Patent ID: 7338094

Claim:
A plug-in coupling for fluidic systems, in particular for CO 2 and fuel-conducting systems, comprising: a housing ( 1 ) and a plug ( 2 ), the plug ( 2 ) being insertable into the housing ( 1 ) by inserting a plug stem ( 3 ) of the plug ( 2 ) into a receiving opening ( 4 ) of the housing ( 1 ) so that at least one circumferential seal ( 5 , 5 a , 5 b ) provides a seal therebetween, the at least one circumferential seal ( 5 ) being configured with a set of seals fabricated from ring with two lips and a spring element embedded therein; a locking device locking the plug ( 2 ) in the housing ( 1 ) so as to be locked therein against release, the locking device including at least one latching element ( 7 ) arranged on the plug ( 2 ) and a latching shoulder ( 8 ) arranged on the housing ( 1 ) and interacting with the latching element ( 7 ); the housing ( 1 ) having a two-part construction to provide an inner housing part ( 1 a ) and an outer housing part ( 1 b ), the outer housing part ( 1 b ) being releasably connected to the inner housing part ( 1 a ) so that the outer housing part ( 1 b ) essentially surrounds the inner housing part ( 1 a ); and the latching shoulder ( 8 ) being provided in an entry region ( 4 a ) of the receiving opening ( 4 ) at one end of the outer housing part ( 1 b ).