Medium-wall heat shrink tubing

Medium-wall heat shrink tubing consists of two layers: the heat shrink tubing itself and a layer of adhesive lining. This adhesive layer is located on the inside of the shrink tubing and melts when the shrink tubing is heated during shrinking. The adhesive lining ensures a watertight seal, ensuring that water and dust cannot reach the object on which the heat shrink tubing is used.