- Oil seals, on the other hand, are a specific type of spare part that serves a crucial function. They are designed to prevent oil leaks and ingress of contaminants into the machinery, thereby maintaining lubrication and preventing damage to sensitive components. Oil seals are made from various materials, each tailored to suit different operating conditions and environments. From rubber to metal and Teflon, these seals ensure the integrity of the oil system, enhancing the overall efficiency and lifespan of the machinery.
Maintenance and Replacement of Oil Seals:
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By preventing lubricants from escaping, they protect key components of machinery from being damaged by leaks of various fluids. Everything from car engines to assembly machines use these oil seals to remain free from any harmful interactions that can cause serious and expensive damage to any of their critical parts.
Oil Seals: Function & Maintenance

The skeleton oil seal structure consists of three parts: the oil seal body, the reinforced skeleton and the self-tightening coil spring. The sealing body is divided into bottom, waist frame oil seal structure diagram, cutting edge and sealing lip according to different parts. Generally, the inner diameter of the skeleton oil seal in the free state is smaller than the shaft diameter, that is, it has a certain interference. Therefore, after the oil seal is installed on the oil seal seat and the shaft, the pressure of the oil seal edge and the contraction force of the self-tightening coil spring will produce a certain radial tightening force on the shaft. After a period of operation, the pressure will rapidly decrease or even disappear. , Therefore, adding a spring can compensate for the self-tightening force of the oil seal at any time.

Fluoro rubber (FKM)
Rubber type
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.
Oil Seals 101 – Part 1
Choose a seal that has the appropriate dimension needed for your application. The seal should properly fit the space between the stationary and rotating parts.
What is Oil Seal
What materials are available?


