Our Polyolefin heat shrinkable tubing shrinks to 50% of its original diameter when heated. It forms a tight mechanical bond even over irregularly shaped materials. Heat-shrink tubing is used to insulate and bundle wires, providing abrasion resistance and environmental protection. Ideal for connections, joints and terminals in electrical work and to create cable entry seals. We have a wide variety of diameters and colors in single and dual-wall tubing.