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Buna O-Ring, 70A Durometer, Quad, Black

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Product Specifications
Material Type
Nitrile Rubber
Color Name
Black
Brand Name
Small Parts
Cross Section Shape
Quad
Upper Temperature Range
250  Degrees Fahrenheit
Specification Met
AS568A
Hardness
70 A Durometer
UNSPSC Code
31410000
LowerTemperature Range
-30  Degrees Fahrenheit
System of Measurement
Inch

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Currently showing 1-20 of 123 Next 20 »
022 1" 1-1/8" 1/16" 0.989" 1.129" 0.07" 50 B0051XZO6Q yes $9.43 Buy Options
023 1-1/16" 1-3/16" 1/16" 1.051" 1.191" 0.07" 50 B0051XZO7K yes $12.26 Buy Options
024 1-1/8" 1-1/4" 1/16" 1.114" 1.254" 0.07" 50 B0051XZO98 yes $12.22 Buy Options
025 1-3/16" 1-5/16" 1/16" 1.176" 1.316" 0.07" 50 B0051XZOCA yes $12.46 Buy Options
026 1-1/4" 1-3/8" 1/16" 1.239" 1.379" 0.07" 50 B0051XZOF2 yes $13.04 Buy Options
027 1-5/16" 1-7/16" 1/16" 1.301" 1.441" 0.07" 50 B0051XZOJ8 yes $13.14 Buy Options
028 1-3/8" 1-1/2" 1/16" 1.364" 1.504" 0.07" 50 B0051XZOLG yes $14.30 Buy Options
029 1-1/2" 1-5/8" 1/16" 1.489" 1.629" 0.07" 50 B0051XZONE yes $12.85 Buy Options
030 1-5/8" 1-3/4" 1/16" 1.614" 1.754" 0.07" 50 B0051XZOO8 yes $13.11 Buy Options
031 1-3/4" 1-7/8" 1/16" 1.739" 1.879" 0.07" 50 B0051XZOPM yes $15.26 Buy Options
032 1-7/8" 2" 1/16" 1.864" 2.004" 0.07" 50 B0051XZOUM yes $11.34 Buy Options
033 2" 2-1/8" 1/16" 1.989" 2.129" 0.07" 50 B0051XZOY8 yes $7.65 Buy Options
034 2-1/8" 2-1/4" 1/16" 2.114" 2.254" 0.07" 50 B0051XZP56 yes $19.49 Buy Options
040 2-7/8" 3" 1/16" 2.864" 3.004" 0.07" 25 B0051XZP8I yes $15.98 Buy Options
041 3" 3-1/8" 1/16" 2.989" 3.129" 0.07" 25 B0051XZPD8 yes $18.55 Buy Options
042 3-1/4" 3-3/8" 1/16" 3.239" 3.379" 0.07" 25 B0051XZPH4 yes $20.09 Buy Options
044 3-3/4" 3-7/8" 1/16" 3.739" 3.879" 0.07" 25 B0051XZPK6 yes $30.09 Buy Options
045 4" 4-1/8" 1/16" 3.989" 4.129" 0.07" 25 B0051XZPNI yes $32.67 Buy Options
121 1-1/16" 1-1/4" 3/32" 1.049" 1.255" 0.103" 100 B0051XZPS8 yes $23.19 Buy Options
122 1-1/8" 1-5/16" 3/32" 1.112" 1.318" 0.103" 100 B0051XZPWE yes $22.63 Buy Options

Key Features

  • Made of Buna-nitrile for use with a variety of fluids and hydrocarbons
  • Four-lobe shape for lower friction and resistance to twisting
  • Can be used across a wide temperature range from -30 degrees F (-34 degrees C) to 250 degrees F (121 degrees C)
  • Quad-ring, four-lobe design for increased sealing surface and resistance to leakage
  • Durometer of 70A for resistance to penetration

Product Description

This quad-ring is made of black Buna-nitrile (also called Buna-N), has a durometer (hardness) of 70A, and can be used in a wide variety of static and dynamic sealing applications.

This Buna-nitrile quad-ring has high tensile strength, and abrasion, tear, and compression set resistance. Buna-nitrile 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, and other aliphatic hydrocarbons. Buna-nitrile is vulnerable to ozone, sunlight, and weathering and should therefore not be used in ozone-generating electric motors, welding equipment, or in applications with direct exposure to UV light.

Buna-nitrile quad-rings have 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.

Quad-rings, also called X-rings, provide a pressure and fluid seal between overlapping surfaces in static and dynamic sealing applications, and are commonly used in engines, faucets, flanges, valves, and various cylinders. They have a four-lobe design, to provide two contact points, which results in less friction, twisting and leakage. Quad-rings are available in a number of different sizes, and can be ordered based on required nominal inside diameter (ID), outer diameter (OD), and cross-sectional (CS) diameter.

Buna quad-rings meet standards defined by Aerospace Standard AS568A, Aerospace Size Standard for O-rings.

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