is an insulated, temperature-resistant and flame-retardant product used to provide insulation, protection and securement of wires, electrical connections and other items. It is composed of a specially formulated polyolefin and helps to protect wiring by offering environmental protection, abrasion resistance and environmental sealing. By shrinking upon exposure to heat, Heat Shrink Tubing adheres securely to create a waterproof, airtight seal that resists corrosion and prevents wire from loosening. The red color of this Heat Shrink Tubing provides a visible indication that the wires are covered and insulated. Ideal for aerospace and military applications, HellermannTyton's 309-20162 Heat Shrinkable Tubing 2:1 flexible 1.6/0.8 red is available in 6 foot spools and is UL (Underwriters Laboratories) recognized.