这种空压机气缸中基本上不含油，其活塞环和填料一般为聚四氟乙烯。
This kind of air compressor cylinder basically does not include any oil content in, the piston ring and packing is commonly ptfe.
这种压缩机气缸中基本上不含油，其活塞环和填料一般为聚四氟乙烯。
Basically, this compressor is not in the oil cylinder, the piston ring and packing usually PTFE.
检查活塞环以及填料函圈的滑动面。
Check the slide faces of the piston rings and stuffing box rings.
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