| 摘要 |
The device has a body (1) with a conical opening (1b) and an external threading (1a). A ring (8) is housed in a recess (6) of a nut (4) whose front side is turned towards a threading, and is equipped with a sealing device (9). A rear side of the nut turned towards a conical connection surface (7) of a passage orifice (5) defines with the surface, a radial expansion housing for an elastic split rod (10).
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