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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.
Joey Lachapelle
Reviewed in Canada on May 2, 2024
Très bon
John Z
Reviewed in the United States on January 26, 2024
saved a bundle by not going to the hardware store nice product with fast shipping
Christian S.
Reviewed in Canada on June 28, 2023
Fast and accurate
Jimbo
Reviewed in the United States on September 14, 2022
Pretty chincy plastic won't last but a couple seasons
Carpenters
Reviewed in the United States on December 15, 2022
Just as expected.
James
Reviewed in the United States on April 29, 2021
Size required for Condor PCP breach seals
BYS
Reviewed in the United States on May 26, 2016
It's an o-ring, felt like of good quality, and 2c a piece...what else can we ask for? Just ordered some more for different sizes.
GaryH
Reviewed in the United States on March 6, 2016
Not much I can say about these O-rings. They seem to be high quality. I just needed one. Stretched it over the front take down pin slot on my AR upper to eliminate the wobble between the upper and lower. Saw it on Youtube. it works.
geg
Reviewed in the United States on February 5, 2016
Worked perfect. Right size. Shipped on time.
ctreader
Reviewed in the United States on September 3, 2015
Bought them to fix my leaking faucet....worked fine.
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