| 摘要 |
A Brush Seal element 10 has a backing plate 11 designed to project into a gap 12 between a fixed sleeve 13 and a shaft 14 and a bristle array 15 comprising a pack of bristle layers which is held in the sleeve 13 by support 16. The bristle 15 and non-linear portion 17, 18, which define cavities 19 and 20 between the array 15 and the plate 10. These cavities can become filled with high pressure fluid so that there is a substantial pressure balance across the array 15.
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