0 items added

To add items, choose from the table below

Image Unavailable

Image not available for
Color:
  • Buna O-Ring, 90A Durometer, Round, Black
  • Sorry, this item is not available in
  • Image not available
  • To view this video download Flash Player
      
Image is representative of the product family. Select individual products in the table below for more specific images and product specifications

Buna O-Ring, 90A Durometer, Round, Black

Available in multiple versions

14 customer reviews

Price: $2.12 - $29.20
Product Specifications
Brand Name Small Parts
Material Type Nitrile Rubber
Hardness 90 A Durometer
System of Measurement Inch
Color Black
Cross Section Shape Round
LowerTemperature Range -30  Degrees Fahrenheit
Upper Temperature Range 250  Degrees Fahrenheit
Specification Met AS568A
Durometer 90a
UNSPSC Code 31410000

This O-ring is made of black Buna-nitrile (Buna-N) and has a durometer of ... Read full product description



A Full Selection of Hydraulic, Pneumatic & Plumbing Products
pipe fittings
Pipe Fittings
seals
Seals
hydraulic valves
Hydraulic Valves
flow control and filtration products
Shop all
Currently showing 1-20 of 630 Next »
Size Nominal Inside Diameter Nominal Outside Diameter Nominal Width Inside Diameter Outside Diameter Overall Width Number of Items Part Number Price Quantity
   
001 0.029 inches 3/32 inches 0.04 inches 0.029 inches 3/32 inches 0.04 inches 100 B0051XYKV6
In Stock (3)
$2.24
Prime Eligible
001 0.029 inches 3/32 inches 0.040 inches 0.029 inches 0.109 inches 0.040 inches 1000 B00M90AR6G
In Stock (1)
$12.61
Prime Eligible
002 0.042 inches 9/64 inches 0.05 inches 0.042 inches 9/64 inches 0.05 inches 100 B0051XYKY8
In Stock (2)
$5.06
Prime Eligible
002 0.042 inches 9/64 inches 0.050 inches 0.042 inches 0.142 inches 0.050 inches 1000 B00M90AR7A
Usually ships in 2 to 4 weeks
$12.36
Prime Eligible
003 0.056 inches 3/16 inches 0.06 inches 0.056 inches 3/16 inches 0.06 inches 100 B0051XYL2E
In Stock (11)
$3.96
Prime Eligible
003 0.056 inches 3/16 inches 0.060 inches 0.056 inches 0.176 inches 0.060 inches 1000 B00M90AR7U
Usually ships in 2 to 4 weeks
$12.24
Prime Eligible
004 0.07 inches 13/64 inches 0.07 inches 0.07 inches 13/64 inches 0.07 inches 100 B0051XYL8S
In Stock (7)
$3.36
Prime Eligible
004 0.070 inches 13/64 inches 0.070 inches 0.070 inches 0.210 inches 0.070 inches 1000 B00M90AONW
Usually ships in 2 to 4 weeks
$12.24
Prime Eligible
005 0.101 inches 7/32 inches 0.07 inches 0.101 inches 7/32 inches 0.07 inches 100 B0051XYLAG
In Stock (7)
$4.04
Prime Eligible
005 0.101 inches 7/32 inches 0.070 inches 0.101 inches 0.241 inches 0.070 inches 1000 B00M90AP0E
Usually ships in 2 to 4 weeks
$11.72
Prime Eligible
006 0.114 inches 1/4 inches 0.07 inches 0.114 inches 1/4 inches 0.07 inches 100 B0051XYLDI
In Stock (15)
$4.46
Prime Eligible
006 0.114 inches 1/4 inches 0.070 inches 0.114 inches 0.254 inches 0.070 inches 1000 B00M90AOY6
Usually ships in 2 to 4 weeks
$11.98
Prime Eligible
007 0.145 inches 9/32 inches 0.07 inches 0.145 inches 9/32 inches 0.07 inches 100 B0051XYLI8
In Stock (10)
$2.32
Prime Eligible
007 0.145 inches 9/32 inches 0.070 inches 0.145 inches 0.285 inches 0.070 inches 1000 B00M90AOMS
Usually ships in 2 to 4 weeks
$11.98
Prime Eligible
008 0.176 inches 5/16 inches 0.07 inches 0.176 inches 5/16 inches 0.07 inches 100 B0051XYLK6
In Stock (4)
$4.52
Prime Eligible
008 0.176 inches 5/16 inches 0.070 inches 0.176 inches 0.316 inches 0.070 inches 1000 B00M90AOLY
In Stock (3)
$12.50
Prime Eligible
009 0.208 inches 11/32 inches 0.07 inches 0.208 inches 11/32 inches 0.07 inches 100 B0051XYLO2
In Stock (13)
$2.97
Prime Eligible
009 0.208 inches 11/32 inches 0.070 inches 0.208 inches 0.348 inches 0.070 inches 1000 B00M90ALOY
In Stock (4)
$12.08
Prime Eligible
010 0.239 inches 3/8 inches 0.07 inches 0.239 inches 3/8 inches 0.07 inches 100 B0051XYLSS
In Stock (2)
$4.55
Prime Eligible
010 0.239 inches 3/8 inches 0.070 inches 0.239 inches 0.379 inches 0.070 inches 1000 B00M90ALJE
Usually ships in 2 to 4 weeks
$11.00
Prime Eligible
Currently showing 1-20 of 630 Next »
Could not load your selection

We're sorry. An error occured when we tried to load your product family table. Rest assured, we're working to resolve the problem as soon as possible. Please refresh the page.


Product Features

  • Made of Buna-nitrile (also called Buna-N) for use with a variety of fluids from petroleum to aliphatic hydrocarbons
  • Durometer (hardness) of 90A for resistance to penetration
  • Round cross-section to provide a seal between cylindrical overlapping surfaces
  • For use across a wide temperature range from -30 degrees F/-34 degrees C to 250 degrees F/121 degrees C
  • Meets standards defined by Aerospace Standard AS568A

Product Details

  • Shipping Information: View shipping rates and policies
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B0052AU0W6
  • Average Customer Review: 4.4 out of 5 stars  See all reviews (14 customer reviews)
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

     Would you like to give feedback on images?


Product Description

This O-ring is made of black Buna-nitrile (Buna-N) and has a durometer of 90A. It has a round cross-section and can be used across a wide temperature range (-30 degrees F/-34 degrees C to 250 degrees F/121 degrees C). Designed for use in a wide variety of sealing applications, this Buna-nitrile O-ring meet standards defined by Aerospace Standard AS568A, which is the Aerospace Size Standard for O-rings.

Buna-nitrile can have high tensile strength, and has abrasion, tear, and compression set resistance. It is compatible for use with petroleum, hexafluoroacetone (HFA), hexafluoro-2-butyne (HFB) and hydrofluorocarbon (HFC) fluids, vegetable oil, alcohol, acids, and aliphatic hydrocarbons. Buna-nitrile is vulnerable to acetone, ethers, esters, ozone, sunlight and weathering, and should not be used in ozone-generating electric motors, welding equipment, or in applications with exposure to UV light.

The durometer hardness of this Buna O-ring is 90A. Durometers measure 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, a value of 0 indicates that a sample was completely penetrated, while a value of 100 shows no indentation in the sample. 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.

O-rings 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 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.


Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

1 of 1 people found the following review helpful By CJL on July 26, 2014
Size: 111Nominal Width: 0.103Overall Width: 0.103Outside Diameter: 5/8Inside Diameter: 0.424Nominal Inside Diameter: 0.424Number of Items: 100Nominal Outside Diameter: 5/8 Verified Purchase
Worked perfectly for my garden hose plastic quick disconnects. It sure beats buying the sets all over or. For just pennies, I can breath new life into the plethora of quick-disconnects around my yard. I fear I'd have to buy expensive brass fittings to get reasonable life from garden hose quick disconnects. Now, I've doubled their life for a couple of bucks and I have tons to spare. If you are in the same boat, you've GOT to get these.
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
1 of 1 people found the following review helpful By Costello on July 17, 2013
Size: 011Nominal Width: 0.07Overall Width: 0.07Outside Diameter: 7/16Inside Diameter: 0.301Nominal Inside Diameter: 0.301Number of Items: 100Nominal Outside Diameter: 7/16 Verified Purchase
Each one of these little circles of perfection represents everything I've ever dreamed of in an o-ring. I only needed one, but now am am rich with an over-abundance, having 99 extra for a nominal fee.
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
1 of 1 people found the following review helpful By Elizabeth Edmiston on April 17, 2014
Size: 015Nominal Width: 0.07Overall Width: 0.07Outside Diameter: 11/16Inside Diameter: 0.551Nominal Inside Diameter: 0.551Number of Items: 100Nominal Outside Diameter: 11/16 Verified Purchase
Worked great for my vape charms. Very sturdy and stretched like I needed them to. I will buy them again.
1 Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
By Scott Walter on May 12, 2014
Size: 426Nominal Width: 0.275Overall Width: 0.275Outside Diameter: 5-1/8Inside Diameter: 4.6Nominal Inside Diameter: 4.6Number of Items: 10Nominal Outside Diameter: 5-1/8 Verified Purchase
Packaged well and works as expected. Used a belts for my P20 scroll saw since the original ones are impossible to find now. This is a great bargain since one belt for the saw is typically $20. Thank you very much.
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
By Charles R. Elkins on February 3, 2013
Size: 322Nominal Width: 0.21Overall Width: 0.21Outside Diameter: 1-5/8Inside Diameter: 1.225Nominal Inside Diameter: 1.225Number of Items: 50Nominal Outside Diameter: 1-5/8 Verified Purchase
THis is good hard rubber, not stretchy as I feared. Serves the purpose. Had to buy a few more than needed but they were cheap
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
By Matt on January 27, 2013
Size: 001Nominal Width: 0.04Overall Width: 0.04Outside Diameter: 3/32Inside Diameter: 0.029Nominal Inside Diameter: 0.029Number of Items: 100Nominal Outside Diameter: 3/32 Verified Purchase
The o-rings I ordered are in fact tough buna 90a. Most of the sizes are fairly priced, and the o-rings themselves quality. Recommended
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
By Roncerr on December 16, 2012
Size: 453Nominal Width: 0.275Overall Width: 0.275Outside Diameter: 12-1/2Inside Diameter: 11.975Nominal Inside Diameter: 11.975Number of Items: 2Nominal Outside Diameter: 12-1/2 Verified Purchase
453 o-ring should have 12" ID per description, but it actually was more like 14". Had to return it. Could not order another since any replacement would have the same order number and likely the same problem.
2 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again