J-B Weld WaterWeld Epoxy Putty Stick - 4 ozWaterWeld 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 potable water tanks; setup occurs even under water. After curing it can be drilled tapped filed sanded and painted. WaterWeld has a set time of 15 25 minutes and sets hard in one hour. WaterWeld cures to an off white color is rated at a strength of 4370 PSI and will withstand water