3M Heat Shrink Cable Sleeve HDT is a flexible, heavy wall tubing that provides abrasion, corrosion and chemical resistance. This sleeve has a 3:1 shrink ratio and offers primary electrical insulation for 1 kV rated applications. The flame retardant polyolefin construction features a thermoplastic sealant that provides moisture seal protection.3M Heat Shrink Cable Sleeve HDT is a s split resistant sleeve that offers reliable performance for electrical splices, connections and terminations. The factory applied, heat activated, thermoplastic sealant acts as a barrier against adverse environmental conditions. It is fast shrinking for easy handling and installation while maintaining maximum operating reliability and system protection. It withstands temperatures of 67 to 230 degrees F ( 55 to 110 degrees C). SAE AS23053/15, Class 1 Certified and RoHS 2011/65/EU Compliant.