drive shaft grease seal retainer
主动轴润滑脂密封挡圈
The sealing effect can be enhanced by filling the seal cavities with grease.
如在密封空隙中充填滑脂，可提高密封效果。
Effect of Filling Grease Method and Filling Grease Amount on Seal Properties of Water Pump Bearings
注脂方法及注脂量对水泵轴承密封性能的影响
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