Insultab’s polyolefin tubing is a highly flexible heat shrink tubing with a low shrink temperature and excellent abrasion resistance. This thin wall heat shrink tubing will insulate, identify, bundle, protect and repair in a wide variety of electrical, mechanical, commercial, and military applications. Select polyolefin in black and colors for flame retardant heat shrink tubing. Polyolefin clear heat shrink tubing is not flame retardant.