Abstract: A process and device for the cleaning of closing heads in a device for closing vessels with crown caps, the closing head having a die guided in a guide bore for pressing a crown cap against the opening of a vessel to be closed, the die being movable relative to the closing head against the force of a spring disposed in an inner space of the closing head and a gap space being provided between the die and the wall of the guide bore. A flushing agent can then be guided through a flow opening connected with the inner space, so that the agent flows through the inner space with the spring means and the gap space between the die and the wall of the guide bore, whereby a complete cleaning of all parts of the closing head is achieved.