uxcell Nitrile Rubber O-Rings 77mm OD 74mm ID 1.5mm Width Metric Buna-N Sealing Gasket Pack of 25

Specifications: Inner Diameter: 74mm / 2.91-inch Outside Diameter: 77mm / 3.03-inch Cross-Section Diameter: 1.5mm / 0.06-inch Package Contents: 25pcs x O-Ring Descriptions: 1. 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). 2. Buna N or Nitrile has good mechanical properties when compared with other elastomers and high wear resistance. Good resistance to many petroleum oils, greases, hydraulic fluids, alcohol, mineral oil and grease. 3. This O-ring is made of black nitrile rubber, has a durometer of 50A, and is designed for use in a wide variety of sealing applications. 4. O-rings commonly provide a pressure and fluid seal between cylindrically shaped, overlapping mating surfaces and are commonly seen in engines, flanges, valves, and various cylinders. 5. 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.