第一部分1.油封的定义所谓油封,简言之即是密封油的部件.为了使机械设备顺利地运转,在机械的摩擦部分加油.为防止油从机械的间隙漏出,就得使用油封.但是,随着机械技术的不断发展,不仅是要防止油,水和药液的泄漏,而且要防止灰尘和沙土由外部浸入机械内部,这就要使用油封.具有这层密封作用的装置,除了油封之外,还有○型圈、唇式衬垫、压盖衬垫、机械密 The first part 1. The definition of the oil seal The so-called oil seal, in short, is the seal oil parts. In order to make the smooth operation of machinery and equipment in the friction part of the oil. In order to prevent the oil from the mechanical gap leakage, you have to use the oil seal. , With the continuous development of mechanical technology, not only to prevent the leakage of oil, water and liquid medicine, but also to prevent dust and sand dipped into the machine from the outside, which requires the use of oil seal with this layer of sealing device, in addition to oil seal In addition, there are ○ ring, lip liner, gland liner, mechanical seal