withstand up to 150°C. It is also available with liner if required.
Glass Cloth Tape – F Class is used in FFS packing machines, lamination of sheets, ducting of high temperature applications and high temperature masking applications.
Glass Cloth Tape – H Class is specially formulated with heat curing adhesive which gives it a high temperature abrasion resistance. The tape conforms to ‘H’ Class which can withstand up to 400°C. It is also available with medium tack and thermosetting rubber adhesives if required. Application: H Class is used in FFS packing machines, lamination of sheets, ducting of high temperature applications and high temperature masking applications.
H Class is specially formulated with heat curing rubber adhesive which gives it a high temperature abrasion resistance. The tape conforms to ‘H’ Class which can withstand up to 180°C. Application: H Class is used in FFS packing machines, lamination of sheets, ducting of high temperature applications and high temperature masking applications.
- Glass Cloth backing is coated with high grade adhesives like acrylic, thermosetting rubber and silicone.
- Provides F or H class insulation.
- High temperature resistance ranging from 150 ℃ to 400 ℃.
- High adhesion & abrasion resistant.
- Flame retardant property.
- High mechanical strength.
- Permanent sealing of high temperature ducts & chambers.
- Used as high temperature masking.
Uses of Glass Cloth Tape in Various Industries:
Aerospace & Aviation Industry:
Glass Cloth Tape is widely used in aerospace applications due to its exceptional heat resistance and structural stability. It provides insulation for wiring harnesses, engine components, and heat shields exposed to thermal cycling. As a heat resistant glass fabric tape, it withstands extreme conditions found in aircraft systems. Its flame retardant nature enhances safety compliance. The tape supports long-term performance in both commercial and defense aviation.
Electrical & Electronics Industry:
As an electrical insulation glass cloth tape, it is used for coil wrapping, transformer insulation, motor windings, and slot insulation. Its F Class insulation capability allows it to perform reliably in high heat-generating electrical equipment. It prevents electrical breakdown, enhances dielectric properties, and reduces failure rates. Ideal for long-duty cycle machinery, it maintains adhesion and structural integrity even under thermal overload conditions.
Automotive & Thermal Protection Systems:
Glass Cloth Tape is used for exhaust insulation, thermal shielding, wiring protection, and vibration-resistant cable wrapping. As a high temperature glass cloth adhesive tape, it withstands heat from engines, turbochargers, and battery components in EVs. The tape reduces heat transfer to surrounding parts, improving system efficiency. Its abrasion resistance makes it suitable for heavy-duty industrial and off-road vehicles.
Industrial Manufacturing & High-Temperature Masking:
In manufacturing plants, the tape is used for powder coating masking, furnace and heater insulation, and surface protection during welding or heat processing. As a flame retardant cloth tape, it ensures materials remain protected from sparks, heat, and abrasions. It adheres well to metals, composites, and ceramics, offering long-term reliability. Ideal for environments where thermal protection is critical.
HVAC, Insulation & Thermal Barrier Applications:
Glass Cloth Tape works as a thermal barrier in ducts, insulation panels, heat exchangers, and industrial boilers. It is commonly used in sealing and reinforcing thermal insulation blankets. As a heat resistant glass fabric tape, it prevents heat loss and improves overall energy efficiency. The tape supports vapour barrier systems and maintains structural stability under temperature fluctuations.
Related: double sided glass cloth tape, polyimide tape, aluminium glass cloth tape, cloth tapes, high temperature tapes
Key properties
- Heat resistance
- Tear and abrasion resistance
- Electrical insulation
- Adhesive type: acrylic, thermosetting rubber or silicone
Applications
- Motor and transformer coil insulation
- High temperature masking
- Cable and harness wrapping
- Heat sealing jaws
Single sided vs double sided glass cloth tape
Glass cloth tape is available in single sided and double sided versions.
Glass cloth tape vs polyimide tape
| Tape |
Key point |
| Glass cloth tape |
Thicker, tougher and more abrasion resistant |
| Polyimide tape |
A thin film that suits precise masking and electronics where space is limited |
Specifications
Thickness, widths and temperature class depend on the grade and adhesive. Request the datasheet or contact our team for the grade that suits your application.
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Adhesive Specialities, adhesive tape manufacturer in India. Last updated: 7 October 2026.
Frequently asked questions
What is glass cloth tape used for?
It insulates motor and transformer coils, masks parts during high temperature processes, and wraps cables and components that face heat or abrasion.
Is glass cloth tape the same as fibreglass tape?
Glass cloth tape uses a woven fibreglass fabric, so it is a type of fibreglass tape. In construction, “fibreglass tape” often means drywall mesh tape, which is a different product.
Is glass cloth tape electrically insulating?
Yes. Glass fibre is non-conductive, so glass cloth tape is used as electrical insulation in windings and harnesses. Check the insulation class on the datasheet.
What is the difference between glass cloth tape and polyimide tape?
Glass cloth tape is thicker, tougher and more abrasion resistant. Polyimide tape is a thin film that suits precise masking and electronics where space is limited.
Is double sided glass cloth tape available?
Yes, a double sided version is listed at /product/d-s-glass-cloth-tape/.
What temperature can glass cloth tape withstand?
Glass cloth tape is used in high temperature applications, and the rating depends on the insulation class and adhesive. F class and H class grades are available, so check the datasheet for the rating of the grade you need or contact our team.
