| 摘要 |
A seal ( 40 ) provides sealing between two pressure zones ( 60, 62 ) and a rotating and non-rotating member ( 42, 52 ) by providing a first sealing member ( 46 ) between two seal lands ( 48, 50 ). A second seal ( 64 ) is mounted between the non-rotating member ( 52, 58 ) and one of the seal lands ( 50, 66 ) so as to control pressure around the seal lands ( 48, 50 ).
|
