packing seal for reciprocating shaft
... multiple lip reciprocating rubber seal 多唇往复橡胶密封 reciprocating rigid-type seal 往复刚性密封 packing seal for reciprocating shaft 往复轴填料密封 ...
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packing seal for reciprocating shaft
往复轴的填料密封
以上为机器翻译结果，长、整句建议使用 人工翻译 。