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014 Buna-N O-Ring, 70A Durometer, Black, 1/2' ID, 5/8' OD, 1/16' Width (Pack of 100)

4.4 (6) Write Review
Free shipping on orders over CA $49.99

CA $9.59

CA $ 4 .99 CA $4.99

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About this item

  • Made of Buna-nitrile (also called Buna-N) for use with a variety of fluids and hydrocarbons
  • Can be used across a wide temperature range from-30 degrees F (-34 degrees C) to 250 degrees F (121 degrees C)
  • Round in cross-section to provide a seal between cylindrical overlapping surfaces
  • Durometer (hardness) of 70A for resistance to penetration
  • Meets standards defined by Aerospace Standard AS568A


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.


Shane
Reviewed in the United States on March 5, 2025
these were too small for use with 9mm 1/2x28
Rollin Blanshine
Reviewed in the United States on September 14, 2024
THANKS!
Raven
Reviewed in the United States on February 13, 2018
perfect for what i wanted to use them for, which was to slide them on to 1/2" dowel rods to space out jewelry to keep the chains from sliding into one another.
David J. Maples
Reviewed in the United States on November 25, 2018
Showed up on time and was as described.
Donkey
Reviewed in the United States on August 23, 2017
This Ring is one of two sizes that fit on a Perlick beer faucet. In 6 years and 4 taps I had one original ring fail. I now have several lifetimes of replacement rings.
Customer
Reviewed in Canada on June 8, 2017
Very good quality at a good price. Fast delivery.