GORILLA WATERPROOF PATCH AND SEAL #4612502 | Gorilla waterproof patch and 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 in wide use it to patch holes, cracks, gaps and tears, even underwater. Excellent for Home, Auto, Marine, Camping, RVs, Outdoors, and more.