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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.
BizzeeMe
2025-06-30 14:32:12
I used these fr my Halloween Jack-o-lanterns. I used solar landscape lights and had to drill a hole in the bottom of the pumpkin buckets and needed something to fit the stake snugly to keep the pumpkins from sliding down to the ground and keep them pushed up snugly at the top of the solar light. These were a good snug fit and worked great.
Janice K.
2025-05-12 17:50:05
Works like an O-ring should.
paul lombardo
2025-05-04 12:27:33
round and stretchy is the ticket
Carlton N.
2025-02-25 16:09:06
I use these O-rings to stabilize the magazine on a Taurus PT-22 pistol. I put the O-ring around the magazine then insert the magazine into the magazine well of the pistol. It keeps the magazine from rattling and misfeeding or stove piping.
J. Pittman
2025-02-15 16:51:06
These O-rings are NOT the advertised 1/16" (0.0625") thick. They are 0.070", which did not work for my 1/16" application. Truth in advertising, folks!
Limey
2025-02-14 12:11:26
Works well
Ted Bates
2024-12-24 11:31:52
no issues
David S.
2024-12-11 12:41:37
As described
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