Tetraglas® and Tetraglas 3000® Sleeves

Our high-temperature E-glass fiberglass and amorphous silica sleeves provide unique physical characteristics for better sealing performance at 1000°F (540°C) and 1800°F (980°C) operating temperatures. These high-temperature sleeves are resistant to most acids and alkalis. They’re commonly used to protect hoses, wires, and cables against weld splatter, fire, extreme heat, and molten metal.

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Quick Reference


  • E-Glass Fiberglass
  • Amorphous Silica


  • Braided

Recommended Operating Temperature

  • Tetraglas®: 1000°F (540°C)
  • Tetraglas 3000®: 1800°F (980°C)

Size Range

  • Tetraglas®: 1/4″ (6.4 mm) to 5″ (127 mm) width, 1/8″ and 1/16″ thickness
  • Tetraglas 3000®: 1/4″ (6.4 mm) to 4″ (101.6 mm) width, 1/16″ thickness


  • OEM
  • Welding
  • Hose Fabrication
  • Heavy Industrial
  • Metals
  • Aerospace
  • Automotive
  • Locomotive
  • Heavy Equipment


  • Wiring, Hose & Cable Heat & Flame Protection
  • Insulation & Heat Containment

Custom Options

  • Special Bulk Packaging
  • Vermiculite Coating
  • PTFE Coating
  • Graphite Coating
  • Saturant Coating

More Information

Tetraglas® Fiberglass Sleeves

Tetraglas® sleeves are braided with high-quality E-glass fiberglass yarns and provide flexibility, durability, and thermal containment. They will not burn and remain suitable for use in applications with temperatures up to 1000°F (540°C). Our braided fiberglass sleeves can be heat treated or coated with vermiculite, PTFE, graphite, or acrylic saturant.

Tetraglas 3000® Silica Sleeves

Tetraglas 3000® sleeves are braided using amorphous silica yarns and feature a 1/16″ wall thickness. Silica sleeves will not burn and are suitable for use in continuous temperatures up to 1800°F (980°C). A vermiculite coating can be applied for increased abrasion resistance.

Read Our Thermal Protection Product Guide

Need some help navigating your project needs and our technical textile solutions? Browse Davlyn Group’s guide for thermal protection solutions.