Insulflex Thermosleeve™: Braided Fiber Yarn Fire Sleeve

Constructed from smooth glass fiber yarn, braided at high yield angles to allow for approximately 25% expansion and contraction.

Heavy wall braided glass fiber sleeve

Thermosleeve™ S is an expandable braided glass fiber sleeve capable of operating at a continuous temperature of 1000°F (538°C).

Designed to expand and contract by approximately 25% of its nominal size, the smooth glass fiber yarn is heat cleaned and coated with an acrylic saturant to eliminate loose fibers, enhance handling characteristics, and improve abrasion resistance. The acrylic saturant begins to decompose around 400°F (204°C), but with no effect on the thermal performance of the sleeve.

Expandability creates custom size range

Due to its wide range of expansion and contraction, Thermosleeve™ S is available in just four nominal sizes that cover a complete range of diameters from 3/8” (10 mm) up to 3-1/2” (89 mm).