| 摘要 |
PROBLEM TO BE SOLVED: To provide a pipe joint having a high degree of freedom for selecting a material, and capable of preventing leakage of a fluid caused by loosening of a cap nut or the like. SOLUTION: This pipe joint 1 has a pipe joint main body 2 formed with a male screw part 21 in one part of its outer circumference, and having a circumferential groove 24 in the vicinity of an end part in an axial deep side, the cap nut 3 having a female part 31 screwed in the male screw part 21, and a ring member 5 supported by the circumferential groove 24, and the cap nut 3 has a tapered face (the first guide face) 32 contacting with an outer circumferential face of the ring member 5 when screwed in the joint main body 2, and a linear cylindrical face (the second guide face) 33 for pressing the ring member 5 radially. COPYRIGHT: (C)2008,JPO&INPIT
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