3M Cold-Shrink Tubing

The 3M™ 8420 and 8430 Cold-Shrink Insulation Tubes offer a safe, durable, and tool-free insulation solution for electrical and non-electrical applications. They are specifically designed for the primary insulation of solid-insulated wires and cable splices up to 1,000 volts and are suitable for both indoor and outdoor use.

The innovative cold-shrink system is based on a pre-stretched EPDM tube supplied on a removable support spiral. Once positioned, the tube automatically contracts to form a tight, elastic, and watertight seal—without the need for heat or special tools.

Made from high-quality EPDM rubber, which is chloride- and sulfur-free, the hoses offer excellent weather and temperature resistance from -40 °C to +90 °C. They are suitable for various cable cross-sections and provide not only electrical insulation but also mechanical protection and shielding against environmental influences.

In addition, they are ideal for communication lines, cable sheath repairs, and other non-electrical sealing applications. In cases of prolonged UV exposure, an additional layer of Scotch® Super 33+™ Vinyl Insulation Tape or Scotch® Silicone Rubber Tape 70 is recommended to further extend service life.