Oil Seal
Hover over the image to zoom in
Share this:

National Oil Seal

Part No. 3393 Warranty Details  
Quantity  Add to Cart

See if this part fits a specific vehicle.

Check Vehicle Fit

Designed to provide enhanced endurance and maximum contamination exclusion while ensuring proper fit, form and function.
Back To Top
Lip Material:Fluoroelastomers

Do you have questions about this product?


Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

1 Question | 2 Answers
Displaying question 1
  • Q:

    is this the frontseal for the crank harmonic balancer
    Asked on 4/22/2012 by Anonymous

    2 answers



      This National Oil Seal with part# 3393 is designed to prevent leakage around valves, shafts, and other moving parts of the vehicle. These seals prevent fluid from leaking out between the shaft and the housing. They have a flexible lip that rubs against the shaft to prevent the leakage or ingress of fluids and dirt. These seals prevent abrasives, corrosive moisture and other harmful contaminants from entering the machines. The dimensions are 2.375" ID x 3.013" OD x 0.4" W.

      Answered on 4/22/2012 by Vincent from AAP
    • A:

      Yes this is the front crank seal

      Answered on 9/6/2013 by a from me
Displaying question 1

Do you have a question about this product? 

Check out the specials in our monthly flyer.
Disclaimer We strive to keep all information accurate and up-to-date; however, product availability, pricing, promotions and store hours are subject to change without notice. Please contact Customer Care if you have any questions or corrections.