3:1 Marine Grade Dual Wall Heat Shrink Tubing Roll 3/4" 30ft Black Adhesive Lined, Waterproof Sealed, Industrial Heavy Duty, Flame Retardant, 3:1 Shrink Ratio, Dual Wall Insulation

3:1
Shrink Ratio: This shrink tubing contracts to one-third of its original size when heat is applied, offering greater resistance to stretching and vibration than standard heat shrink, along with enhanced tensile strength.
Dual Wall Shrink Tube: This dependable, long-lasting adhesive-lined heat shrink tubing features two layers, providing a waterproof and sealed barrier.
Flame-retardant and Low Smoke: This electrical shrink wrap tubing is constructed from polyolefin with an inner layer of meltable adhesive, capable of withstanding temperatures from -67 to 257 degrees Fahrenheit (-55 to 125 degrees Celsius).
Easy to Use: Simply slide the heat shrink tube over your connection point and apply heat, creating professional insulated connections in seconds.
Widely used: This heat shrink tubing is primarily utilized for electrical insulation of wires, solder joints, connectors, and terminals; it can also serve to prevent damage, offer strain relief, and bundle wires. The size of this heat shrink tubing is indicated by its round inner diameter (diameter when round) and is delivered in a flattened state (flat width). For instance, a heat shrink tubing labeled as "2 inches (50mm) diameter" will have a flat width of roughly 3 inches (75mm). Please choose the appropriate size based on the round inner diameter