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。
Self-aligning ball bearings of the mean diameter range are also available with seals (Figure 1.6) and a for-life grease fill.
平均直径变动的调心球承也可带密封（图1.6）和一个终身油脂填充。
According to Barnant, the pumps are self-priming, can operate dry without damage, are suitable for slurries and viscous liquids, and contain no valves or seals.
泵是自我启动式的，可以进行空转，并不带来任何的损耗，非常适合于泥浆和胶黏性液体，不带有阀门和密封。
An optimum seal is guaranteed by special profile seals and a self-tightening locking mechanism which is operable with one hand.
特殊截面的密封和单手操作的自锁紧机械装置确保密封的最优化。
It is posed that angular air-hammer self-excited vibration and half frequency wobble self-excited vibration are two reasons for resulting angular wobble self-excited vibration for gas film face seals.
提出造成气膜端面密封角向摆动自振的内在机理，既有半频摆动自振又有角向气锤自振。
It is posed that angular air-hammer self-excited vibration and half frequency wobble self-excited vibration are two reasons for resulting angular wobble self-excited vibration for gas film face seals.
提出造成气膜端面密封角向摆动自振的内在机理，既有半频摆动自振又有角向气锤自振。
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