3M™ Heat Shrink Tubing FP-301 offers durable shrink-fit protection for use in wire-harnessing, split-resistance covering, wire marking, wire bundling, and component packaging. Made of flexible polyolefin, the tubing is self-extinguishing, meets UL 224 All-Tubing Flame Test (except clear), and is suitable for cable splices and terminations to balance electrical and physical, and chemical properties within a variety of industrial and military applications rated up to 600V. The 2:1 shrink ratio tubing is mechanically tough and helps to protect from splits and cold flow while being easily markable. 3M™ Heat Shrink Tubing FP-301 can handle demanding environments within an operating temperature range of -67 °F (-55 °C) to 275 °F (135 °C) and is UL Listed, File E-39100, SAE AS23053/5, Class 1 (all colors), Class 2 (clear), CSA Certified, and RoHS 2011/65/EU Compliant.