IMPROVEMENTS IN OR RELATING TO SEALING
A packaging machine has a sterile chamber, a first, lip seal (46) arranged to prevent debris build-up at an access panel (24, 26) used by an operator for accessing the chamber, a second seal (58) arranged to prevent debris build-up between two face-to-face surfaces in the chamber, and a third seal (82) arranged to prevent debris build-up between a shaft and a through hole located inside the chamber.