The lid of my Supor pressure cooker suddenly doesn't cover tightly and I can't press it. What's the matter?

If the pressure cooker is not damaged by other things, there is no problem with the pot body, and there are only a few parts on the lid:

1, check whether the cover sealing ring is aging;

2, check which parts, such as exhaust valve, safety valve, etc. If they are loose, tighten them. If the screws are not tightened or leaked, it may be that the asbestos gasket on these accessories is broken, please replace it;

3. If nothing else works, it means that the tablet is easily broken and can be replaced.

You can solve it yourself. If it's not good, find a master in the repair department to repair it. Small faults are easy to repair.