Yes. According to the query on Zuangua Patent Network, packing can replace the skeleton for oil sealing. Packing bearing oil seal is the seal of the bearing. It is mainly used to prevent oil leakage and also has the function of preventing external foreign matter (such as water) from entering the bearing. In a certain To a certain extent, it can be said to be a dust cover. It is generally customary to call the seal that seals oil an oil seal, and the seal that seals water a water seal. In fact, they are two names for one seal.