Othmro Nitrile Rubber O-Rings 47.6mm OD 42.3mm ID 2.65mm Width, Metric Buna-N Sealing Gasket, Pack of 10

They are circular in shape, round in cross-section. For use across a wide temperature range from -30 degrees F (-34 degrees C) to 250 degrees F (121 degrees C). These O rings are made of black nitrile rubber, these durable metric O-rings resist oils, hydraulic fluid and water. Circular Cross-Section Designed for use in a wide variety of sealing applications. Commonly provide a pressure and fluid seal between cylindrically shaped, overlapping mating surfaces and are commonly seen in engines, faucets, flanges, valves, and various cylinders. Nitrile Butadiene Rubber O-rings Good mechanical properties and high wear resistance NBR. Good resistance to many petroleum oils, greases, hydraulic fluids, alcohol, mineral oil, and grease. 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.