Abstract: A mouthpiece for a setting device setting a blind rivet element is disclosed which comprises a hollow, which may be a hollow-cylindrical, body having an abutting end and a central through bore through which a pulling mandrel of the setting device is movable. Further, a first endless sealing is arranged adjacent to the central through bore at the abutting end for abutting at a head portion of the blind rivet element. Additionally, a second endless sealing is arranged radially outwardly of the first endless sealing at the abutting end for abutting at a component. Finally, a fluid channel extends at least partly through the hollow, which may be a hollow-cylindrical, body such that an exit opening is provided between the first and the second endless sealing and an entry opening for supplying a testing fluid is provided, which may be remote to the abutting end.

Abstract: A blind rivet insert having a head forming an annular flange and a shank extending from an underside of the head, and having a head end, a foot end and a bore extending from the head end to the foot end. The insert has a first bore segment near the foot end, provided with an internal thread, and a second bore segment near the head end whose diameter is greater than that of the first bore segment. The underside of the head includes an annular groove adapted for receiving a sealing ring in a mounted condition of the blind rivet insert. An annular retaining shank groove extends circumferentially around the shank, is arranged adjacent to the underside of the head, and retains the sealing ring in a preloaded position before mounting the blind rivet insert.

Abstract: A blind rivet insert having a head forming an annular flange and a shank extending from an underside of the head, and having a head end, a foot end and a bore extending from the head end to the foot end. The insert has a first bore segment near the foot end, provided with an internal thread, and a second bore segment near the head end whose diameter is greater than that of the first bore segment. The underside of the head includes an annular groove adapted for receiving a sealing ring in a mounted condition of the blind rivet insert. An annular retaining shank groove extends circumferentially around the shank, is arranged adjacent to the underside of the head, and retains the sealing ring in a preloaded position before mounting the blind rivet insert.