Home
loading content

High Temperature

High temperature fiberglass sleeving is engineered to deliver superior protection for wires and cables in extreme heat environments. With increasing demand for robust insulation in industrial, automotive, and aerospace applications, this sleeving stands out for its exceptional thermal resistance and mechanical durability.

Performance data shows a strong interest in fiberglass sleeving, a keyword with high search volume and commercial value. By focusing on advanced materials and compliance with industry standards, high temperature sleeving ensures reliable performance where standard insulation fails.

10 items

Techflex
FGN0.25
Approx LBS/MFT20
MaterialResin Coated Fiberglass
Max. Temp650C
Min. Temp-70C
Nom. Wall Thick. (in).031, .031”
Size (in)1/4, 1/4”
Specific Gravity1.0-1.8
Starting at 0.50 per FT 
Techflex
FGN0.38
Approx LBS/MFT33
MaterialResin Coated Fiberglass
Max. Temp650C
Min. Temp-70C
Nom. Wall Thick. (in).043, .043”
Size (in)3/8, 3/8”
Specific Gravity1.0-1.8
Starting at 0.80 per FT 
Techflex
FGN0.50
Approx LBS/MFT48
MaterialResin Coated Fiberglass
Max. Temp650C
Min. Temp-70C
Nom. Wall Thick. (in).046, .046”
Size (in)1/2, 1/2”
Specific Gravity1.0-1.8
Starting at 1.29 per FT 
Techflex
FGN0.63
Approx LBS/MFT53
MaterialResin Coated Fiberglass
Max. Temp650C
Min. Temp-70C
Nom. Wall Thick. (in).046, .046”
Size (in)5/8, 5/8”
Specific Gravity1.0-1.8
Starting at 1.43 per FT 
Techflex
FGN0.75
Approx LBS/MFT64
MaterialResin Coated Fiberglass
Max. Temp650C
Min. Temp-70C
Nom. Wall Thick. (in).046, .046”
Size (in)3/4, 3/4”
Specific Gravity1.0-1.8
Starting at 1.55 per FT 
Techflex
FGN0.88
Approx LBS/MFT87
MaterialResin Coated Fiberglass
Max. Temp650C
Min. Temp-70C
Nom. Wall Thick. (in).046, .046”
Size (in)7/8, 7/8”
Specific Gravity1.0-1.8
Starting at 1.67 per FT 
Techflex
FGN1.00
Approx LBS/MFT105
MaterialResin Coated Fiberglass
Max. Temp650C
Min. Temp-70C
Nom. Wall Thick. (in).057, .057”
Size (in)1, 1”
Specific Gravity1.0-1.8
Requires Quote per FT 
Techflex
FGN1.50
Approx LBS/MFT160
MaterialResin Coated Fiberglass
Max. Temp650C
Min. Temp-70C
Nom. Wall Thick. (in).061, .061”
Size (in)1 1/2, 1 1/2”
Specific Gravity1.0-1.8
Requires Quote per FT 

What is High Temperature Fiberglass Sleeving?

High temperature fiberglass sleeving is a specialized insulating sleeve designed to protect wires, cables, and hoses from heat, abrasion, and electrical hazards. Constructed from woven fiberglass yarns, it offers outstanding thermal stability and mechanical strength.

Applications

  • Industrial furnaces and ovens
  • Automotive engine compartments
  • Aerospace wiring harnesses
  • Power generation equipment
  • Electrical enclosures exposed to high temperatures

Construction

  • Material: Uncoated or resin-coated fiberglass
  • Wall Thickness: 0.031" to 0.046" nominal
  • Expanded I.D.: 0.039" to 1.026" (various sizes)
  • Color: Natural (standard)

Specifications

  • Temperature Range: -70°C to 650°C (continuous)
  • Voltage Rating: Meets UL 1441, NEMA VS-1, UL VW-1, NEMA TF-2
  • Specific Gravity: 1.0–1.8
  • Quantity: Available in 100 ft lengths
  • Compliance: UL, CSA, NEC standards

Additional Information

High temperature fiberglass sleeving is ideal for environments where conventional insulation would degrade or fail. Its resistance to chemicals, moisture, and abrasion ensures long-term reliability. Choose from a wide range of diameters and wall thicknesses to meet your specific application requirements.