3:1 heat shrink tubing shrinks to about one-third of its supplied diameter when heated. Browse Sumitomo flexible polyolefin options in clear and multiple colors, available by the foot in several sizes. Select custom-printed packs are available in select diameters. Compare starting diameter, color and package format to find a fit for cables and connectors.

Economical & Easy To Install Heatshrink Tubing

Heat activated tubing used in waterproofing, color identification, strain relief and protection.

Sumitube 3:1 polyolefin heat shrink tubing is an effective and economical way to professionally finish the ends of any wire harness application. The over-expanded product configuration easily fits over the end of a connector, and shrinks down to 33% of its original diameter to fit snugly over the wires. With our wide assortment of bright colors, now you can attractively color coordinate the ends of our expandable braided sleeving.