Fast setting hand moldable putty epoxy designed for plumbing repairs, work time is 3 minutes. Cures wet or dry. Repair leaking pipes, fiberglass, metals, PVC, and just about any surface. NSF rated safe for potable water contact. Fill abandoned drill holes in ductwork, insulate electrical connections from water, fix freeze damaged PVC and copper pipes, stop leaks in copper elbows and tees.