The Tomy MX Centrifuge has Tears or Holes in the Motor Boot.
The motor boot will have to be replaced.
The MX Centrifuge Chamber lid Gasket is Damaged or Deformed.
It is recommended to replace the deformed lid gasket.
The Chamber lid Cannot be Opened After Sterilization Using the ES Tomy Autoclave
This article provides some potential physical damage/complications that could prevent the lid from opening.