Glass Tape For Insulation
 | Glass Tape For Insulation
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High Heat Tape Company is a manufacturer of glass tape for insulation, supplied as industrial rolls for electrical and thermal insulation work. This woven fiberglass insulation tape roll is made with stable glass fibre backing for motor winding, transformer coils, cable wrapping, switchgear parts, and heated equipment areas. Each roll is produced with attention to slitting width, clean edge condition, reduced fraying, batch consistency, and tensile strength for repeated insulation wrapping in factory use.
Product Photos
Technical Data Sheet
Item | Typical Value |
Product type | Glass tape for insulation |
Backing material | Woven glass fibre backing |
Available structure | Non-adhesive, coated, or adhesive-backed |
Adhesive option | Silicone, acrylic, or rubber adhesive system |
Color | Natural white |
Typical total thickness | 0.13 mm-0.25 mm |
Common roll width | 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 50 mm |
Custom slitting width | 5 mm-200 mm |
Width tolerance | +/-0.5 mm to +/-1.0 mm, depending on width |
Roll length | 30 m, 50 m, 100 m |
Tensile strength | >=180 N/cm reference value |
Elongation | <=5% reference value |
Dielectric strength | >=1.5 kV reference value |
Short-term temperature resistance | 180 C-220 C, depending on adhesive or coating |
Continuous working temperature reference | 130 C-180 C, depending on insulation design |
Edge condition | Clean slit edge, reduced fraying |
Roll condition check | Flat winding, stable roll tension, even side face |
Batch inspection | Thickness, width, roll length, edge fray, surface cleanliness |
Suggested test before use | Sample wrapping test on actual insulated part |
Applications
- Motor winding insulation, lead fixing, and coil holding
- Transformer coils, layer insulation, and crossover insulation
- Cable wrapping, harness protection, and high-temperature lead insulation
- Switchgear, generator, and electrical component insulation
- Furnace and oven control areas requiring heat-stable wrapping
- Varnish impregnation systems using non-adhesive fiberglass tape
- Thermal wrapping around industrial equipment, pipes, or heated parts
- Anchor and banding work where tensile strength and edge stability are required
Benefits
- Woven glass fibre backing gives low stretch and better shape stability than film-based tapes around heated electrical assemblies.
- Clean slit edges help reduce fraying, loose yarns, and wrapping waste during narrow-width coil or cable work.
- Custom slitting from 5 mm to 200 mm supports different insulation layouts, from small leads to wider thermal wrapping areas.
- Roll tension and side-face condition are checked to reduce telescoping, loose winding, and uneven unwinding during production use.
- Typical tensile strength is referenced at >=180 N/cm, depending on backing thickness, weave density, and coating structure.
- Adhesive-backed and non-adhesive structures allow selection for positioning, varnish impregnation, lacing, layer insulation, or crossover insulation.
- Batch inspection covers thickness, width, roll length, edge fray, surface cleanliness, and winding consistency.
- High-temperature fiberglass insulation roll options can support short-term exposure around 180 C-220 C, depending on adhesive or coating structure.
What Should Be Checked Before Using Glass Tape for Insulation on Coils, Cables, or Electrical Parts?
Before using glass tape for insulation in production, the roll should be checked in the same way as other insulation materials used on the line. The glass fibre backing should have suitable thickness, tensile strength, and heat resistance for the working area. For motor windings, transformer coils, cable wrapping, and switchgear insulation, production teams usually confirm tape width, roll length, coating type, and whether adhesive is needed. Edge condition should not be ignored. A clean slit edge helps reduce loose fibres during wrapping, especially on narrow widths. Sample rolls should be tested on the actual part to observe wrapping tension, edge fray, layer coverage, and insulation fit before batch use.
Product Overview
This glass tape for insulation is made for factories that need a stable wrapping material around motors, transformers, cables, coils, and heated electrical assemblies. The woven glass fibre backing gives the tape low stretch, good dimensional stability, and dependable support where heat, abrasion, and electrical separation must be controlled. It is not a household repair tape. It is selected by thickness, width, roll tension, edge condition, and the actual insulation system where it will be used.
High Heat Tape Company supplies this material in roll format for narrow and medium-width work. Common widths include 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, and 50 mm. For different winding layouts, custom slitting from 5 mm to 200 mm can be prepared. Width tolerance is commonly controlled at +/-0.5 mm to +/-1.0 mm, depending on roll size and application requirements. For narrow coil or lead wrapping, side edges are checked to reduce loose fibres and improve wrapping stability. For wider rolls, we check flat winding, even side faces, surface cleanliness, and stable roll tension.
The product can be supplied as non-adhesive fiberglass tape for varnish impregnation, lacing, and wrapping, or as adhesive-backed glass cloth electrical insulation tape with silicone, acrylic, or rubber adhesive options. Typical total thickness is 0.13 mm-0.25 mm, depending on backing and coating structure. Roll lengths of 30 m, 50 m, and 100 m are commonly used in industrial insulation work. Before bulk use, sample wrapping is recommended to confirm fit, edge fray behavior, layer coverage, dielectric requirement, and heat exposure performance on the actual insulated part.
How Does Roll Format Affect Slitting Accuracy, Edge Condition, and Batch Consistency?
Roll format directly affects how smoothly fiberglass tape for thermal insulation runs during wrapping. A stable roll should unwind evenly without heavy telescoping, excessive looseness, or uneven side edges. When different widths are required, slitting accuracy becomes important because coil wrapping, cable binding, and thermal insulation layers need repeatable coverage. Narrow rolls are normally selected for leads, coils, and small electrical parts, while wider rolls are used for broader thermal wrapping or reinforcement areas. Batch consistency should cover tape thickness, roll tension, width tolerance, surface cleanliness, and edge condition. With woven glass fiber insulation tape, loose yarns or rough edges can slow down work and increase waste, so each roll should be inspected before mass application.
FAQ
Is this tape suitable for both electrical and thermal insulation?
Yes. It is made for high-temperature electrical insulation and thermal insulation use, including motors, transformers, cables, coils, and industrial equipment areas. Dielectric strength should be confirmed according to the actual insulation design.
Can the tape be supplied in narrow custom widths?
Yes. High Heat Tape Company can slit roll widths from 5 mm to 200 mm. Common width tolerance is +/-0.5 mm to +/-1.0 mm, depending on the selected width and roll format.
Should I choose adhesive-backed or non-adhesive fiberglass tape?
Choose adhesive-backed tape when positioning or temporary holding is needed. Choose non-adhesive fiberglass tape for varnish impregnation, lacing, or insulation systems where adhesive is not required.
How should the tape be tested before production use?
Test a sample roll on the actual part. Check wrapping tension, edge fray, layer coverage, dielectric requirement, heat exposure, and bonding behavior if an adhesive version is used.