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#251 5 1/8" ID x 5 3/8" D x 1/8" CS Buna N (Nitrile) 90 Durometer

SKU:
ORN90-251
Weight:
0.00 LBS
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Note: The image displayed is a representation of the product. Product dimensions, finish, head type, and thread length may differ from picture. Products are guaranteed to meet the specification to which they are manufactured. Please email us with any questions.

O-Rings are round rubber washers that are placed around the valve stem in order to create a seal, preventing leaking from occurring and providing an excellent resistance to vibration. The listed size is referenced from AS568 dimensions, which is the Aerospace Size Standard for O-rings from the Society of Automotive Engineers.

Nitrile (Buna N) Specs:

  • ASTM D 1418 Designations: NBR, XNBR
  • ASTM D 2000, SAE J200 Type/Class: BF, BG, BK, CH
  • General Temperature Range: -40 to +225 F

NBR Performs Well In:

  • Petroleum oils & fuels
  • Silicon oils & greases
  • Ethylene glycol
  • Dilute acids
  • Water (Below 212 F)

NBR Does Not Perform Well In:

  • Aromatic hydrocarbons (toluene, xylene, benzene)
  • Automotive brake fluid
  • Halogen derivatives (carbon tetrachloride, trichloroethylene)
  • Ketones (acetone, MEK)
  • Phosphate ester hydraulic fluids (Skydrol, Pydraul)
  • Strong acids

Other Details

Size:
#251
Material:
Buna N (Nitrile)
Inside Diameter:
5-1/8"
Outside Diameter:
5-3/8"
Cross Section:
1/8"
Durometer:
90

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