Pressure Cooker Parts Search for Model or Part Number Search for: PRESTO Presto® Pressure Cooker Parts may be ordered on-line Find your Presto Pressure Cooker/Canner Model Number If you have a newer model. You can usually find the model number on the bottom of the pressure cooker OR ON THE pressure cooker BODY. Under the handle. A sticker on the handle Newer models start with 01/ or 02/ followed by letters like PC or PA and more letters and/or numbers. The most recent styles always have seven digits (all numerical) model numbers starting with 01 or 02 (Example: 0136304). Older models, the number can probably be found on a label attached to the top of the cover. Old units have model numbers like 5,7B, 40, 50, 204, 606, etc. Model 7-B Model 404 The PRESTO Sealing Ring I ordered is Too BIG ? Please Note - All Presto Pressure Cookers have the number 409A stamped on the bottom of the cooker, this is not the model number. It is a number used to indicate the product's listing by Underwriters Laboratories Back to Presto Parts ----------------------------------------------------------- MIRRO Mirro Pressure Cooker/Canner Model Numbers. Model numbers are found on the bottom of the pressure cooker/canner. Model M-0512 Back to Mirro Parts The PRESTO Sealing Ring I ordered is Too BIG ? Need Help? 800 851 3266 admin@cookingandcanning.net Your pressure canner parts specialist.