grease seal

常见例句

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。
The other advantage lies in that the lubricating grease in the seal housing will not flow out when the seal unit is worn, thus the service life is prolonged effectively.
本发明的另一优点在于其中密封装置磨损后，密封壳体中的润滑脂不会流出，从而有效地延长其使用寿命。
ip.com
If the grease piling up in seal cannot clear away automatically that it will result in reduction of lubricating effect, so you should guarantee the reliability of pressure oil device.
如果密封间的脂堆积不能自动清除，则会导致润滑效果下降，故应保证压力注油器的可靠。
jmby-pump.com