Lextek Exhaust Paste is a high-quality sealant that will cope with temperatures up to 1100 degrees Celsius. The Lextek Exhaust Paste is ideal for sealing joints between two pipes, we do not recommend you use it as a replacement for a gasket (for example between the head and manifold). The Lextek Exhaust Paste will provide you with a leak-free seal ensuring your exhaust system performs exactly as it is designed to.