Patent ID: 7686345

Claim:
A coupling comprising a molded sealing ring for producing liquid-tight or gas-tight connections, said coupling having a socket ( 20 ) and a plug ( 1 ) capable of being axially plugged into each other, and said molded sealing ring is implemented as a tip seal ( 6 ) disposed in a circumferential groove ( 5 ) of the plug ( 1 ), wherein a pumping space ( 15 ) that develops on the bottom of the groove ( 5 ) during pulsating stresses on the coupling is structured such that it is capable of being ventilated/vented; wherein a ventilation/venting means of the pumping space is implemented by an air-conducting connection between the pumping space ( 15 ) and an ambient space ( 10 ), wherein the air-conducting connection is implemented by a plurality of venting grooves ( 18 ) disposed and distributed along the circumference of the lip seal ( 6 ), wherein the lip seal ( 6 ) comprises two axial extending legs ( 7 , 8 ) and a connecting radial extending base leg ( 17 ) between the two axial legs ( 7 , 8 ), which incorporates venting groove ( 18 ) facing in the radial direction, wherein the venting grooves ( 18 ) interrupt the sealing adherence of a base leg ( 17 ) in the region of groove flank ( 11 ) of the plug groove ( 5 ) and permit the continuous air-conducting connection of the pumping chamber ( 15 ) in the direction toward the ambient space ( 10 ), wherein the pumping chamber ( 15 ) is defined between the lip seal ( 6 ) and the groove ( 5 ) of the plug ( 1 ) and the venting grooves ( 18 ) are distributed along an outer circumference of the base leg ( 17 ), which faces away from both axial legs ( 7 , 8 ).