Different manufacturers can have the exact same part number. A great way to check that the part matches your appliance is by ensuring your measurements are the same as ours! Please contact us if you need help.
Seal ring
1/4" thick
****for cookers made before 1983****, if your cooker was made after 1983 please use gasket mi-9882..gaskets may need to be soaked several times in water before they can be used to make sure they expand properly.
You can tell the age of your mirro by looking on the bottom - there should be a fraction such as a 3 on top and an 81 on the bottom. that means it was made in march of 1981. that will help you determine which gasket to buy.
MI-3440, opc3440, 3440, MI3440, S-3440, S3440
4.7