KBS Coatings 52000 Sealer Kit-5 Gallon Tank The KBS Cycle Tank Sealer Kit contains everything needed to seal a tank of up to 5 gallons. Includes KBS Klean, RustBlast and Tank Sealer Permanently seals pinholes & weld seams Once cured, Impervious to all modern day fuels, alcohol additives & most solvents