Sanhui Company is an authorized agent and distributor designated by Japan's Sumitomo Electric, holding an official agency certification. We specialize in representing products such as Japan's Sumitomo sleeves, Taiwan Huayou heat shrink tubing, Sumitomo electronic wires, and Sumitomo connectors. For other models not listed, please feel free to inquire by phone! Imported Sumitomo Heat Shrink Tubing SUMITUBE W3F2 [Equipped with adhesive for waterproofing on objects with large step differences] Basic Characteristics: (1) Material: Outer layer: XLPE Inner layer: Thermally fusible adhesive (2) Shrinkage temperature: 110°C or higher (3) Shrinkage rate: Inner diameter shrinkage rate: 60% or higher Length change rate: -15% or higher (4) Continuous operating temperature: -55°C to 125°C Features: (1) Compliant with UL and CSA standards (2) Adhesive to metals and plastics, enabling waterproof processing (3) Highly effective for waterproofing objects with large step differences (4) Flame retardant (5) Excellent flexibility (6) Adhesive layer is thicker than SUMITUBE O2B2 Applications: (1) Waterproofing electronic components with large step differences (2) Treatment of wire branch points (3) Insulation protection for wire connection points Note: Before use, please verify waterproofing conditions based on the application environment.