GORILLA WATERPROOF PATCH & SEAL TAPE BLACK PERFECT FOR INSTANTLY REPAIRING EMERGENCY LEAKS. Gorilla Waterproof Patch & Seal Tape is the extra-strong adhesive tape designed to patch holes, cracks, gaps and tears. The rubberised, UV-resistant backing can be flexed and stretched to adapt to your surfaces. – forming a permanent waterproof, airtight* barrier. Great for: roofing, gutters, drainage pipes, tarpaulin, trailers, camping, pond liners and much more!.
eBay