AS568 Silicone 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. For more information, please see: Comparison Properties Chart, PTFE Encapsulated O-rings, Material Shelf Life, and O-ring Groove Design Chart.
This elastomer possesses mechanical properties similar to Viton®, with the exception of its slightly lower compression set resistance. It is more suitable for sensitive applications where lighter compressive forces are applied to energize the seal. This core has a Shore A hardness of 70 but it also offers a broader operating temperature range of -80°F to +500°F. (-62°C to +260°C).
This elastomer possesses mechanical properties similar to Viton®, with the exception of its slightly lower compression set resistance. It is more suitable for sensitive applications where lighter compressive forces are applied to energize the seal. This core has a Shore A hardness of 70 but it also offers a broader operating temperature range of -80°F to +500°F. (-62°C to +260°C).
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Cross Section Width (in)
Cross Section Width (mm)
Cross Section Width (mm)
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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224S70 224S70/Asset/oring71.jpg |
IntegrationID
N/A 192891 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 44.04 mm1.734 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.015 in0.38 mmNumeric mm | Size Reference - AS568 N/A -224 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
225S70 225S70/Asset/oring71.jpg |
IntegrationID
N/A 192892 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 47.22 mm1.859 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.018 in0.46 mmNumeric mm | Size Reference - AS568 N/A -225 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
226S70 226S70/Asset/oring71.jpg |
IntegrationID
N/A 192893 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 50.39 mm1.984 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.018 in0.46 mmNumeric mm | Size Reference - AS568 N/A -226 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
227S70 227S70/Asset/oring71.jpg |
IntegrationID
N/A 192894 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 53.57 mm2.109 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.018 in0.46 mmNumeric mm | Size Reference - AS568 N/A -227 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
228S70 228S70/Asset/oring71.jpg |
IntegrationID
N/A 192895 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 56.74 mm2.234 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.020 in0.50 mmNumeric mm | Size Reference - AS568 N/A -228 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
229S70 229S70/Asset/oring71.jpg |
IntegrationID
N/A 192896 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 59.92 mm2.359 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.020 in0.50 mmNumeric mm | Size Reference - AS568 N/A -229 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
230S70 230S70/Asset/oring71.jpg |
IntegrationID
N/A 192897 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 63.09 mm2.484 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.020 in0.50 mmNumeric mm | Size Reference - AS568 N/A -230 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
231S70 231S70/Asset/oring71.jpg |
IntegrationID
N/A 192898 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 66.27 mm2.609 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.020 in0.50 mmNumeric mm | Size Reference - AS568 N/A -231 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
232S70 232S70/Asset/oring71.jpg |
IntegrationID
N/A 192899 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 69.44 mm2.734 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.024 in0.61 mmNumeric mm | Size Reference - AS568 N/A -232 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
233S70 233S70/Asset/oring71.jpg |
IntegrationID
N/A 192900 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 72.62 mm2.859 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.024 in0.61 mmNumeric mm | Size Reference - AS568 N/A -233 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
234S70 234S70/Asset/oring71.jpg |
IntegrationID
N/A 192901 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 75.79 mm2.984 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.024 in0.61 mmNumeric mm | Size Reference - AS568 N/A -234 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
235S70 235S70/Asset/oring71.jpg |
IntegrationID
N/A 192902 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 78.97 mm3.109 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.024 in0.61 mmNumeric mm | Size Reference - AS568 N/A -235 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
236S70 236S70/Asset/oring71.jpg |
IntegrationID
N/A 192903 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 82.14 mm3.234 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.024 in0.61 mmNumeric mm | Size Reference - AS568 N/A -236 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
237S70 237S70/Asset/oring71.jpg |
IntegrationID
N/A 192904 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 85.32 mm3.359 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.024 in0.61 mmNumeric mm | Size Reference - AS568 N/A -237 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
238S70 238S70/Asset/oring71.jpg |
IntegrationID
N/A 192905 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 88.49 mm3.484 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.024 in0.61 mmNumeric mm | Size Reference - AS568 N/A -238 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
239S70 239S70/Asset/oring71.jpg |
IntegrationID
N/A 192906 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 91.67 mm3.609 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.028 in0.71 mmNumeric mm | Size Reference - AS568 N/A -239 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
240S70 240S70/Asset/oring71.jpg |
IntegrationID
N/A 192907 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 94.84 mm3.734 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.028 in0.71 mmNumeric mm | Size Reference - AS568 N/A -240 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
241S70 241S70/Asset/oring71.jpg |
IntegrationID
N/A 192908 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 98.02 mm3.859 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.028 in0.71 mmNumeric mm | Size Reference - AS568 N/A -241 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
242S70 242S70/Asset/oring71.jpg |
IntegrationID
N/A 192909 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 101.19 mm3.984 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.028 in0.71 mmNumeric mm | Size Reference - AS568 N/A -242 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
243S70 243S70/Asset/oring71.jpg |
IntegrationID
N/A 192910 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 104.37 mm4.109 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.028 in0.71 mmNumeric mm | Size Reference - AS568 N/A -243 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
244S70 244S70/Asset/oring71.jpg |
IntegrationID
N/A 192911 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 107.54 mm4.234 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.030 in0.76 mmNumeric mm | Size Reference - AS568 N/A -244 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
245S70 245S70/Asset/oring71.jpg |
IntegrationID
N/A 192912 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 110.72 mm4.359 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.030 in0.76 mmNumeric mm | Size Reference - AS568 N/A -245 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
246S70 246S70/Asset/oring71.jpg |
IntegrationID
N/A 192913 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 113.89 mm4.484 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.030 in0.76 mmNumeric mm | Size Reference - AS568 N/A -246 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
247S70 247S70/Asset/oring71.jpg |
IntegrationID
N/A 192914 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 117.07 mm4.609 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.030 in0.76 mmNumeric mm | Size Reference - AS568 N/A -247 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
248S70 248S70/Asset/oring71.jpg |
IntegrationID
N/A 192915 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.139 in3.53 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 120.24 mm4.734 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.030 in0.76 mmNumeric mm | Size Reference - AS568 N/A -248 | Alternate P/N N/A | Units of Measure N/A Long Text | Tube Size O.D. N/A Numeric | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |