Expandable braided sleeving is very similar to those "Chinese Finger Cuffs" that we've all gotten our fingers stuck in.. When you push the end back, the sleeving expands to go over wires easily, and then when you let go, the sleeving comes back to its original diameter (or the diameter of your wire harness or bundle, whichever is larger).
Ethylene-Chlorotrifluoroethylene (E-CTFE) is sold under the tradename Halar. It is a highly chemical resistant material with excellent thermal stability, high moisture resistance, and very low outgassing. Because of its low smoke generation during a fire, it has been found suitable for plenum applications. Halar has also been approved by NASA for use in the space program due to its low outgassing.
Halar Braided Sleeving is used in aerospace, military, fiber optic, and construction applications because of its high fire retradancy, low smoke generation, and low outgassing properties. Halar is a very cost effective alternative to Teflon because of these properties, and its high temperature resistance.
Made from 0.011" (11 mil) Halar® (E-CTFE) Ethylene-Chlorotrifluoroethylene copolymer monofilament
Chemically inert, thermally stable
High Dielectric strength
Superior chemical, gas and moisture resistance
Continuous temperature rating 150°C
Plenum rated material UL2024 (formerly UL910) and NFPA262
UL VW-1 Fire Retardant.
Abrasion and cut resistant
Low out-gassing, suitable for plenum applications
Limiting Oxygen index (LOI): 64%
Excellent cut through and abrasion resistance
Continuous use temperature of -70°C to 150°C (-103°F to 302°F)
Melt temperature of 240°C (464°F)
Expands up to three times its resting diameter
Registered in the NASA database for low outgassing (under CS Technical as manufacturer)