If the wall is not dry, dust is not clean, the release of water vapor from the wall and seal failure.

若墙体未枯燥、尘埃未铲除洁净，墙体释放出的水蒸气及会使密封失效。

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In this article, the seal failure of optical glass was analyzed, and the improving method was introduced.

介绍了吸收塔上视镜密封失效的原因分析及改进措施。

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Because of the RCP be in primary circuit pressure boundary, LOCA accidents that may occur due to the seal failure.

主泵为核电厂一回路压力边界，可能由于密封失效发生LOCA事故。

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Most of the technical issues covered in the report, such as the failure of a crucial cement seal and the misinterpretation of a key pressure test, have been raised by other investigations.

WSJ: Gulf Disaster Tied to BP's Lack of 'Operating Discipline'