Valve plug

A valve plug for sealing off a container opening comprising:

• a valve body which can be fitted on the container opening and is composed of a first, rigid plastics material, and having a valve element which is integrally connected to the valve body and is composed of a second, elastic plastics material which is more elastic than the first plastics material, with the valve element having a sealing surface section, which can be fitted in a leak-tight manner on a bearing edge, and a connecting part which extends from the sealing surface section radially through an opening in the valve body to a holding section which is held on an outer periphery of the valve body, with the sealing surface section being held by the connecting part without axial support of the sealing surface section, and the sealing surface section having an increasing material thickness starting from the connecting part toward an edge of the sealing surface section opposite the connecting part.

A valve plug for sealing off a container opening comprising:

• a valve body which can be fitted on the container opening and is composed of a first, rigid plastics material, and having a valve element which is integrally connected to the valve body and is composed of a second, elastic plastics material which is more elastic than the first plastics material, with the valve element having a sealing surface section, which can be fitted in a leak-tight manner on a bearing edge, and a connecting part which extends from the sealing surface section radially through an opening in the valve body to a holding section which is held on an outer periphery of the valve body, with the sealing surface section being held by the connecting part without axial support of the sealing surface section, the valve body defining an aperture for receiving a plug part, the sealing surface section extends from the connecting part to annularly couple to an inner wall of the valve body, overlapping the entirety of the aperture to form a leak-tight seal.