| 摘要 |
An intershaft seal is provided for inner 57 and outer coaxial shafts 58 which rotate relative to each other. The seal is located in an annular space between the shafts and maintains an axial fluid pressure differential between a first side 51 of the seal and a second side 52 of the seal. The seal includes first and second runners (53, 54) which project into the annular space from a first one of the shafts and extend circumferentially around the first shaft such that a cavity is formed between the runners. The seal further includes a sealing ring 55 which is coaxial with the shafts and is located in the cavity. The sealing ring makes sealing contact with the second of the shafts to maintain the pressure differential. One of the runners is spring-loaded such that it is urged towards the sealing ring. |
