| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealing structure for exhibiting stable sealing performance, while lengthening the service life, without generating a particle, and without causing a twist. SOLUTION: A seal recessed groove 4 has a deep groove part 7 having a seal falling-off suppressing projection piece 5, and a shallow groove part 8 having a flat groove bottom surface part 9. A seal member S also has an installation base part 15 fitted in the deep groove part 7, and a thin tongue piece part 16 fitted in the shallow groove part 8. COPYRIGHT: (C)2009,JPO&INPIT
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