417 Buna-N O-Ring, 70A Durometer, Round, Black, 3-1/2" ID, 4" OD, 1/4" Width (Pack of 10) Made of Buna-nitrile (also called Buna-N) for use with a variety of fluids and hydrocarbons Can be used across a wide temperature range from -30 degrees F (-34 degrees C) to 250 degrees F (121 degrees C) Round in cross-section to provide a seal between cylindrical overlapping surfaces Durometer (hardness) of 70A for resistance to penetration Meets standards defined by Aerospace Standard AS568...
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