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  • 3.875" Inch Unitized Teflon® Lip/Nitrile Case Oil Bath Seal 380023A
  • 3.875" Inch Unitized Teflon® Lip/Nitrile Case Oil Bath Seal 380023A
  • 3.875" Inch Unitized Teflon® Lip/Nitrile Case Oil Bath Seal 380023A
  • 3.875" Inch Unitized Teflon® Lip/Nitrile Case Oil Bath Seal 380023A
  • 3.875" Inch Unitized Teflon® Lip/Nitrile Case Oil Bath Seal 380023A
  • 3.875" Inch Unitized Teflon® Lip/Nitrile Case Oil Bath Seal 380023A
  • 3.875" Inch Unitized Teflon® Lip/Nitrile Case Oil Bath Seal 380023A
  • 3.875" Inch Unitized Teflon® Lip/Nitrile Case Oil Bath Seal 380023A

    • 3.875" Inch Unitized Teflon® Lip/Nitrile Case Oil Bath Seal 380023A

    National Oil Seals

    $139.38
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    SKU:
    NAT 380023A
    UPC:
    UPC 053893526744
    Weight:
    0.99 LBS
    Shaft size:
    3.875"
    Seal outer diameter:
    5.703"
    Seal width:
    0.770"
    Seal type & style:
    10 (Oil bath)
    Lip material:
    T (Teflon®)
    Case material:
    Rubberized metal
    Temperature range:
    -20°C ~ 120°C (-4°F ~ 248°F)
    Spring retained:
    No
    Seal series:
    Gold 380000 Series
    Notable feature:
    Sure-Lock® rib design
    Installation tool:
    RD309
    Denoted measurement:
    Inch
    Shown in catalog:
    Yes
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    Product Description

  • Teflon® PTFE (Lip code: T) has excellent dry running capabilities but comes with important caveats as well.
  • Low coefficient of friction.
  • Excellent chemical resistance.
  • Resistant to oxygenated hydrocarbon blends.
  • PTFE has poor abrasion resistance to dirty environments.
  • There is high thermal expansion with PTFE.
  • Due to the delicate nature of Teflon, care must be taken when handling the seal as PTFE has unforgiving "memory" and will retain deformation of the sealing surface if banged, nicked, creased or folded during installation.
  • It must be noted that although fluoropolymers such as FKM and PTFE are classed as resistant to high temperatures, they will thermally degrade on exposure to extreme temperatures (FKM @ 316°C/600°F) and (PTFE @ 371°C/700°F) and emit hazardous fumes containing hydrofluoric acid (HF).
  • In the unlikely event of such a high temperature incident, allow the components in question to cool, douse with limewater (Calcium hydroxide solution), and handle with PVC gloves until neutral pH confirmed, then discard.

  • 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.

    adobepdficon.png Timken Metric Oil Seal Catalog

    adobepdficon.png National 7707 Inch Oil Seal Catalog & Interchange

    adobepdficon.png Useful Taper Set/Seal Combination & Interchange Chart

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    Custom Field

    Shaft size 3.875"
    Seal outer diameter 5.703"
    Seal width 0.770"
    Seal type & style 10 (Oil bath)
    Lip material T (Teflon®)
    Case material Rubberized metal
    Temperature range -20°C ~ 120°C (-4°F ~ 248°F)
    Spring retained No
    Seal series Gold 380000 Series
    Notable feature Sure-Lock® rib design
    Installation tool RD309
    Denoted measurement Inch
    Shown in catalog Yes

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