Water activated tape (pipe repair tape) Dip in water and ready for repair.
Anti Leak Repair Tape, Air Conditioning Duct Tape, 5 Oil Resistant Pipe Protectors 6cm Wide For Electrical Equipment And Supplies, Cables[gray] | Fruugo NZ
ATack Waterproof Patch and Seal Tape, White, 4 Inches x 10 Feet, Water Barrier Tape for Stop Leak Repair on Pipes, Chimney, Roof, Boat, and HVAC: Amazon.com: Industrial & Scientific
Armored Cast Emergency Gas and Water Pipe Leak Crack Repair Bandage Water Activated Fiberglass Tape - China Water Activated Fiberglass Tape, Pipe Leak Repair Bandage | Made-in-China.com