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-316 FDAB70 FDA (NBR) Buna-N Nitrile 70 Duro O-Ring


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  • Model: FDAB70316
  • 1976 in Stock
  • 7/8"ID X 1-1/4"OD X 3/16"CS
  • Actual: 0.85"ID X 0.210"CS
  • Metric: 21.59mm ID X 5.33mm CS
  • PDF Data Sheets

O-ring Size: 7/8"ID X 1 1/4"OD X 3/16"CS

FDA Grade, Buna-N O-Rings 70 Duro (NBR):

Commonly used in applications where food or consumables are present, such as in the food processing, beverage, dairy, meat packing, and pharmaceutical industries. FDA Buna-N O-rings are also found within most food packaging equipment. FDA Buna-N O-rings are sturdy enough to handle suction and discharge for food and dairy products. It withstands temperatures of -40°F to +250°F.  FDA Nitrileis known for its high resistance to animal fat and vegetable oils. FDA Nitrile (Buna-N, NBR) is typically black or white in color. These Buna-N rubber O-rings comply with Paragraph 177.2600 of Title 21, sub-paragraphs a) through d), Code of Federal Regulations, "Rubber Articles Intended for Repeated Use". It should be noted that the Food and Drug Administration does not actually approve any rubber compounds. Rather it publishes a list of permissible ingredients and the maximum allowable concentration of each. Buna-N, also known as nitrile, o-ring is common and the simplest types of seal with an excellent sealing property and durability.

FDA, 3-A, RoHS Compliant, 70 Duro

FDA O-rings are commonly used in applications where food or consumables are present, such as in the food processing, beverage, dairy, meat packing, and pharmaceutical industries.  FDA rubber products are also found within most food packaging equipment, such as gable-top packaging machinery.

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:

  • An FDA Grade, Nitrile (Buna-N) compound
  • Color: Black
  • Duro: 70
  • FDA: Yes
  • ASTM D2000-99 Grade M2BG714 B14 EA14 F17
    Z1=TR10
    Z2=Meets FDA CFR 177.2600
  • Designed to meet or exceed the properties of these popular Nitrile /Buna-N Compounds:
    • N1069-70, N168-70, N508-75, 7077, C22-70, 2068-70, H14100 and 275B.

Operating temperature: -40° to +250°F

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