TECHSPAN HAPO heavy wall heat shrinkable tubing provides maximum reliability for insulating and sealing electrical connections and terminations, including direct burial, URD, and submersible installations. Rated for 1kV, 90°C continuous use, it features an internally coated dual-purpose thermoplastic liner for excellent insulating and environmental sealing protection for splices, connections, jacket repairs, and terminations. Enjoy superior abrasion and impact resistance, and resistance to common fluids and solvents. This tubing conforms to ANSI C-119.1 and Western Underground Guides 2.4 and 2.5.This is a heavy-wall, dual-wall heat shrink tubing with a 3:1 shrink ratio. It has an expanded inner diameter of 0.35 inches and recovers to an inner diameter of 0.12 inches. The tubing is 4 feet long and black in color. It is rated for 600V and 1kV at 90°C continuous use, with an operating temperature range of -55°C to 125°C. The wall thickness is 0.070 inches (1.8 mm). It meets ICEA and NEMA insulation thickness standards and is CSA listed (CSA C22.2, 198.2 LR65789) and UL486D File E132914 listed for underground conductors.