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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.
Slydways
Reviewed in the United States on March 2, 2024
I ordered 1 bag of 100 to verify that they fit. They did so I ordered a second bag. One of the bags was short 4 parts, only had 96.
PJ
Reviewed in Canada on April 29, 2024
No issues. It worked.
marianne m
Reviewed in the United States on November 8, 2023
as expected
E. Chal
Reviewed in Canada on November 27, 2023
On the packaging they specify 0.139" thick, not 0.125" and they do measure 0.139", its not a big deal unless you're rebuilding an air spool valve with tight tolerances. Otherwise seem to descent quality
supersoft
Reviewed in Canada on February 24, 2022
Quick delivery and exactly what was described in the product description. Would buy again.
Dave
Reviewed in Canada on July 9, 2021
These fill the sharp edged grooves in full size Ka-bar knife handles. This works on both leather and Kraton G handles for the full size Mk II knives. The leather in particular benefits from the increased grippiness of the o-rings and they also fill out the handle in to the swell of the palm.They are a bit of a stretch to get over the pommel but worth the effort. I found it easiest to get one on the handle, roll it into the first groove. Then do the next until all 5 are installed.Order this pack with 100 o-rings rather than the 10 pack for $12 that my friend ordered.Note: Too short to fit the Short Ka-bar knives. I have ordered 9/16" ID rings for that model.
Éric
Reviewed in Canada on March 15, 2021
Super. Parfais pour mes besoins. Jen recommande bientôt !
Debbie
Reviewed in the United States on August 13, 2020
I built a bottle art fence and used these in between the bottles. Oh, joy, they are working great.I can not comment the durability.
Joseph Ambuul
Reviewed in the United States on February 20, 2017
Lord of the O-Rings !
Ray
Reviewed in the United States on February 23, 2016
Fast delivery, just what I needed
C. Taylor
Reviewed in the United States on July 14, 2015
Great product; I would definitely recommend it to a friend.
dean P. raymond
Reviewed in the United States on June 17, 2015
Was exactly what I needed
Tinker
Reviewed in the United States on March 19, 2015
good product
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