J-B Weld WaterWeld Epoxy Putty will plug or seal leaks and patch holes and cracks in almost anything. Ideal for repairing plumbing, fuel tanks, tub and shower, drains, pool and spa, boats and portable water tanks; setup occurs even under water. After curing, it can be drilled, tapped, filed, sanded and painted. Works on fibreglass, PVC plastic, copper, brass, iron and aluminium. Resistant to water, oil, gas, diesel, hydraulic fluids and most other chemicals. Specifications: Bonding Strength: 1, 300 PSI.Temperature Resistant: up to 148C (300F) .Set Time: 25 Minutes.Cure Time: 1 Hour.Colour When Dry: Off White.Size: 57g.