Flat Face Blind Flanges are type of flanges that are designed to be used in piping systems where the end of the pipe needs to be blocked off. They are usually made from carbon steel, stainless steel or cast iron materials and are typically used in high pressure and high temperature applications. The flat face of the flange ensures that there is a smooth surface for the gasket to sit on, which in turn helps to create a seal between the flange and the piping system.