National Pressure Cooker Co. National Pressure Canner Cooker Model number 5 Parts. Parts also fit Guardian Service Ware Pressure Cooker 12 quart and Steamliner Model A-12 pressure cooker 12 quart. (holds 5 quart jars) National Model 5 Sealing ring opn5$15.99 Presto 9911 Over pressure/Automatic Air Vent 09911Regular price: $3.99Sale price: $2.00 82087 Steam Gauge 82087$19.98 Presto 85485 Pressure Canner Regulator Kit 85485$16.99 85444 Cover Handle 85444$8.49 85443 Body Handle 85443$8.49 Presto Pressure Cooker Cooking Rack 85622 85622$9.49