Sterling Seal And Supply 218 Buna/Nbr Nitrile O-Ring 70A Durometer, 500 Pack.

Buna-nitrile can have high tensile strength, and abrasion, tear, and compression set resistance. and is compatible for use with petroleum, HFA, HFB and HFC fluids, vegetable oil, alcohol, acids and aliphatic hydrocarbons. Buna-nitrile is vulnerable to acetone, ethers, esters, ozone, sunlight and weathering and should therefore not be used in ozone-generating electric motors, welding equipment, or in applications with exposure to UV light.

Product Features

  • Made of Black Buna-Nitrile (also called Buna-N) for use with a variety of fluids from petroleum to aliphatic hydrocarbons
  • O-ring Size - Actual (b) per AS568A Metric O-ring Size per AS568A (b)ID (Nominal): 1-1/4 OD (Nominal): 1/8 CS (Nominal): 1-1/2
  • Durometer (hardness) of 70A for resistance to penetration
  • Round cross-section to provide a seal between cylindrical overlapping surfaces
  • For use across a wide temperature range from -30 degrees F (-34 degrees C) to 250 degrees F (121 degrees C)



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