Are you tired of replacing the seal on your 16Q or 23Q Presto Pressure cooker? Our extended life 100% Silicone gaskets are made to last 5X longer than the OEM gasket. Even after 100 cooks it will still perform like new! If you have been using a Presto cooker for years you will truly appreciate the difference this gasket makes! Replacement for Presto Parts 09985. Our pressure canner gaskets are made from high-quality, durable, food-grade silicone. 09985 Pressure Canner Sealing Ring Fit Model:Fits Presto Pressure Canner models: 0174510 16 qt, 0175510 16 qt, 0178107 23 qt, 0178209 23 qt, 0178410 23 qt. Please Measure your gasket. The interior diameter of the gasket is 12.25"