The oil seal is a mechanical component for sealing oil, also known as a rotary shaft lip seal. Since oil enters the friction part of the machine when the machine is running, an oil seal is used to prevent the oil from leaking from the gap of the machine.
However, with the development of mechanical technology, in addition to oil, it is necessary to prevent the leakage of water and chemical liquids and the intrusion of dust, dirt, and sand from the outside. At this time, oil seals are also used;
