The straight threads of the nut engage with the mating threads of the valve outlet and are tightened to compress the gasket between the two sealing surfaces.

螺母的直螺纹同阀门排气口的配合螺纹咬合在一起并上紧，来压缩在两个密封表面之间的衬垫。

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Install the sealing washer, flat washer and nut as described in the Floor.

如同在底板固定一节里所记述的那样，安装密封垫圈，平面垫圈及螺。

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The leakage plugging stopple with a hollow expansion bolt used for the support structure of the deep foundation pit comprises an expanding pipe, a hollow bolt, a nut, a sealing rubber mat and a cork;

该深基坑支护结构漏水空心膨胀螺栓封堵塞 包括胀管、空心螺栓、螺母、密封胶垫和软木塞，空心螺栓套在胀管内且其长 度大于胀管长度；

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