The Permatex Fuel Tank Repair Epoxy Stick is designed to help users fix both metal gas tanks and containers quickly and easily. This industrial-strength epoxy is resistant to most solvents and features an ethanol-resistant formula. Meant for filling holes and damaged seams, Permatex Fuel Tank Repair Epoxy Stick comes as a two-part putty in a convenient stick form. The finished repair sets in just one hour and can be drilled, sanded, threaded or filed after five hours, according to the company.