| 摘要 |
A threaded joint (1) comprises a first seal ring (30) having a tapered shape in a cross section on an axial plane, this ring having an L-shaped metal reinforcement ring (34) embedded in it, and/a second seal ring (6) positioned more internal to the first seal ring (30) and located in a housing (18) between the end of a threaded section (5) and the nose (15) of the box. The second seal ring (6) has a first base, a second base axially opposite to the first base, and protruding annular ribs either on the external surface or on an internal surface.
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