Oil seal is an indispensable seal product in industry and machinery. It is very popular among the people. It is not unreasonable to describe the oil seal with low cost and high value. Today I will introduce the classification of oil seal. The classification of oil seals is generally divided according to the material: skeleton oil seal, no skeleton oil seal, nitrile rubber oil seal, EPDM oil seal, fluorine rubber oil seal, silicone rubber oil seal, PTFE oil seal and so on.
油封是工业，机械上面不可或缺的一种密封制品，深受广大人们喜爱，低成本高价值形容油封是不为过的，今天我为大家介绍一下油封的分类。
油封的分类一般按材质分的比较多：
骨架油封，无骨架油封，丁晴橡胶油封，三元乙丙油封，氟橡胶油封，硅橡胶油封，聚四氟乙烯油封等等。
油封的应用领域：
广泛应用于航空、汽车、摩托车、铁道、车辆、船舶、家电、工程机械等行业。适用于旋转运动及往复运动密封。安装在各重型号发动机、变速箱、车桥、轮船、汽缸等部位。主要防止被密封介质（气体.液体。）渗透及外部异物进入机体。
