Pressure Cooker Gaskets also known as a sealing ring, is a vital component of a pressure cooker. It is a rubber or silicone ring that fits snugly around the inside rim of the pressure cooker lid, creating an airtight seal between the lid and the pot. The pressure cooker gasket serves two primary functions. First, it prevents steam from escaping during the cooking process, which allows the pressure inside the cooker to build up and cook food faster. Second, it prevents food and liquid from spilling out of the pressure cooker while it is in use.