将再循环风扇的接耳放置在正确位置，安装垫片、螺钉、螺帽。

Put the recirculation fan lugs in position and install the washers, the bolts, the washers and the nuts.

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在拧管道接头螺丝时，应遵循对角互拧的原则，不要逐个顺序进行操作，不要一次性将螺丝拧死，这样才能将橡胶垫片正确地安装上去。

When the pipe joint screw, should follow the principle of diagonal twist, not one by one in order to operate, do not screw the screw die, so that the correct installation of rubber gasket.

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在人造纤维行业，各滤网都要安装与其轮廓相吻合的垫片和密封圈。

Along with screen packs, the synthetic fiber industry utilizes gaskets and seals with each pack configuration.

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