Buna-n O-rings 70a Durometer 1-7/8 Id As568a Buna-N O-Rings 328 Size - 70A Durometer, 1-7/8 ID X 2-1/4 OD X 3/16 Width (Pack Of 50) Nitrile Rubber Seals

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. This O-ring is made of black Buna-nitrile, is round in cross-section, has a durometer of 70A, and is designed for use in a wide variety of sealing applications. Buna-n O-rings 70a Durometer 1-7/8 Id As568a Buna-N O-Rings 328 Size - 70A Durometer, 1-7/8 ID X 2-1/4 OD X 3/16 Width (Pack Of 50) Nitrile Rubber Seals Round in cross-section to provide a seal between cylindrical overlapping surfaces These Buna-nitrile O-rings meet standards defined by Aerospace Standard AS568A, which is the Aerospace Size Standard for O-rings. O-rings are available in various sizes, and can be ordered based on required nominal inside diameter (ID), outer diameter (OD), and cross-sectional (CS) diameter. EAI AS568 O'Ring Seal #034 (Pack of 50) ID: 2 1/8" CS It can be used in temperatures between -30 degrees F (-34 degrees C) to 250 degrees F (121 degrees C), and is compatible for use with petroleum, HFA, HFB and HFC fluids, vegetable oil, alcohol, acids and aliphatic hydrocarbons. O-rings 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. O-Ring, Black BUNA/NBR Nitrile Size: 328, Durometer: 70 Nominal Dimensions: Inner Diameter: 1 17/20(1.85) Inches (4.699Cm), Outer Diameter: 2 10/37(2.27) Inches (5.7658Cm), Cross Section: 17/81(0.21) Inches (5.33mm) Part Number: ORBN328 328 Buna-N O-Ring, 70A Durometer, Black, 1-7/8" ID, 2-1/4" OD, 3/16" Width (Pack of 50) ; Nominal Inside Diameter, 1.85 Inches (4.7 cm) ; Package Dimensions, 7.4... Durometer (hardness) of 70A for resistance to penetration Buna-nitrile can have high tensile strength, and abrasion, tear, and compression set resistance. Shore durometer is the hardness of a material, and its resistance to permanent indentation.