What you got:2* 09907 (1075) Pressure Cooker Sealing Ring with 2* Automatic Air Vent (outer diameter 13.5inch, inner diameter 12.8inch).
Model Compatible Model 21, 21AV, 21B, 21S, 7, 7AV, 7B, 7S, CA16, CA16H, CA21, CA21H Pressure Cooker. Presto 9911 Automatic Air Vent Replaces parts 82060, 393 & 82058
Function 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 canner during canning and cooking.
Presto Pressure Canner Cooker Gasket Seal Ring 9907 Fit CA16, CA16H & 21 Qt
Tips for Purchase Not fit for pressure cookers or canners manufactured since 1977 which contain a combination air vent/cover lock.
Important Tips Not for use with pressure cookers or canners manufactured since 1977 which contain a combination air vent/cover lock.