What are rotary shaft seals?
Lubricant
The basic principle of sealing is straightforward – the flexible lip is held against the rotating part (usually the shaft) whilst the casing (or O.D.) is pressed into the housing or bore and holds the seal in place. The sealing lip needs some form of lubrication to avoid overheating and is usually energized by means of a garter spring.

shaft oil seal. This is crucial in many industries, such as automotive, manufacturing, and aerospace, where the loss of fluids can lead to equipment failure and costly repairs. In addition to preventing leaks, shaft oil seals also help to extend the lifespan of the machine by reducing wear and tear on the components.
6, the seal is cheap.
Oil seals come in a range of sizes ranging from 0 cm to 33 cm, and choosing the right size is critical to performance. The size of an oil seal is determined by the following dimensions: