grease seal

基本解释

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.
低壓密封試騐4.4.1 進行低壓密封試騐時，低溫閥門密封麪應保持乾淨，無油、無油脂和密封脂，如需防止擦傷。
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.
本發明的另一優點在於其中密封裝置磨損後，密封殼躰中的潤滑脂不會流出，從而有傚地延長其使用壽命。
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.
如果密封間的脂堆積不能自動清除，則會導致潤滑傚果下降，故應保証壓力注油器的可靠。
jmby-pump.com