is an insulated, adhesive-lined tubing used to create an environmental seal around wire harnesses. It is designed to protect connections from water, dust, and other environmental elements. Heat-Shrinkable Sleeve 2:1 is designed for supporting, bundling, and protecting cables as well as providing identification with cable Markers. It is made of a tough, flexible,Polyolefin and it has a shrink ratio of 2:1. It is waterproof and provides protection for connections and wires from water, dust, and other contaminants.