Presto 09936 Pressure Cooker Sealing Ring/Overpressure Plug Pack The product is pressure cooker sealing ring with automatic air-vent Easy and simple use kit The product is manufactured in china Includes overpressure plug Replaces Presto parts 09904 and 50295 Forms a pressure-tight seal between the cover and the body of the Presto pressure cooker See a full list of Presto pressure cooker models this replacement part fits below