Presto 09918 Pressure Cooker / Canner Gasket; Sealing Ring & Auto Air Vent Pack Presto 09918 Pressure Cooker / Canner Sealing Ringwith Auto Air VentThe 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 canner during canning and cooking.Fits models:703733B301AB301B704744B401AB401B 6255038