Operating Temperature: -55°C to +125°C. Minimum Shrinkage Temp: +70°C. Full Shrinkage Temp: +110°C Maximum. Shrinkage Ratio: 2:1. The heat-shrinkable sleeve is made of PE, polyolefin, EVA and other materials. It has the characteristic of being heated to shrink and tightly wrap on the object. The outer layer has insulation, corrosion resistance and wear resistance, while the inner layer has low melting point, waterproof and high adhesion, often used for sealing, insulation and protection of cables.