Plug holes and make permanent repairs underwater or on leaking gas tanks. J-B Welds WaterWeld is drinking-water safe and will plug or seal practically anything that leaks. Surfaces dont need to be clean or dry for this adhesive. Excellent for rebuilding or fabricating parts and as an all-purpose adhesive for metals, wood, fiberglass, masonry, ceramics, PVC, and ABS. Works on wet or dry surfaces. Hard as steel in 20 minutes. This is the best bondingagent you can use period. Size: 2 oz. Cancer and Reproductive Harm- www.P65Warnings.ca.gov.