393 Buna/NBR Nitrile O-ring 90A Durometer Black, Sterling Seal and Supply (25 Pack)

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): 24 OD (Nominal): 3/16 CS (Nominal): 24-3/8 Durometer (hardness) of 90A for resistance to penetration Round cross-section to provide a seal between cylindrical overlapping surfaces For use across a wide temperature range from -40 degrees F (-40 degrees C) to 212 degrees F (100 degrees C)