Multi-purpose waterproof adhesive tape works for an array of functions. Usually rubber and PVC materials make up waterproof tape. It can also be used to seal joints in plumbing systems, waterproof electric assembly externally, and externally waterproof equipment. The protective cover is adhesive and waterproof which enables multifunctional. For instance, in maritime industry, it serves to seal the boat hull and at the same time, protect electric parts from seawater.