Application: WOER TUBE SERIES Dual Wall Heat Shrinkable Tube is manufactured by co-extrusion of polyolefin and sealing for protected articles. Used to protectable bundles wires and metal tubes against water and moisture. 2. Property: Operating Temperature: -55℃ ~ 125℃ Shrinking Temperature: Start at 70℃, and shrunk totally at 120℃ . Inner adhesive shrink Temperature: 70℃ ~ 80℃ Size range:Ф3.2 ~Ф50(1/8 ~ 2inch) Shrink Ratio: 3:1 Available Color: Black, other color can make upon customer抯 special requirement.