180 Pieces Black Waterproof Heat Shrink Tubing Kit - 3:1 Double Wall Heat Shrink Tubing - Adhesive Coating - Thermo Sleeving

3:1 RETRACTION RATIO - Takes back one third of its original diameter and ensures optimal sealing. Eliminates the problem of 2:1 tubes not shrinking enough. GLUE INSIDE - When heat is applied, the glue comes out and seals the connection, creating a waterproof, long-lasting insulation. VARIETY OF SIZES - We have included 7 most commonly used diameters ranging from 2.3 to 19.05mm. The heat shrink tubing is pre-cut at 89mm. EASY TO USE - Simply slide the heat shrink tube over your connection point and apply heat. Professional connections made in seconds. DOUBLE WALL TUBE - Outer wall provides abrasion resistance. The interior wall creates a tight seal and strain relief.Product Description HEAT ACTIVATED ADHESIVE Creates a watertight seal Greater tensile strength Resistant to stretching and vibration 3:1 SHRINK RATIO Returns to one third of its original diameter More versatile than 2:1 sleeving No air gap between wire and sleeving WATERPROOF Connection is watertight Wire corrosion protection Can be submerged in water Super versatile heat shrink tubing Are you looking to repair a damaged wire, seal out moisture, or provide better strain relief? Waterproof heat shrink tubing is an easy-to-use solution for automotive, marine, DIY and home electrical wiring projects. It can be used in a variety of applications such as: Electrical insulation (wire repair, electrical connector wire insulation, charging cable protection, solder joint insulation).Environmental seal to protect against moisture, UV and fuel Strain relief for electrical connectors Identifying wires and cables (color coded) Bundling loose wires (usually in wire harnesses) Creating thermal insulation for heat sensitive components Protecting surfaces from abrasion, peeling and denting. Shrink Ratio 3:1 Shrink Tubing When heat is applied, this heat shrink tubing shrinks back to one third of its original diameter. Its high recovery rate allows most damaged cable jackets to be repaired without removing connectors. Therefore, 3:1 heat shrink tubing can be used in many more applications than 2:1 heat shrink tubing. Additionally, 3:1 marine heat shrink shrinks more tightly around wires and connectors, eliminating any air gaps.Heat Activated Adhesive Liner This is a waterproof heat shrink tubing with the inner adhesive layer. When heat is applied, the heat shrink tubing straightens and the internal adhesive layer melts. A small bead of transparent adhesive (approximately 1 mm wide) becomes visible at the end of the heated sheath. Once cooled, it forms a rigid seal. Heat activated glue adheres strongly to wires, connectors or any other surface. When the glue flows, it repels air and fills the gaps between the wire and the tube, making the connection watertight. For best results we recommend using a heat gun. Double Wall Heat Shrink Tubing Marine grade double wall heat shrink tubing provides improved rigidity and abrasion resistance. The double-walled jacket design gives it an increased ability to resist wear.This metal wire heat shrink tubing is flame retardant.