A gasket is a sealing material placed between connecting flanges to create a static seal within a pipe. This seal will ensure the pipe remains leak-proof in all operating conditions. Different types of gaskets are used to achieve varying leak-proof seals between pipe flanges. Regardless of type, the primary function of gaskets is to seal the irregularities of each face of a flange such that there will be no leakage of the service fluid from the flange joint. In piping, there are three types of gaskets used: non-metallic, metallic, and composite. In this blog, we will discuss all three in detail.