The dimension accuracy of the sealing slot is closely related to the life time, reset accuracy of the oil cylinder piston and braking sensitivity.

制动钳体锥体密封沟槽的尺寸精度影响着油缸密封圈的使用寿命，油缸活塞的复位精度及整个制动器的制动灵敏程度等；

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Again the old car you can choose appropriate viscosity of older oil to increase the sealing performance of the piston and cylinder wall between.

再次老旧车可以适当选用黏度稍大点的机油来增加活塞、缸壁间的密封性。

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This kind of air compressor cylinder basically does not include any oil content in, the piston ring and packing is commonly ptfe.

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。

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