self lubricating bearings 含油轴承 ; 自润轴承
gradient self-lubricating bearings 梯度自润滑轴承
All the valve's internal self-lubricating bearings are sliding bearings, the whole material the use of carbon steel PTFE liner.
所有阀门的内部轴承均采用自润滑式滑动轴承，材质采用碳钢全衬聚四氟乙烯。
SF-1 carbon steel self-lubricating bearings used high quality low-carbon steel plate as base, sintered porous bronze as its interlayer and the Compound of PTFE and Lead as its surface.
该产品以优质低碳钢为基体，中间烧结球形青铜层，表面轧制聚四氟乙烯和铅的混合物。
Bearings: Self lubricating, built in wiper seals, Frelon teflon coated available.
轴承：自润滑，密封在雨刮，黄蜂聚四氟乙烯涂层可建成。
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