-436 Buna O-Ring, 70A Durometer, Black, 5-7/8" ID, 6-3/8" OD, 1/4" Width (Pack of 25)




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Product Details

  • Made of Buna-nitrile (also called Buna-N) for use with a variety of fluids and hydrocarbons
  • Durometer (hardness) of 70A for resistance to penetration
  • Meets standards defined by Aerospace Standard AS568A
  • 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)


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Sale Price: $14.99




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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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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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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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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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-435 Buna O-Ring 70A Durometer Black 5-3 4 ID 6-1 4 OD 1 4 Width Pack of 25


Product Details Amazon Sales Rank: #1687 in BISS Size: 356 Color: Black Brand: Small Parts Model: 356 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. 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.

Product Details Amazon Sales Rank: #1279 in BISS Size: M2x9 Color: Black Brand: Small Parts Model: M2x9 Number of items: 100 Features Made of Buna-nitrile for use with a variety of fluids and hydrocarbons Can be used across a wide temperature... ) Review & Description This O-ring is made of Buna-nitrile (also called Buna-N), round in cross-section, has a durometer of 70A, and is designed for use in a wide variety of sealing applications. It is acceptable for temperature applications between -30 degrees F (-34 degrees C) to 250 degrees F (121 degrees C). It is compatible for use with petroleum, HFA, HFB, and HFC fluids, vegetable oil, alcohol, acids, and aliphatic hydrocarbons. O-rings are available in a number of sizes, and can be ordered based on required nominal inside diameter (ID), outer diameter (OD), and cross-sectional (CS) diameter.

5 Number of items: 100 Features Made of Buna-nitrile 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...

Product Details Amazon Sales Rank: #1183 in BISS Size: 214 Color: Black Brand: Small Parts Model: 214 Number of items: 6 Features Made of black Aflas (fluoroelastomer) for use with a variety of chemicals and applications Durometer (hardness) of... It has a round cross-section and can be used across a wide temperature range (25 degrees F/-3. 8 degrees C to 450 degrees F/232 degrees C). Designed for use in a wide variety of sealing applications, this Aflaz O-ring meet standards defined by... O-rings are available in various AS568A dash sizes, which is the standardized sizing for O-rings, and defines the nominal inside diameter (ID), outer diameter (OD), and cross-sectional (CS) diameter of an O-ring. The letter following the number identifies the shore scale, which is either shore A or D. Shore A is used for softer plastics, while shore D is used for harder plastics.



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