| 摘要 |
A division type mechanical seal with which assembling precision on divided contact faces are improved, workability at the time of temporary assembling is refined, and no excessive precision is required in mechanical processing at the time of manufacturing is provided. The mechanical seal includes a through hole portion 50 formed over two divided sealing rings so as to go over divided contact faces 12a, 13a of the two divided sealing rings 12, 13 adjacent to each other in the circumferential direction, and a coupling tool 54 inserted into the through hole portion 50 to couple the two adjacent divided sealing rings 12, 13. The coupling tool 54 includes a bolt 55, a nut 56, and a tube 57 fitted to a shaft portion 55a of the bolt, and the tube 57 is compressed in the axial direction and expanded in the outer diameter direction when the two adjacent divided sealing rings 12, 13 are coupled by fastening the nut 56. |
