This semi-flexible, adhesive-lined heat shrink tubing provides a moisture-proof seal for wires, splices, breakouts, and components. Offering excellent insulation and mechanical protection, its high shrink ratio allows for versatile installation. It is resistant to common fluids and solvents and is rated for 600V.This is a 4 ft long, black, adhesive-lined, flexible heat shrink tubing made of polyolefin. It features a 3:1 shrink ratio, with an expanded inner diameter of 1 inch and a recovered inner diameter of 0.335 inches. The recovered wall thickness is 0.083 inches. It is rated for 600V AC and operates continuously between -45°C and 125°C.