Gorilla Waterproof Patch &Seal Tape instantly seals out water, air and moisture. With an extra thick adhesive layer and UV resistant backing this tape conforms to form a permanent bond indoors and out. At 4" wide use it to patch holes, cracks, gaps and tears, even underwater. Excellent for Home, Auto, Marine, camping, RVs, Outdoors and more! Gorilla Waterproof Patch & Seal Tape instantly seals out water, air and moisture. With an extra thick adhesive layer and UV resistant backing this tape conforms to form a permanent bond indoors and out. At 4" wide use it to patch holes, cracks, gaps and tears, even underwater. Excellent for Home, Auto, Marine, camping, RVs, Outdoors and more!