Patent ID: 8375684

Claim:
An apparatus for closing containers, comprising a closing device which applies closures to the containers, wherein the closing device comprises a movable closing head for applying closures to the containers, which is arranged in the interior of a sterile chamber of the apparatus and is movable in a longitudinal direction (L) of the containers to be closed, and wherein at least one wall is provided which delimits the sterile chamber, wherein the closing device is arranged on a carrier which is arranged partially inside the sterile chamber and partially outside the sterile chamber and which is movable in the longitudinal direction (L) relative to the sterile chamber, wherein arranged in the interior of the sterile chamber is a first sealing element which is elastic in the longitudinal direction (L) and which seals off from the sterile chamber a region of the outer periphery of the carrier, wherein a volume which depends on a position of the carrier in the longitudinal direction (L) is formed between the first sealing element and the outer periphery of the carrier, which volume is in flow connection with a chamber arranged geometrically outside the sterile chamber, wherein the carrier is guided by a guide bushing, and a ventilation slit is provided in the guide bushing.