Connection device for refrigerant conduits

The connecting arrangement (1) for coolant pipes (2) has a first (4) and second (6) connecting piece joined together by a single screw (11) offset to the side of the sealing faces (8,9). Positioned away from the screw and on the side (12) furthest from the sealing faces is a non-compressible preformed component (13) acting as a spacer, and constructed in such a way that when the connecting pieces are screwed together a lever action ensues which results in a uniform compression of a sealing ring (10) between the sealing faces of the connecting pieces.