Abstract: A seaming shaft device for a sealer includes a seaming shaft, a seaming device detachable from the seaming shaft, and a fastening mechanism for fastening the seaming device to the seaming shaft. The fastening mechanism includes a lock and a fastener which can be arranged between the lock and the seaming device. The lock and the seaming device can be moved relative to each other along the seaming axis so that the seaming device can be brought from a locked state to an unlocked state, and the fastener in the locked stat is clamped between the seaming device and the lock such that the seaming device is fixed to the seaming shaft. The fastener can be unclamped by bringing the seaming device from the locked state to the unlocked state so that the seaming device is detachable from the seaming shaft.

Abstract: A gassing device for gassing a container includes a rotatable gassing rotor with a container receptacle for receiving the container and a feeding area for feeding a gas via a feed opening. The container receptacle includes a gassing nozzle flow-connected to the feed opening via a channel for gassing the container, and a stationary gas supply with a stationary supply opening arranged on the feeding area such that the supply opening can be flow-connected to the feed opening. The gassing rotor can be supplied with the gas from the gas supply in the operating state by moving the feed opening to the stationary supply opening by rotating the gassing rotor. The feeding area is connected without contact to the gas supply in the form of a labyrinth seal, so that the gassing rotor is rotatable relative to the gas supply in the operating state.