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  • 1.375" Inch Metal Single Lip Polyacrylate Oil Seal 4638N
  • 1.375" Inch Metal Single Lip Polyacrylate Oil Seal 4638N
  • 1.375" Inch Metal Single Lip Polyacrylate Oil Seal 4638N
  • 1.375" Inch Metal Single Lip Polyacrylate Oil Seal 4638N
  • 1.375" Inch Metal Single Lip Polyacrylate Oil Seal 4638N

    • 1.375" Inch Metal Single Lip Polyacrylate Oil Seal 4638N

    National Oil Seals

    $9.36
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    SKU:
    NAT 4638N
    UPC:
    UPC 053893508955
    Weight:
    0.02 LBS
    Shaft size:
    1.375"
    Seal outer diameter:
    1.989"
    Seal width:
    0.192"
    Seal type & style:
    48 (Single lip)
    Lip material:
    N (Polyacrylate)
    Case material:
    Redicoat® on metal case
    Temperature range:
    -25°C ~ 149°C (-13°F ~ 300°F)
    Spring retained:
    Yes
    Seal series:
    4000
    Hardness:
    70 Durometer
    Notable feature:
    Bi-Directional lip design
    Denoted measurement:
    Inch
    Shown in catalog:
    Yes
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    Product Description

  • Polyacrylate (Lip code: N) are well suited for use with extreme pressure (EP) lubricants and have higher resistance to oxidation and ozone than nitrile.
  • Resistant to sulphur commonly used as a grease additive.
  • Polyacrylate elastomers have good compatibility with higher temperatures up to 149°C (300°F), and even to 177°C (350°F) with some fluids.
  • They should not be used alongside water or other aqueous solutions.
  • Does not perform at temperatures below -40°C (-40°F)
  • Polyacrylates are not recommended for dry running applications.

  • Many of Nationals metal cased seals are offered with Redi-Coat® rubberized coating which is applied over the seals bare metal case and helps fill in any minor bore imperfections upon installing the new seal.

  • 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.

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    Custom Field

    Shaft size 1.375"
    Seal outer diameter 1.989"
    Seal width 0.192"
    Seal type & style 48 (Single lip)
    Lip material N (Polyacrylate)
    Case material Redicoat® on metal case
    Temperature range -25°C ~ 149°C (-13°F ~ 300°F)
    Spring retained Yes
    Seal series 4000
    Hardness 70 Durometer
    Notable feature Bi-Directional lip design
    Denoted measurement Inch
    Shown in catalog Yes

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