Closing Unit

A closing unit for closing a throughflow opening provided in a wall of a container, particularly a beverage container such as a can, the closing unit comprising:

• an inner closing element which is configured to be mounted on an edge of the wall all around the throughflow opening provided therein, wherein the inner closing element is further configured to connect in mounted position against at least an inner side of the wall and is provided with a passage for content of the container;
• an outer closing element which is configured to be coupled releasably to the inner closing element for closing the passage provided therein;
• wherein both the inner closing element and the outer closing element comprise a screw thread coupling for screwing the outer closing element onto a lower closing element;
• wherein the outer closing element comprises a peripheral press-on edge which is embodied to clamp the outer closing element against an outer side of the wall of the container when screwing.