Presto 09902 Pressure Cooker Sealing Ring with Air Vent and Safety Plug The sealing ring fits around the inside rim of the cover and forms a pressure-tight seal between the cover and the body of the pressure cooker during cooking. When installing a sealing ring, work it into the cover in four small sections, for example, top, bottom , left and right. Work it into the groove a small section at a time until it is fully in place. Place the cover on the cooker body. Put one hand on the top center of the cover and push down firmly. Open and close the cover several times. Fits Presto 6-Quart Pressure Cooker models: 01/PA6, 01/PA6H, 01/PCA6, 01/PE6, 0125001, 0125002, 0125004, 0125005, 0126101, 0126102, 0126104, 0126105, 02/PCA6, 02/PCA6H, 215101, 215102, 706, B601A, B602A, B604A, B605A, S-60, S-66, SC-35 Features Work it into the groove a small section at a time until it is fully in place Replaces Presto parts 50077, 33008 1379 Includes Automatic Air Vent Overpressure Plug The inside diameter of this sealing ring is 9.46 inches USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.