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1·Low pressure seal test 4.4.1 for low pressure seal test, the sealing surface should be kept clean, no oil, no grease and seal fat, for to prevent scratches.

低压密封试验4.4.1进行低压密封试验时，低温阀门密封面应保持干净，无油、无油脂和密封脂，如需防止擦伤。

2·Standard versions feature a nitrile double-lip seal and standard grease.

标准版本采用腈双密封唇和标准油脂。

3·High-temperature models have a fluororubber seal and high-temperature grease, for extreme conditions where lower speeds are required.

高温模式有氟橡胶密封和高温润滑脂，在极端条件下较低速度是必需的。

4·A rolling bearing and a seal for the rolling bearing. In the rolling bearing, efficacy of an adjunct agent for grease is maintained for a long period of time to extend the life of the bearing.

本发明提供一种能够长时间维持润滑脂用的辅助剂的功能并实现寿命的提高的滚动轴承及滚动轴承用密封部件。

5·The grease should be laid on the periphery of seal ring, the inner of ladder-shaped screw thread and chuck ring oil channel during installation.

安装时应将橡胶密封圈四周，梯形螺纹内，压环油槽内，中心管外径上涂黄油。