J-B Water Weld Mastic époxy

WATERWELD will plug or seal practically anything that leaks. It will patch holes and cracks, and mend almost anything that is broken.;It is excellent for rebuilding or fabricating parts, and as an all-purpose adhesive for metals, wood, fiberglass, masonry, ceramics, PVC and ABS. Permanently repair holes, gouges, cuts ... even seals rot in fiberglass and wood.;Cures under water. Safe for use on lines carrying potable water.;No exaggeration: this is the best epoxy putty you can use.