Release Date: 2024-04-10
Glass Cloth Tape - High temperature resistant tape 500℃

Glass cloth is an inorganic material that is non-combustible and has excellent high-temperature resistance. Glass fiber cloth itself can be used at temperatures above 500°C. It also has a high tensile strength, which is over 5 times higher than that of a 25μm PET film. In addition, glass cloth has excellent chemical resistance and flexibility. Due to these properties, glass fiber woven cloth is commonly used as a substrate for tapes.

Glass Cloth Tape

Since glass fiber cloth has good high-temperature resistance, it is often used to make high-temperature resistant tapes, which are usually coated with thermosetting natural rubber or acrylic-based pressure-sensitive adhesives. However, the heat resistance of these two types of adhesives is relatively low, with the heat resistance level of natural rubber being around 130°C and acrylic-based pressure-sensitive adhesive being below 155°C. If coated with silicone-based pressure-sensitive adhesive, the temperature resistance of the tape can reach over 180°C. Silicone glass cloth tapes have good flame retardancy and can meet the requirements of the UL-510 standard with some treatment. Further cross-linking can reduce the contamination of uncross-linked silicone on the substrate.

You-San Technology’ glass cloth tapes are made with high-performance glass cloth as the base material and coated with silicone adhesive. They are primarily used for:

1.Insulation, bundling, and long-term protection of coils, motors, and transformers.

2.Heavy-load, high-temperature equipment or air conditioner contacts.

3.Surface protection in powder coating.

4.Repairs and reinforcement of insulation in mining equipment.

5.Fixing non-sticky high-temperature insulators.

Glass Cloth Tape Glass Cloth Tape

Wire Wrapping

Electrical Insulation


You-San Technology glass cloth tape offers high temperature resistance, high tensile strength, excellent chemical resistance, and superior flexibility, among many other advantages. It can serve as a substitute for foreign brands of tape. The main characteristics are as follows:

Glass Cloth Tape

Product Parameter Table for P0820 Glass Cloth Tape:

Item Typical value Unit Testing methods
Color White - Visually
Thickness 0.2 mm ASTM D-3652
Peel Strength(180°) 5.5(2.2) N/inch(N/cm) ASTM D-1000
Tensile Strength 280(110) N/inch(N/cm) ASTM D-1000
Elongation At Break 4 % ASTM D-1000
Breakdown Voltage 3 KV ASTM D-1000
Insulation Resistance 1×1012 Ω ASTM D-1000
Long-Term Temperature Resistance 200 GB∕T 32368-2015
Short-Term Temperature Resistance 260 GB∕T 32368-2015

Note: The above test results are typical values and not guaranteed values. If there are new insights and experiences, Optics-Tech will make corresponding modifications to this information without further notice. Optics-Tech strongly recommends customers to conduct independent testing prior to using the product to understand its suitability. You-San Technology shall not be liable for any damages or injuries caused by the use of the product.

Comparison Table of You-San Technology and 3M Product Parameters

Item Color Thickness Base Adhesive Peel strength Breakdown







 At Break

3M69 Color 0.177mm Glass Cloth Silicone 4.4N/cm 3000V 4.8x 104Ω 3140N/100mm 5%
P0820 Color 0.2mm Glass Cloth Silicone 2.2N/cm 3000V 1×1012Ω 1100N/100mm 4%

Note: The technical parameters of 3M products are sourced from 3M TDS technical data.

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