Abstract: The invention relates to an apparatus for producing a can packaging blank by backward extrusion. The apparatus has a die wall and an extrusion punch, wherein the die has a die base and a die wall having a die wall height HG. The die wall has, in the region thereof adjacent to the die base, at least one protrusion having predetermined width (B), predetermined height (H), predetermined depth (T) and predetermined cross-section, wherein the height (H) of the protrusion equals 95% of the die wall height (HG) at maximum.

Abstract: The invention relates to a container for sterilely packaging objects under reduced pressure, said container comprising a lower part and an upper part. The container has an annular sealing element having a main sealing-element plane DH, the sealing element being H-shaped in cross-section perpendicular to the main sealing-element plane, with two flanges and a web. An entire lower edge of the upper part and an entire upper edge of the lower part can be slid between the flanges of the sealing element. The sealing element is designed to tightly close the container, the flange of the sealing element arranged on the outside of the container when the container is assembled being equipped with at least one predetermined rupture feature for destroying the tight closure of the container.