🚀 Seal It Like a Pro! Effectively seals holes and leaks in mufflers and tailpipes. Easy application with a waterproof, non-shrinking paste formula. Withstands extreme temperatures up to 2000°F (1000°C). Designed to resist shock and vibration for lasting repairs. Perfect for mufflers, tailpipes, joints, and catalytic converters. Waterproof Formula 2000°F Temp Range Compact & Easy Use The Permatex 80335 Muffler and Tailpipe Sealer is a high-performance, waterproof paste designed to seal holes and leaks in exhaust systems. With a temperature resistance of up to 2000°F, this compact 3 oz. solution is perfect for ensuring secure installations and long-lasting repairs on mufflers, tailpipes, and joints.