The Design Engineering High Temp Shrink Tubing is an excellent water-tight wire protection for automotive, marine, and much more! Ideal for wires, connectors and terminals this tubing provides protection from heat, dust, dirt, solvents as well as offering electrical insulation.Protects wiring and connectors from heat, dirt, dust, solventsGives a professional, neat finish to wiringShrinks to 1/3 of the original diameter for a water-tight protective sealEasy to apply using a heat gunOver expanded tubing easily fits over the end of wires and connectors and shrinks down to 33% of it's original diameter for a snug water-tight protective seal without a reduction in tube length. It is able to offer radiant heat resistance up to 275° F (135° C) and is easy to apply using a heat gun with a temperature between 120-180° F (49-82° C)