Offering resistance to ethanol and most solvents, Permatex Fuel Tank Repair Epoxy Stick is suited for filling holes and damaged seams in both metal gas tanks and containers. Product comes as 2-part putty in stick form which helps measure and mix proper amount. Finished repair sets in just 1 hour and can be drilled, sanded, threaded, or filed after 5 hours. When fully cured, epoxy withstands moderate temperatures and does not shrink after application.