shaft seal wheel hub

3. Application Type The nature of the application—whether dynamic, static, or mixed—will influence the choice of seal type, as each type offers different benefits.

2. Protection Against Contaminants Hub oil seals play an essential role in safeguarding the internal components of the wheel hub from contaminants. Dust, dirt, and moisture can lead to corrosion and premature failure of parts if they penetrate the hub area. An effective oil seal acts as a barrier, ensuring only clean, lubricated parts work together.

Oil seals are generally constructed from materials that can withstand the specific chemical properties of the lubricant they are sealing. Common materials include rubber, silicone, and various elastomers. The design of an oil seal often incorporates a lip that rolls against a shaft or surface, creating a dynamic seal that can accommodate movement while maintaining its sealing capabilities.

The first figure, 22%, typically refers to the efficiency rate of a sealing system. In many mechanical applications, oil seals operate under various conditions and stresses. A 22% efficiency rating means that seals must be capable of withstanding fluctuations in temperature and pressure, ensuring that the lubricating oil remains contained. A higher efficiency rate often translates to a longer lifespan for machinery, thus saving costs in maintenance and potential downtime.