| 摘要 |
A rotation shaft seal in which a plate-shaped supporting piece (5), supporting a seal element (3) from a low-pressure side (6), has an axis-orthogonal wall portion (10), a sloped wall portion (12), and an inner peripheral end flat wall portion (13) at right angles with an axis (L 2 ) in cross section cut at a plane including the axis (L 2 ) of the rotation shaft (2).
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