FIELD: valving. ^ SUBSTANCE: inserted coupling comprises housing and ring-shaped sealing member that receives two O-rings interconnected in block by means of connecting section. The radial outer surfaces of the O-rings define sealing projections. The planes of the cross section of the O-rings are round. The cylindrical inner side of the sealing member passes tangentially to the outer round contours. The ring groove of the sealing member is mounted outside of the round outer contour of the first O-ring in the zone of the connecting section. The ring member and/or housing of the coupling has extension in the direction of the front end with guiding section and abuts against the sealing member. ^ EFFECT: reduced material consumption and enhanced reliability. ^ 6 dwg
