Plug-type coupling with a molded sealing ring and venting means

The present invention relates to a plug connector having a molded sealing ring, or to establish fluid communication with a gas seal, wherein the plug connector having a plug and a takeover, they are inserted into each other in the axial direction, forming a seal disposed in the form plug seal lip surrounding the slot. Object of the present invention is to improve such a plug connector having a sealing ring forming the front, so that the pump action can be overcome, and therefore the plug connector can be avoided by a vacuum load pulse at the groove bottom.