Oil Seal
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National Oil Seal

Part No. 320691 Warranty Details  

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Designed to provide enhanced endurance and maximum contamination exclusion while ensuring proper fit, form and function.
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Housing Bore:3.918
Lip Material:Fluoroelastomers
Outer Diameter:3.928


by PowerReviews
NationalOil Seal

(based on 1 review)

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Reviewed by 1 customer

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Great Product


from Wilson, NC

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3 or more reviews submitted


  • Durable
  • Easy To Install


    Best Uses

    • Everyday Driving
    • Replacement

    Comments about National Oil Seal:

    I replaced my rear main seal on my 94 Buick Lesabre with this National brand seal. It fits perfect and appears to meet the original equipment standard.

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