This is NOT a universal part, ONLY compatible with model and part numbers listed in description and does NOT fit other models of pressure cookers Compatible with Presto pressure cooker models 01/PCC4, 01/PCC4A, 01/PCC4D, 01/PCC4H, 01/PCD4, 01/PCD4H, 01/PCE4, 01/PCE4A, 01/PCE4H, 103, 104, 204, 40 (2.5qt), 40 (4 qt), 403, 404 Compatible with Presto pressure cooker models A401A, A403A, A403AD, A403AT, A409, A410A, A411A, A412A, A413A, A414A, A415A, A416A, KE02A, KE02AT, PB01A, PB05A, PB07A Compatible with Presto gasket seal ring part numbers 9909 1071 Quality part by Univen Univen pressure cooker gasket seal and automatic air vent. Compatible only with Presto pressure cooker models 01/PCC4, 01/PCC4A, 01/PCC4D, 01/PCC4H, 01/PCD4, 01/PCD4H, 01/PCE4, 01/PCE4A, 01/PCE4H, 103, 104, 204, 40 (2.5qt), 40 (4 qt), 403, 404, A401A, A403A, A403AD, A403AT, A409, A410A, A411A, A412A, A413A, A414A, A415A, A416A, KE02A, KE02AT, PB01A, PB05A and PB07A. Compatible with Presto gasket seal ring part numbers 9909 and 1071. Includes PR-9911 air vent plug. This is NOT a universal part, ONLY compatible with model and part numbers listed in description. Does NOT fit other models of pressure cookers. Quality part by Univen.