KBS Coatings 53000 Auto Fuel Tank Sealer Kit, Seals Up to 25 Gallon Tank The KBS Auto Fuel Tank Sealer Kit contains everything needed to seal a tank of up to 25 gallons. It is an All Inclusive Kit! This Kit Includes KBS Klean, RustBlast, Tank Sealer, Gloves and Complete Directions. The Tank Sealer Permanently seals pinholes &amp; weld seams and is Impervious to all fuels, alcohol additives and most solvents. This Kit eliminates all rust and corrosion meaning no clogged fuel filters. The Tank Sealer is flexible and able to expand and contract with your tank.