More versatile than standard 2:1 heat shrink tubing, our 3:1 shrink ratio allows you to leave connectors on their wires, saving valuable labor time, and are perfect for finishing the ends of a wiring harness. The added expansion translates to a heavier wall that provides added abrasion resistance. Use Polyolefin Heat Shrink Tubing for industrial applications, cable repair, intricate electronics protection, and anywhere you need a versatile seal to insulate and secure electrical components. Heat Shrink Tube’s unique composition melts when heated, creating a seal around interior components that fits closer than any other insulation possible. Heat shrink tube also acts as a sealant for moisture in small spaces. Practical uses for heat shrink include Wire Insulation, Wire Identification, Wire Bundling, Mechanical Protection, Color Coding, Lightweight Harnessing, Strain Relief, and Solder Insulation. We offer several colors, allowing you the freedom to match wire or braided sleeving colors. Our heat shrink tubing is available in bulk reels or "mini" spools.