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High Temp Silicone Fiberglass Sleeving

  • Made of alkali-free glass fibers, with silicone rubber (or acrylic) coated outer layer. 
  • Compliance with UL, RoHS, REACH certificate. 
  • Excellent flame retardant, dielectric strength and oil resistance
  • Outstanding high temperature resistant and heat aging resistant. 
  • 19+ years manufactuer, 25,000 square meters factory workshop. 
  • OEM & ODM service available. 
  • Widely used for wire harness insulation protection in new energy vehicles, special vehicles, rail transit, military, and aerospace sectors.
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  • NS-GF200RUB-D

  • Volsun


Product Overview


In industrial environments where wires, hoses, and cables face extreme temperatures and mechanical abuse, the High Temp Silicone Fiberglass Sleeving provides superior protection that extends component life and enhances operational safety. This innovative sleeving combines the thermal resistance of fiberglass with the flexibility and chemical resistance of high-grade silicone, creating a protective barrier that withstands intense heat, abrasion, and environmental hazards. Engineered for easy installation and exceptional durability, it serves as a critical protective layer in applications ranging from industrial machinery to aerospace systems, where conventional protective covers would quickly fail under harsh conditions.


Product Features


Extreme Heat Resistance

The sleeving is designed to excel in high-temperature environments, providing continuous protection at 260°C (500°F) and short-term protection up to 300°C (572°F) . Unlike PVC or neoprene sleeves that degrade above 100°C, this silicone-fiberglass combination retains its protective properties even after prolonged heat exposure, with less than 5% weight loss after 1000 hours at 200°C . It also offers excellent flame resistance, achieving a UL 94 V-0 rating without compromising flexibility.


Robust Mechanical Protection

Constructed with a woven fiberglass core coated in high-purity silicone rubber, the sleeving delivers exceptional abrasion resistance exceeding 100,000 cycles in wear testing—5-10 times greater than standard sleeves . It provides a tear strength of 20 N/mm and puncture resistance that protects underlying components from sharp edges and debris . The material's flexibility allows it to expand up to 150% of its original diameter for easy installation over connectors and irregular shapes.


Chemical & Environmental Resistance

The silicone coating provides excellent resistance to oils, solvents, hydraulic fluids, and industrial chemicals, maintaining integrity in harsh operating environments . It exhibits superior weatherability with UV stability that prevents degradation from sunlight exposure, making it suitable for both indoor and outdoor applications . The material is also resistant to mold, mildew, and fungus growth, ensuring reliability in humid environments.


Product Parameters


Category

Specification

Value

Test Method

Thermal Properties

Continuous Operating Temperature

260°C (500°F)

UL 746B


Short-Term Exposure Temperature

300°C (572°F)

ASTM D648


Weight Loss (1000hr @200°C)

<5%

ISO 2578


Flame Rating

UL 94 V-0

UL 94

Mechanical Properties

Abrasion Resistance

100,000+ cycles

ASTM D3884


Tear Strength

20 N/mm

ASTM D624


Expansion Capacity

150% of original diameter

Manufacturer Test


Thickness

0.3 mm - 1.2 mm

ASTM D374

Material Properties

Construction

Fiberglass Core/Silicone Coating

Manufacturer Spec


Chemical Resistance

Oils, Solvents, Hydraulics

ASTM D543


UV Resistance

Excellent

ASTM G154

Electrical Properties

Dielectric Strength

25 kV/mm

ASTM D149


Product Applications


Industrial Machinery

Protects hydraulic hoses, cable assemblies, and wire harnesses in manufacturing equipment, presses, and industrial ovens. Withstands high temperatures from motors and heating elements while resisting oils and coolants.

Automotive & Transportation

Shields wiring harnesses, fuel lines, and brake cables in engines and undercarriage applications. Protects against heat from exhaust systems and abrasion from road debris.

Aerospace & Defense

Used in aircraft engine compartments, avionics systems, and ground support equipment where lightweight, high-temperature protection is critical. Meets aerospace flame and smoke requirements.

Renewable Energy Systems

Safeguards cables and hoses in solar panel installations, wind turbine nacelles, and geothermal equipment. Withstands outdoor exposure and temperature extremes while resisting UV degradation.


FAQ


How does this sleeving install over existing cables or hoses?

The sleeving features high expandability (up to 150% of original diameter) that allows it to be easily pulled over connectors, fittings, and irregular shapes without damage . For large diameters or complex assemblies, it can be slit lengthwise and secured with high-temperature silicone tape, maintaining full protective properties while simplifying installation.

What sizes are available to accommodate different components?

Standard inner diameters range from 3 mm to 50 mm, with custom sizes available for specialized applications . The sleeving is supplied in continuous lengths of 50 meters, 100 meters, or cut-to-length pieces, providing flexibility for both small repairs and large-scale installations.

Is it suitable for electrical insulation applications?

Yes, with a dielectric strength of 25 kV/mm, the sleeving provides excellent electrical insulation for high-voltage applications up to 10 kV . It's commonly used to insulate bus bars, transformer leads, and high-temperature electrical connections where both thermal protection and electrical isolation are required.

How does it perform in continuous high-temperature applications?

The sleeving is engineered for long-term performance in continuous 260°C environments, with testing confirming less than 5% degradation after 10,000 hours of exposure . Unlike heat-shrink tubing that can become brittle, it maintains flexibility and protective properties, making it ideal for permanently hot locations like engine bays and industrial furnaces.


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