GOOPAPRO Epoxy Putty will PLUG or SEAL practically anything that leaks, it will PATCH holes and cracks. MEND almost anything that is broken. It is excellent for REBUILDING or FABRICATING PARTS and as an all purpose ADHESIVE for metals, wood, glass, masonry, ceramics and many plastics. Also, it can be drilled, tapped, tiled, sanded and painted like metal. Set steel-hard in 20 minutes. Hints for Use l Epoxy Putty adheres to most surfaces. Best results will achieve if area is first roughened by sanding or filling to clean and prepare surface. l Starts to harden 2 minutes after mixing. Repair should be in place before hardening starts. l A smooth finish can be obtained by rubbing with wet finger or damp cloth before hardening begins. l Epoxy Putty can be drilled, tiled, tapped, sanded and machined after one hour of curing (hardening). l Can be painted immediately, even before full hardening. l Epoxy Putty can be used under water. Mix as usual and use the polyethylene wrapper, so material will not stick to hands as the Epoxy Putty is being forced onto the wet surface. l Not recommended for use on polyethylene and polypropylene. Wash hands thoroughly with soap and water after using Epoxy Putty.