Shrinktek Heat Shrink Tubings - Insulate, Protect & Identify SPLT Shrinktek heat shrink is suitable for providing insulation to electrical equipment that is sensitive to heat exposure. Thorne & Derrick are the largest UK distributor of heat shrink tubings and sleevings including 3M, Panduit, Hellermann Tyton, DSG Canusa, Shrinktek and Thomas & Betts. Stock lines include thin, medium and thick wall adhesive lined heat shrink sleeves and moulded shapes (heat shrink cable caps, cable breakouts and cable boots) - insulate, seal, protect with heat shrinkable tubing. Shrinktek Heat Shrink Tubes Shrinktek heat shrink tubing is available in a variety of material types designed to operate at a range of temperatures from -65°C to +260°C. The heat shrink tubing can be thin wall, standard wall or medium wall tubes with or without an adhesive inner coating. Most heat shrink tubing is flame retarded or self extinguishing with a range of shrink ratios from 2:1 to 4:1 - Shrinktek heat shrink is available in an extensive range of colours.