NNK Oil Seals Factory - Honest and Reliable Supplier in China

NNK Oil Seals Factory - Honest and Reliable Supplier in China.An oil seal, often referred to as a "labyrinth seal," "shaft seal," or "lip seal," is a mechanical component that fits into a specific housing or bore around a rotating shaft. Its primary function is to seal the space between the shaft and an external environment.

What is an oil seal?

An oil seal, often referred to as a "labyrinth seal," "shaft seal," or "lip seal," is a mechanical component that fits into a specific housing or bore around a rotating shaft. Its primary function is to seal the space between the shaft and an external environment, preventing oil and lubricant from leaking out while simultaneously blocking dirt, dust, and moisture from entering. This is critical in maintaining proper lubrication, which in turn assures efficient operation, reduces wear and tear, and extends the lifespan of machinery.

Typically made from rubber, polyurethane, or various elastomeric materials, oil seals often feature a series of components including a sealing lip, a metal casing, and sometimes additional features like spring-loaded seals to enhance performance. The sealing lip is usually designed to make contact with the rotating shaft, creating a dynamic seal that adjusts to variations in shaft movement and wear, thus ensuring long-term effectiveness.

Construction of the oil seal

The inner skeleton of the oil seal is an inner metal ring that provides structural support for the oil seal.

Nitrile rubber and other materials are used to make the outer skin as needed.

The spring on the oil seal lip is used to support the lip and prevent lubricant from leaking out and foreign contaminants from entering.

Factors to consider when using oil seals

Several conditions must be met for oil seals to work properly. These factors include:

The shaft to which the oil seal is mounted should be ground to a surface finish or roughness between 0.2 and 0.8 microns. The shaft should be hardened to at least 40 to 45 HRc to avoid grooves on the shaft due to spring pressure.

In order to avoid wear grooves (wear grooves usually cause the oil seal lip to wear faster), the area where the oil seal is located must be deep ground.

Choosing the right oil seal supplier

To ensure that you get the most favorable results when purchasing oil seals from an oil seal supplier, it is important to compare multiple companies using our oil seal supplier directory. The NNK website has a business profile page that highlights our areas of experience and capabilities, as well as a product catalog to communicate directly with suppliers for more information or to request a quote. You can get the product catalog you need by sending an inquiry, looking forward to cooperating with you

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