These gaskets were designed from necessity. The only gaskets now available are so badly made they no longer create a reliable option for a sea fairing vessel. 

We have created a durable gasket made from copper and pressed in our own tooling to create a perfect seal first time. We are confident that the gasket will line up perfectly as we measured in house a good head casting with our Renishaw probing system and have tested these gaskets under extreme duty.