There was a new ringed structure on the driven pan to push back the oil and we also used single framework with one O ring instead of double framework to seal the oil.

在提前器从动盘上设计了一个挡油环形结构，并将原来的双骨架密封结构改为单骨架结构加O型圈密封结构。

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A double flexible metallic O-Ring seat provides a (1) static and (2) dynamic seal and assures compliance to fire-safe specifications.

双重柔性金属O形环阀座具有静止和动态密封性能，确保符合防火规则要求。

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Furthermore, the double seal of the fuse is formed in common by the 'o' shaped sealing ring and an adhesives layer filled between the metal cap and the fuse tube.

此外，“O”型密封圈以及金属帽与熔管之间填设有粘合剂层共同形成了熔断器的双重密封。

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