3M Heat Shrink Cable Sleeve ITCSF is a flexible, thick wall sleeve that provides a high degree of mechanical strength. This sleeve has a 3:1 shrink ratio to offer flame retardant insulation for 1 kV rated applications. It has a cross linked polyolefin construction that provides moisture seal protection.3M Heat Shrink Cable Sleeve ITCSF is a split resistant sleeve with a factory applied, adhesive/sealant to offer reliable performance for electrical splices, connections and terminations. It withstands temperatures of 67 to 230 degrees F ( 55 to 110 degrees C). UL Listed, CSA Certified, ABS, MSHA Approved and RoHS 2011/65/EU Compliant.