A system for establishment of a sealing connection between two axially impacting members (10, 11) in a pipe conduit, has an intermediate, elastically yielding metal sealing ring (59) arranged in a groove between the members. The sealing ring (59) is made of highly elastic rust-free steel and designed wedge-shaped. By prestressing the sealing ring between the members sealing engagement of the sealing ring is ensured. During use the sealing ring is adapted to be moved radially outwards in the associated groove and thereby compensates for tendencies to the opening of the gap between the members with the occurrence of high medium pressures in the pipe conduit. After cessation of the high pressures the sealing ring is adapted to occupy the starting position again.