National Oil Seals

National Oil Seals

National Oil Seals, now under the Timken umbrella, are high quality products. Oil seals are used wherever shafts rotate and bearings require lubrication to work effectively. Timken’s National Oil Seal line of O-ring seal kids boast the coverage necessary for the gamut of popular applications. These handy oil seals serve to close spaces between stationary and moving components in mechanical equipment, also helping to prevent lubricant from escaping the system. They also serve to block harmful contaminants from entering machinery, especially within severe environments. National Oil Seals or other Timken products feature precision sealing designs that are well-matched for use with original equipment and in aftermarket applications as well. These seals are great for thousands of applications across many different industries like automotive, manufacturing, power transmission, and more. 

Oil seals are often called dirt, fluid, or grease seals, and they serve to close spaces between stationary and moving components within mechanical machinery. They are designed to prevent the escape of lubricant necessary for proper function. They also serve to keep various contaminants from entering machinery. 

Types of oil seals include:

  • single and double lip
  • rubber or polymer
  • metal cased
  • spring loaded
  • internal, external, and axial oriented

Pro Source stocks thousands of National Oil Seals and Timken branded products such as:

  • National Oil Seals Ball Bearings 
  • National Oil Seals Cylindrical Bearings 
  • National Oil Seals Housed Units 
  • National Oil Seals Precision Bearings 
  • And more! 

Just use the "all products" search bar at the top of this page to search for specific National Oil Seal bearings and other Timken products by item number. If we don’t have what you need, we can find it!

Why Choose Pro Source

Thousands of Brands and Products

Thousands of Brands and Products

From everyday parts to hard-to-find items, our catalog of products is vast. Can’t find what you need? No problem. Call us, and we’ll help you find it!

Legendary Customer Service

Legendary Customer Service

Our Chattanooga-based team is invested. We care about what we do, and we care about the customer. We won’t rest until you find the products you need.

Competitive Pricing

Competitive Pricing

Enjoy everyday savings when you shop ProSource. Not only do we have extensive inventory, but our prices are the best around!

Fast Delivery You Can Count On

Fast Delivery You Can Count On

We’ll get what you need boxed up and on its way to you pronto. No hassle. No worry. Just the products you ordered– shipped directly to you.

Net 30 Payment Option

Net 30 Payment Option

Order right away, pay in 30 days. We offer net 30 payment opportunities for qualified buyers for quick and easy transactions.

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