345 Buna O-Ring, 70A Durometer, Black, 4" ID, 4-3/8" OD, 3/16" Width (Pack of 1000) o-ring Also available in single pack

Also available in single pack

properties and oxidation resistance

Also available in red silicone with higher heat resist with or without lube

Can be used across a wide temperature range from -15 degrees F (-26 degrees C) to 400 degrees F (205 degrees C)

345 Buna O-Ring, 70A Durometer, Black, 4" ID, 4-3/8" OD, 3/16" Width (Pack of 1000) o-ring Also available in single packThis 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 nitrile can have high tensile strength, and abrasion, tear, and compression set resistance. 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,