油封是润滑系密封的重要部件。它可防止灰尘杂质进入润滑系内，又防止润滑油外漏，保证润滑系正常工作。在安装使用油封时应注意以下几点：一、正确安装１安装油封时不许用头乱敲、用改锥乱撬，安装油封的轴颈要有相应的倒角，并修去毛刺，以免安装时划破唇口。２安... Oil seal is an important part of the lubrication system seal. It prevents dirt and dust from entering the lubrication system, but also to prevent leakage of lubricating oil, lubrication system to ensure the normal work. In the installation and use of oil seal should pay attention to the following points: First, the correct installation 1  Install the oil seal should not be used to stir the first chaos knock, screwdriver pry change, install the oil seal of the journal should have the appropriate chamfer, and repair the burr, so as not to Break the lip when installed. 2  security ...