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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.
As an L&D Specialist being an ABDO member is crucial. I can email or call ABDO and get a prompt and friendly reply. This quick and easy access to professional and clinical guidance is brilliant. Easy access to new and relevant CET is always useful and I enjoy reading Dispensing Optics on my tablet to keep up to date. Access to Ophthalmic Lens Availability and British Standards is invaluable. In short, I would be lost without my ABDO membership.
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I have discovered so many membership benefits on the ABDO membership benefits and services page. I found great discounts on home insurance, gym membership, holidays and cinema tickets. I am looking forward to using our benefits to the full.
So many benefits
Whether you are a student or a registered optician of many years ABDO continues to evolve and support its members. Who would have thought, back in the 1990s, that it would be providing the means for members to stay registered, that area meetings would allow members to gain CET points. The benefits continue to be updated and made more relevant.
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ABDO is a progressive association with its members at the core of the decision making process. This is a great time to be part of ABDO. The broad range of benefits including free CET are very relevant and practical for all members.