Use the Gardner Bender 3/32 inch Black Polyolefin Heat Shrink Tubing for cable insulation, marking and bundling. The flame retardant polyolefin construction resists common fluids and solvents. Heat shrink tubing3/32" x 4"Great for cable insulation, marking and bundling, with superior mechanical, abrasion and moisture protectionFlame retardantResists common fluids and solvents -67 degrees F to 275 degrees F continuous operating temperature250 degrees F to 480 degrees F shrink temperature600 V/Mil dielectric strength2 to 1 shrink ratioPolyolefin