Fast-cure adhesive. J-B kwik is a fast-set version of J-B weld that will set in 4 minutes and fully cure in 4 to 6 hours. Waterproof, petroleum, chemical and acid resistant when fully cured. Can be drilled, tapped, machined, filed, sanded and painted. Non-toxic and temperature resistant to 300°F. Suitable for use in household repairs, automotive, plumbing, marine, crafts and more.