The oil seal is the part of the machine that seals the lubricant. Lubricants are used in the friction areas of the machine to ensure smooth movement and long life, and oil seals are used to prevent this lubricant from leaking through “bearing clearances.” ” of the machine. With advances in mechanical engineering, it has become necessary to prevent the leakage not only of lubricants but also of water or chemicals, as well as prevent the entry of dirt into the machine. Oil seals are used to perform both functions.
