Versachem 90215 Tank Repair Kit - 1 oz. Permanently repairs gasoline and diesel fuel tank leaks Repairs leaks in less than 20 minutes; no draining or welding required Chemical solvent resistance to gasoline, diesel and kerosene Temperature Range: 40F to 200F Suggested Applications: Repair pinholes, rust-outs, hairline cracks and holes up to 1/2" in diameter