Mirro Pressure Cooker Model “M-0644”. Parts List for Mirro Matic “M 0644” Pressure Cooker. Mirro® parts for the Mirro® model “M-0644” may be ordered on-line using the links below. Mirro 9885 Gasket 9885$11.99 Mirro 9898 Pressure Regulator 9898$17.95 Mirro 9894 Vent Tube 9894$9.95 Mirro 9732 Fuse Over Pressure Plug 9732Regular price: $2.99Sale price: $2.00 6 3/4 in. dia Canning Rack 341$7.49