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  • 4.625" Inch Unitized Nitrile Oil Bath Seal 370051A
  • 4.625" Inch Unitized Nitrile Oil Bath Seal 370051A
  • 4.625" Inch Unitized Nitrile Oil Bath Seal 370051A
  • 4.625" Inch Unitized Nitrile Oil Bath Seal 370051A
  • 4.625" Inch Unitized Nitrile Oil Bath Seal 370051A
  • 4.625" Inch Unitized Nitrile Oil Bath Seal 370051A
  • 4.625" Inch Unitized Nitrile Oil Bath Seal 370051A
  • 4.625" Inch Unitized Nitrile Oil Bath Seal 370051A

    • 4.625" Inch Unitized Nitrile Oil Bath Seal 370051A

    National Oil Seals

    $150.92
    (No reviews yet) Write a Review
    SKU:
    NAT 370051A
    UPC:
    UPC 053893527611
    Weight:
    1.03 LBS
    Shaft size:
    4.625"
    Seal outer diameter:
    6.629"
    Seal width:
    1.093"
    Seal type & style:
    03 (Oil bath)
    Lip material:
    S (Nitrile)
    Case material:
    Redicoat® on metal case
    Temperature range:
    -35°C ~ 120°C (-30°F ~ 250°F)
    Spring retained:
    Yes
    Seal series:
    Red 37 Series
    Hardness:
    70 Durometer
    Notable feature:
    Sure-Lock® rib design
    Installation tool:
    RD285
    Denoted measurement:
    Inch
    Shown in catalog:
    Yes
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    Product Description

  • Nitrile (Lip code: S) is the most commonly used sealing material as nitrile is excellent with most mineral oils and greases.
  • Offers desirable "low swell" properties across many hydrocarbon fluid types.
  • Variations are available for use with fuels, industrial fluids and highly compounded lubricants.
  • Nitrile works in dry running applications but only for intermittent periods.
  • Some water based fluids such as certain cutting fluids, can destroy the nitrile/plain steel case bond when operating temperatures exceed 66°C (150°F)
  • Nitrile exhibits poor ozone resistance.
  • Poor resistance to lubricants containing sulphur, EP additives, or oxygenated hydrocarbons.

  • Unitized seals spin on their own inner, wearable, elements, not your expensive axle shaft. They sacrifice their inner components so your axles stay clean and smooth.
  • The inner diameter of the seal seats snuggly on the axle and rotates with it, not cutting into it with road grime and other contaminants that would normaly augur in and mix with the bearing grease resultantly cutting into the axle shaft.
  • Unitized oil seals have shown to be more fuel efficient than traditional "heavy garter spring on metal wear sleeve" sealing solutions from the past.
  • Please note special tooling is required to properly install Unitized Oil Seals as they are easily damaged upon installation if they are mistruck during installation.

  • Please note that not all product images are representative of the item being shown but are similar in appearance. Please refer to the seals technical specifications sheet provided in the image carousel for absolute confirmation before ordering.

    Follow this link for access to Timken's interactive, multi-vehicle, bearing & seal application database.

    Follow this link to access Timken's National oil seal & competitor's interchange.

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    Custom Field

    Shaft size 4.625"
    Seal outer diameter 6.629"
    Seal width 1.093"
    Seal type & style 03 (Oil bath)
    Lip material S (Nitrile)
    Case material Redicoat® on metal case
    Temperature range -35°C ~ 120°C (-30°F ~ 250°F)
    Spring retained Yes
    Seal series Red 37 Series
    Hardness 70 Durometer
    Notable feature Sure-Lock® rib design
    Installation tool RD285
    Denoted measurement Inch
    Shown in catalog Yes

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