| 摘要 |
PROBLEM TO BE SOLVED: To improve the assembling performance of a seal member, and to secure a fastening margin which is uniform at the entire periphery of a seal part while avoiding erroneous assembling, in a passage forming member with the seal member in which a coupling flange part is integrally formed at an end of the passage forming member, an attachment groove endlessly surrounding an opening end of a passage to a mating face is formed at the mating face of the flange part, and an endless seal part of the seal member is attached to the attachment groove.SOLUTION: A seal member 12 is formed while integrally having a seal part 12a, ear parts 12b protruding sideways from a plurality of points with intervals in the circumferential direction of the seal part, and a protrusion 12c protruding from the ear parts 12b in a direction orthogonal to a mating face 10. At the mating face 10, there are formed a recess 21 continuous to an attachment groove 19 so as to accommodate the ear parts 12b, and a pressure-insertion hole 22 opened to the recess 21 so as to pressure-insert the protrusion 12c therein, and at a side face of the protrusion 12c, there is formed a notched groove 27 extending along the pressure-insertion direction to the pressure-insertion hole 22 over the entire length of the protrusion 12c. |
