Heat Shrink Tubing, 1/4" - 1/8", White, 3"; 5/Clam, 5 Clams/Master Heat Shrink Tubing, 1/4" - 1/8" 4" L Resists common fluids and solvents. Meets UL 224, 125 ?C; CSA C22.2 No. 198.1, 125 ?C; MIL-DTL-23053/5, Class 1 & 2, AMS 3636 & 3637; DEF STAN 59-79, Issue 3 Type 2a. Continuous operating temperature: -55 ?C (-67 ?F) - 135 ?C (275 ?F). Shrink temperature: 120 ?C (250 ?F) - 250 ?C (480 ?F). 600 V/Mil Dielectric strength. 2:1 shrink ratio.