| 摘要 |
A dual bushing rod seal housed in a balance chamber head. The balance chamber head has opening for receiving the rod. The first bushing a first section disposed between the rod and a counterbore in the balance chamber and a second section disposed between the rod and the inner wall of the balance chamber. The second bushing has a first section disposed between a second counterbore in the balance chamber head and the rod, and a second section disposed between the balance chamber head and the rod. A rod wiper is held against the rod by the second section of the second bushing. A rod seal is held against the rod by the first section of the first bushing. An O ring is disposed between the second section of the first bushing and the inner wall of the balance chamber.
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