349 Buna-N O-Ring, 70A Durometer, Black, 4-1/2" ID, 4-7/8" OD, 3/16" Width (Pack of 100) on Amazon™

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349 Buna-N O-Ring, 70A Durometer, Black, 4-1/2" ID, 4-7/8" OD, 3/16" Width (Pack of 100)

Price with discount: $42.90 |

Product Details

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

This item is eligible for FREE SHIPPING

Sale Price: $42.90

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Customer Review

Very tough Ball Mill belt
Ordered to try as replacement ball mill belt. Outlasts the "official" belt by 10X and at 7 cents apiece versus $6. Need ball mill belts? Cannot go wrong with this one! Works with the very popular 3# and 6# dual drum mill.
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September 25, 2009 (Denver, CO USA) | Helpful Votes: 1 | Rating: 5

Perfect!
I'm using these for a mixed-media art project. They're VERY durable (tried to break one by stretching it, and it WON'T break), and the dimensions are exactly as described. Thanks! ~G
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February 24, 2012 (Norfolk, VA USA) | Helpful Votes: 0 | Rating: 5

9" O-Ring
This was a perfect size for what I needed and just as you would expect an O-Ring to be!!! I used it as a drive belt.
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August 10, 2011 | Helpful Votes: 0 | Rating: 5

Product Description

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.

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039 Buna-N O-Ring, 70A Durometer, Black, 2-3/4" ID, 2-7/8" OD, 1/16" Width (Pack of 100)

Price with discount: $16.82 |

Product Details

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

This item is eligible for FREE SHIPPING

Sale Price: $16.82

Customer Review

September 25, 2009 (Denver, CO USA) | Helpful Votes: 1 | Rating: 5

February 24, 2012 (Norfolk, VA USA) | Helpful Votes: 0 | Rating: 5

9" O-Ring
This was a perfect size for what I needed and just as you would expect an O-Ring to be!!! I used it as a drive belt.
Top to learn more

August 10, 2011 | Helpful Votes: 0 | Rating: 5

Product Description

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.

These Buna-nitrile O-rings meet standards defined by Aerospace Standard AS568A, which is the Aerospace Size Standard for O-rings.

Top to learn more

BUY 039 Buna-N O-Ring, 70A Durometer, Black, 2-3/4" ID, 2-7/8" OD, 1/16" Width (Pack of 100)

-328 Buna O-Ring 70A Durometer Black 1-7 8 ID 2-1 4 OD 3 16 Width Pack of 100

228 Buna-N O-Ring, 70A Durometer, Black, 2-1/4" ID, 2-1/2" OD, 1/8" Width (Pack of 10) Feature 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... A higher durometer value indicates greater resistance to indentation on a scale of 0 to 100, with 100 indicating no indentation. 228 Buna-N O-Ring, 70A Durometer, Black, 2-1/4" ID, 2-1/2" OD, 1/8" Width (Pack of 10) Review . See more picture @ amazon. These Buna-nitrile O-rings meet standards defined by Aerospace Standard AS568A, which is the Aerospace Size Standard for O-rings.

226 Silicone O-Ring, 70A Durometer, Red, 2" ID, 2-1/4" OD, 1/8" Width (Pack of 10) Feature Made of silicone for use with a variety of chemicals and fluids Can be used across a wide temperature range from -65 degrees F (-54 degrees C) to 450... A higher durometer value indicates greater resistance to indentation on a scale of 0 to 100, with 100 indicating no indentation. 226 Silicone O-Ring, 70A Durometer, Red, 2" ID, 2-1/4" OD, 1/8" Width (Pack of 10) Review . See more picture @ amazon. Silicone is acceptable for temperature applications between -65 degrees F (-54 degrees C) to 450 degrees F (232 degrees C). It has good resistance to ozone, weather, detergent, salt water, engine and transmission oil, non-petroleum brake fluid,...

A higher hardness value indicates a greater resistance to compression on a scale of 0 to 100, with 100 indicating that there is no deflection. Product Details Amazon Sales Rank: # 3663 in BISS Size: 377 Color: Black Brand: Small Parts Model: 377 Number of items: 1 Features Made of Buna-nitrile (also known as Buna-N) for use with a variety of liquids and hydrocarbons can be used on a large ... ) Rating & Description O-ring is made of Buna-black nitrile is round cross-section, a hardness of 70A, and is intended for use in a wide range of the application.This Buna Nitrile O-rings conform to standards AS568A Aerospace Standard, which is the Aerospace size standard for O-rings.

A higher durometer value indicates greater resistance to indentation on a scale of 0 to 100, with 100 indicating no indentation. Product Details Amazon Sales Rank: #2518 in BISS Size: 428 Color: Black Brand: Small Parts Model: 428 Number of items: 10 Features Made of Buna-nitrile (also called Buna-N) for use with a variety of fluids and hydrocarbons Can be used across a... ) Review & Description 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. These Buna-nitrile O-rings meet standards defined by Aerospace Standard AS568A, which is the Aerospace Size Standard for O-rings.

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