1.32mm X 4.5mm (NBR) Buna-N 70 Duro Metric O-Ring


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1.32mm Cross Section "CS" X 4.5mm Inside Diameter "ID"

High-Performance Nitrile (Buna-N) Metric O-Rings for Broad Applications: Emphasizing practicality and efficiency, our Buna-N Nitrile O-Rings are a superior choice for a range of general-purpose sealing needs. These O-rings are exceptionally adept at handling petroleum oils, various hydraulic fluids, L.P. gases, and cold water, along with silicone greases and certain lubricants. They are not recommended for exposure to harsh chemicals like halogenated and nitro hydrocarbons, strong acids, and ozone, as well as conditions involving sunlight and extreme weather. The B70 model is a sulfur-cured Nitrile compound, black in color, with a hardness of 70 Duro, designed to provide reliable performance under varied conditions.

Buna-N / Nitrile Recommended uses:

  • General purpose sealing.
  • Petroleum oils and fluids.
  • Gasoline
  • Hydraulic fluids
  • L.P. gases
  • Cold Water.
  • Silicone greases and oils
  • Di-ester base lubricants (MIL-L-7808).
  • Ethylene glycol base fluids (Hydrolubes)

Nitrile is not recommended for:

  • Halogenated hydrocarbons (carbon tetrachloride, trichloroethylene)
  • Nitro hydrocarbons (nitrobenzene, aniline)
  • Phosphate ester hydraulic fluids (Skydrol, Fyrquel, Pydraul).
  • Ketones (MEK, acetone)
  • Ozone
  • Sunlight, UV
  • Weather
  • Strong Acids Ozone
  • Automotive brake fluid

Compound Info:

  • B70: A general purpose, sulfur-cured Nitrile (Buna-N) compound
  • Color: Black
  • Duro: 70
  • FDA: No
  • B70 is designed to meet or exceed the properties of these popular Buna Nitrile Compounds:
    N674-70, N100-70, 7507, B46-70, 4200-70, H14327, 4700-70 and 366Y

Operating temperature: -40° to +250°F

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