Description We manufactured the exhaust copper gaskets from thick, pliable copper with a raised compression ring to maintain improved sealing. This is your answer to leaking exhaust flange on just about any set of stock or custom cylinder heads. Copper exhaust gaskets are must when running fuel injection or a turbo. All copper exhaust gaskets have a crush-ring to help ensure a tight fit. More informations, please click the "PDF" download or contact with us.