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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-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, acids and aliphatic hydrocarbons. 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 Buna O-ring has a shore durometer of 70A. Shore durometer is the hardness of a material, and its resistance to permanent indentation. A higher durometer value indicates greater resistance to indentation on a scale of 0 to 100, with 100 indicating no indentation.
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. They are circular in shape, with a round cross section, and a hole in the center, similar to a doughnut. 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.
These Buna-nitrile O-rings meet standards defined by Aerospace Standard AS568A, which is the Aerospace Size Standard for O-rings.
Brenda Marcos
Reviewed in the United States on August 12, 2023
they are super heatresitant... and tough... good price... I will be buying more in the future
Bradley W. Frank
Reviewed in the United States on September 11, 2022
Exactly what I expected!
Bruce S
Reviewed in the United States on February 26, 2022
Just as described.
@mintstandardstudios
Reviewed in the United States on March 31, 2021
I needed these to make custom shift boots and have an o-ring at top to seat itself on the M/T stick, great quality and the best price you will find anywhere.
Senior
Reviewed in the United States on April 16, 2021
Product exactly as described, quick delivery with UPS.
ron k
Reviewed in the United States on July 15, 2020
Perfect size, great value for the money!! Excellent!
Darbohm
Reviewed in the United States on November 2, 2019
Good value
Michael Bush
Reviewed in the United States on June 20, 2018
Perfectly good "O" rings.
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