Heat shrink cable sleeves are widely used in electrical work to insulate wires, provide strain relief, and bundle cables. These sleeves are made from thermoplastic materials that shrink when heat is applied, forming a tight fit around cables or connectors.

One of the main functions of a heat shrink sleeve is electrical insulation. It helps prevent short circuits and protects against abrasion or moisture. In environments where wires may rub against sharp edges or experience frequent movement, heat shrink sleeves add a layer of protection to extend cable life.

These sleeves come in various sizes and shrink ratios to suit different cable diameters. The shrink ratio indicates how much the sleeve will reduce in size when heated. For general applications, a 2:1 ratio is common, while specialized uses may require 3:1 or higher.

Heat shrink cable sleeves are easy to apply. After cutting the sleeve to the desired length, users place it over the target area and use a heat gun to evenly apply heat. As the material shrinks, it conforms tightly to the shape of the cable.

Overall, heat shrink sleeves are a practical solution for managing and protecting wiring in electronics, automotive, and industrial projects.