Steel Seal, with it’s 99% success rate, will permanently seal your blown gasket or cracked head, or receive a full refund under our money back guarantee. Steel Seal head gasket sealer is an award winning formula that is triple-patented in the U.S.A. Steal Seal head gasket repair is a green transparent liquid formula that permanently seals a crack in you head gasket. Steel Seal Head Gasket Sealer permanetly repairs blown head gasket leaks, cracked heads, heater cores and freeze plugs. Easy to use for the Do-It-Yourself repair. Single repair for all 6 cylinder engines. Permanently seals head gasket leaks Do-It-Yourself pour in head gasket fix Award winning, triple-patented formula Used for all 6 cylinder engines