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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。
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。
The metal-plastic composite nut, according to Claim 1 and 2, is characterized in that the inner surface at one end of metal insert is cone-shaped sealing surface.
根据权利要求1或2所述的金属塑料复合螺帽，其特征在于所述金属嵌件一端部的内表面为锥形的密封面。
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