uxcell Heat Shrink Tubing 3:1 Ratio 19.1 mm Diameter 9.2 M with Adhesive Dual Wall Heat Shrink Tube Waterproof Seal Black Dual wall heat shrink tubing has excellent electrical insulation and excellent sealing properties, suitable for wire connections, cable end protection and insulation, wire harnesses, electronic components, and electrical DIY. Length: 9.2 M; Diameter before shrinkage: 19.1 mm; Ratio: 3:1. The heat shrinkage ratio of the heat shrink tubing is 3:1, shrinking to 1/3 of its original size. When the adhesive-lined tube is heated, the inner layer adhesive melts at the same time as the tube shrinks, and after the tube and adhesive cool, the adhesive flows and fills the small spaces between the heat shrink tube and the object, resulting in an IP68 waterproof seal. * ┈ ┈ ┈* ┈ ┈ ┈* ┈ ┈ ┈ * ┈ ┈ ┈ * ┈ ┈ * ★ Instant purchase OK ※ Please check the actual photos for the condition of the product! ※ Opened once for photography and inspection. # Natsu's product list is here ✨ ☜ 25-62599