Create a permanent seal without applying heat. Also known as cold-shrink tubing, this tubing has a removable spiral-wound core. Slide the tubing over wire and cable and pull out the core. When the core is removed, the tubing contracts and conforms to the underlying cable. The length shrinks by several inches. Made of rubber, it resists chemicals including acids, alkalies, and ozone. Resistant to UV, it won’t fade or discolor when exposed to sunlight.

Silicone rubber tubing withstands a wider temperature range without degrading than EPDM rubber tubing. It is also more flexible for use in tight spaces.

Dielectric strength is the maximum voltage a material can handle before it starts to breakdown.