Versachem Muffler and Exhaust Repair Kit (00161) The Muffler and Exhaust Repair Kit comes complete with two reinforcement screens perfect for sealing holes, cracks and stopping leaks. Use it to repair mufflers, tailpipes and joints. Sets like a weld. Makes new installations more secure Resistant to monoxide gases and high temperatures. Saves the cost of expensive muffler system replacement. Works Best On : Muffler, Resonator, Tailpipe other exhaust system components The exhaust system should be cold before repair is started. For best adhesion, remove all grease, oil, paint, rust, dust etc Please note that ONCE CURED, the repair becomes very much like concrete and is extremely difficult to remove. Extended soaking in water for a long period of time will slowly soften it up Temperature Range : Up to 1000F (continuous) and 1500F (intermittent). Non-Flammable and Waterproof