AS568 Polyurethane O-Rings
Standard O-Rings (AS568)
Standard O-Rings are available in 369 sizes as set up by the Aerospace Standard 568 published by the Society of Automotive Engineers. These sizes are designated by dash numbers shown on the 568 DASH Chart and are standardized by imperial dimensions. Standard O-Rings are specified by their inside diameter and cross section width. AS568 is the most commonly used standard in the U.S. for aerospace, automotive and general industrial applications.
Polyurethane is also known as urethane, cast urethan and millable urethane. Exceptional tensile strength. Abrasion and low temperature resistance. Typical applications include hydraulic seals, gaskets, diaphragms, hoses, and wheels for skate boards.
For more information, please see: Comparison Properties Chart, PTFE Encapsulated O-rings, Material Shelf Life, and O-ring Groove Design Chart.
Polyurethane is also known as urethane, cast urethan and millable urethane. Exceptional tensile strength. Abrasion and low temperature resistance. Typical applications include hydraulic seals, gaskets, diaphragms, hoses, and wheels for skate boards.
For more information, please see: Comparison Properties Chart, PTFE Encapsulated O-rings, Material Shelf Life, and O-ring Groove Design Chart.
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Cross Section Width (in)
Cross Section Width (mm)
Durometer
Inside Diameter (mm)
Inside Diameter (in)
Item # |
IntegrationID |
Type |
Material |
Cross Section Width |
Durometer |
Inside Diameter |
Cross Section Tolerance +/- |
Inside Diameter Tolerance +/- |
Size Reference - AS568 |
Alternate P/N |
Units of Measure |
Tube Size O.D. |
Call for a Quote |
O-Ring Industries |
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| -903 Polyurethane-70 -903 Polyurethane-70/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.064 in | Durometer N/A 70 | Inside Diameter N/A 0.301 in | Cross Section Tolerance +/- N/A 0.003 in | Inside Diameter Tolerance +/- N/A 0.005 in | Size Reference - AS568 N/A -903 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 3/16 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | |
| -904 Polyurethane-70 -904 Polyurethane-70/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.072 in | Durometer N/A 70 | Inside Diameter N/A 0.351 in | Cross Section Tolerance +/- N/A 0.003 in | Inside Diameter Tolerance +/- N/A 0.005 in | Size Reference - AS568 N/A -904 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 1/4 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | |
| -905 Polyurethane-70 -905 Polyurethane-70/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.072 in | Durometer N/A 70 | Inside Diameter N/A 0.414 in | Cross Section Tolerance +/- N/A 0.003 in | Inside Diameter Tolerance +/- N/A 0.005 in | Size Reference - AS568 N/A -905 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 5/16 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | |
| -906 Polyurethane-70 -906 Polyurethane-70/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.078 in | Durometer N/A 70 | Inside Diameter N/A 0.468 in | Cross Section Tolerance +/- N/A 0.003 in | Inside Diameter Tolerance +/- N/A 0.005 in | Size Reference - AS568 N/A -906 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 3/8 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | |
| -907 Polyurethane-70 -907 Polyurethane-70/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.082 in | Durometer N/A 70 | Inside Diameter N/A 0.530 in | Cross Section Tolerance +/- N/A 0.003 in | Inside Diameter Tolerance +/- N/A 0.005 in | Size Reference - AS568 N/A -907 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 7/16 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | |
| -908 Polyurethane-70 -908 Polyurethane-70/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.087 in | Durometer N/A 70 | Inside Diameter N/A 0.644 in | Cross Section Tolerance +/- N/A 0.003 in | Inside Diameter Tolerance +/- N/A 0.009 in | Size Reference - AS568 N/A -908 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 1/2 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | |
| -909 Polyurethane-70 -909 Polyurethane-70/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.097 in | Durometer N/A 70 | Inside Diameter N/A 0.706 in | Cross Section Tolerance +/- N/A 0.003 in | Inside Diameter Tolerance +/- N/A 0.009 in | Size Reference - AS568 N/A -909 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 9/16 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries.v | |
| -910 Polyurethane-70 -910 Polyurethane-70/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.097 in | Durometer N/A 70 | Inside Diameter N/A 0.755 in | Cross Section Tolerance +/- N/A 0.003 in | Inside Diameter Tolerance +/- N/A 0.009 in | Size Reference - AS568 N/A -910 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 5/8 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | |
| -911 Polyurethane-70 -911 Polyurethane-70/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.116 in | Durometer N/A 70 | Inside Diameter N/A 0.863 in | Cross Section Tolerance +/- N/A 0.004 in | Inside Diameter Tolerance +/- N/A 0.009 in | Size Reference - AS568 N/A -911 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 11/16 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | |
| -912 Polyurethane-70 -912 Polyurethane-70/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.116 in | Durometer N/A 70 | Inside Diameter N/A 0.924 in | Cross Section Tolerance +/- N/A 0.004 in | Inside Diameter Tolerance +/- N/A 0.009 in | Size Reference - AS568 N/A -912 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 3/4 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | |
| -913 Polyurethane-70 -913 Polyurethane-70/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.116 in | Durometer N/A 70 | Inside Diameter N/A 0.986 in | Cross Section Tolerance +/- N/A 0.004 in | Inside Diameter Tolerance +/- N/A 0.01 in | Size Reference - AS568 N/A -913 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 13/16 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | |
| -914 Polyurethane-70 -914 Polyurethane-70/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.116 in | Durometer N/A 70 | Inside Diameter N/A 1.047 in | Cross Section Tolerance +/- N/A 0.004 in | Inside Diameter Tolerance +/- N/A 0.01 in | Size Reference - AS568 N/A -914 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 7/8 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | |
| -916 Polyurethane-70 -916 Polyurethane-70/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.116 in | Durometer N/A 70 | Inside Diameter N/A 1.171 in | Cross Section Tolerance +/- N/A 0.004 in | Inside Diameter Tolerance +/- N/A 0.01 in | Size Reference - AS568 N/A -916 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 1 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | |
| -918 Polyurethane-70 -918 Polyurethane-70/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.116 in | Durometer N/A 70 | Inside Diameter N/A 1.355 in | Cross Section Tolerance +/- N/A 0.004 in | Inside Diameter Tolerance +/- N/A 0.012 in | Size Reference - AS568 N/A -918 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 1-1/8 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | |
| -920 Polyurethane-70 -920 Polyurethane-70/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.118 in | Durometer N/A 70 | Inside Diameter N/A 1.475 in | Cross Section Tolerance +/- N/A 0.004 in | Inside Diameter Tolerance +/- N/A 0.014 in | Size Reference - AS568 N/A -920 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 1-1/4 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | |
| -924 Polyurethane-70 -924 Polyurethane-70/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.118 in | Durometer N/A 70 | Inside Diameter N/A 1.720 in | Cross Section Tolerance +/- N/A 0.004 in | Inside Diameter Tolerance +/- N/A 0.014 in | Size Reference - AS568 N/A -924 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 1-1/2 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | |
| -928 Polyurethane-70 -928 Polyurethane-70/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.118 in | Durometer N/A 70 | Inside Diameter N/A 2.090 in | Cross Section Tolerance +/- N/A 0.004 in | Inside Diameter Tolerance +/- N/A 0.018 in | Size Reference - AS568 N/A -928 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 1-3/4 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | |
| -932 Polyurethane-70 -932 Polyurethane-70/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.118 in | Durometer N/A 70 | Inside Diameter N/A 2.337 in | Cross Section Tolerance +/- N/A 0.004 in | Inside Diameter Tolerance +/- N/A 0.018 in | Size Reference - AS568 N/A -932 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 2 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | |
| -901 Polyurethane-75 -901 Polyurethane-75/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.056 in | Durometer N/A 75 | Inside Diameter N/A 0.185 in | Cross Section Tolerance +/- N/A 0.003 in | Inside Diameter Tolerance +/- N/A 0.005 in | Size Reference - AS568 N/A -901 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 3/32 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | |
| -902 Polyurethane-75 -902 Polyurethane-75/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.064 in | Durometer N/A 75 | Inside Diameter N/A 0.239 in | Cross Section Tolerance +/- N/A 0.003 in | Inside Diameter Tolerance +/- N/A 0.005 in | Size Reference - AS568 N/A -902 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 1/8 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | |
| -903 Polyurethane-75 -903 Polyurethane-75/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.064 in | Durometer N/A 75 | Inside Diameter N/A 0.301 in | Cross Section Tolerance +/- N/A 0.003 in | Inside Diameter Tolerance +/- N/A 0.005 in | Size Reference - AS568 N/A -903 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 3/16 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries.v | |
| -904 Polyurethane-75 -904 Polyurethane-75/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.072 in | Durometer N/A 75 | Inside Diameter N/A 0.351 in | Cross Section Tolerance +/- N/A 0.003 in | Inside Diameter Tolerance +/- N/A 0.005 in | Size Reference - AS568 N/A -904 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 1/4 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | |
| -905 Polyurethane-75 -905 Polyurethane-75/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.072 in | Durometer N/A 75 | Inside Diameter N/A 0.414 in | Cross Section Tolerance +/- N/A 0.003 in | Inside Diameter Tolerance +/- N/A 0.005 in | Size Reference - AS568 N/A -905 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 5/16 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | |
| -906 Polyurethane-75 -906 Polyurethane-75/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.078 in | Durometer N/A 75 | Inside Diameter N/A 0.468 in | Cross Section Tolerance +/- N/A 0.003 in | Inside Diameter Tolerance +/- N/A 0.005 in | Size Reference - AS568 N/A -906 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 3/8 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | |
| -907 Polyurethane-75 -907 Polyurethane-75/Asset/oring71.jpg | Type N/A AS568 Standard O-Rings | Material N/A Polyurethane | Cross Section Width N/A 0.082 in | Durometer N/A 75 | Inside Diameter N/A 0.530 in | Cross Section Tolerance +/- N/A 0.003 in | Inside Diameter Tolerance +/- N/A 0.005 in | Size Reference - AS568 N/A -907 | Alternate P/N N/A | Units of Measure N/A Imperial | Tube Size O.D. N/A 7/16 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. |
