What does a flange gasket look like?

A flange gasket is typically a flat, circular or rectangular piece made from materials such as rubber, cork, or metal. It features a central hole that aligns with the flange bolts and may have various surface textures to enhance sealing. The gasket is designed to fit precisely between two flanges to prevent leakage of fluids or gases in piping or machinery connections. Its appearance can vary based on its application and the materials used, but it generally has a smooth outer edge.