seal drive sleeve 动环传动套筒, 密封传动套 mechanical seal 机械密封 .
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... seal driving 动环传动销, 密封套拨杆 seal drive sleeve 动环传动套筒, 密封传动套 mechanical seal 机械密封 ...
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It is of built-in type, double seal face, multi-spring, unbalanced type and drive sleeve transmission.
内装式、双端面、多弹簧、非平衡型、传动套传动。
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模块上移
模块下移
不移动