Sure to rotate the pump shaft when pouring lubricating grease, in order that the grease can get into packing cavity fully until have grease oozed out from gland.
注入润滑脂时必须旋转泵轴，以使其充分进入填料腔，直到填料压盖端有油脂渗出为止。
The use of O-ring NBR seals should be based on the property of lubricating greases in order to increase the reliability of products.
在实际使用中，应科学地选用与橡胶密封圈相宜的润滑脂，从而保证产品使用的可靠性。
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