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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177S70 177S70/Asset/oring71.jpg |
IntegrationID
N/A 192866 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.103 in2.62 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 240.97 mm9.487 in | Cross Section Tolerance +/- N/A 0.003 in0.08 mmNumeric | Inside Diameter Tolerance +/- N/A 0.055 in1.40 mmNumeric mm | Size Reference - AS568 N/A -177 | 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. |
178S70 178S70/Asset/oring71.jpg |
IntegrationID
N/A 192867 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.103 in2.62 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 247.32 mm9.737 in | Cross Section Tolerance +/- N/A 0.003 in0.08 mmNumeric | Inside Diameter Tolerance +/- N/A 0.055 in1.40 mmNumeric mm | Size Reference - AS568 N/A -178 | 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. |
201S70 201S70/Asset/oring71.jpg |
IntegrationID
N/A 192868 |
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 4.34 mm0.171 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.005 in0.12 mmNumeric mm | Size Reference - AS568 N/A -201 | 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. |
202S70 202S70/Asset/oring71.jpg |
IntegrationID
N/A 192869 |
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 5.94 mm0.234 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.005 in0.12 mmNumeric mm | Size Reference - AS568 N/A -202 | 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. |
203S70 203S70/Asset/oring71.jpg |
IntegrationID
N/A 192870 |
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 7.52 mm0.296 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.005 in0.12 mmNumeric mm | Size Reference - AS568 N/A -203 | 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. |
204S70 204S70/Asset/oring71.jpg |
IntegrationID
N/A 192871 |
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 9.12 mm0.359 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.005 in0.12 mmNumeric mm | Size Reference - AS568 N/A -204 | 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. |
205S70 205S70/Asset/oring71.jpg |
IntegrationID
N/A 192872 |
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 10.69 mm0.421 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.005 in0.12 mmNumeric mm | Size Reference - AS568 N/A -205 | 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. |
206S70 206S70/Asset/oring71.jpg |
IntegrationID
N/A 192873 |
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 12.29 mm0.484 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.005 in0.12 mmNumeric mm | Size Reference - AS568 N/A -206 | 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. |
207S70 207S70/Asset/oring71.jpg |
IntegrationID
N/A 192874 |
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 13.87 mm0.546 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.007 in0.17 mmNumeric mm | Size Reference - AS568 N/A -207 | 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. |
208S70 208S70/Asset/oring71.jpg |
IntegrationID
N/A 192875 |
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 15.47 mm0.609 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.009 in0.23 mmNumeric mm | Size Reference - AS568 N/A -208 | 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. |
209S70 209S70/Asset/oring71.jpg |
IntegrationID
N/A 192876 |
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 17.04 mm0.671 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.009 in0.23 mmNumeric mm | Size Reference - AS568 N/A -209 | 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. |
210S70 210S70/Asset/oring71.jpg |
IntegrationID
N/A 192877 |
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 18.64 mm0.734 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.010 in0.25 mmNumeric mm | Size Reference - AS568 N/A -210 | 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. |
211S70 211S70/Asset/oring71.jpg |
IntegrationID
N/A 192878 |
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 20.22 mm0.796 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.010 in0.25 mmNumeric mm | Size Reference - AS568 N/A -211 | 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. |
212S70 212S70/Asset/oring71.jpg |
IntegrationID
N/A 192879 |
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 21.82 mm0.859 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.010 in0.25 mmNumeric mm | Size Reference - AS568 N/A -212 | 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. |
213S70 213S70/Asset/oring71.jpg |
IntegrationID
N/A 192880 |
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 23.39 mm0.921 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.010 in0.25 mmNumeric mm | Size Reference - AS568 N/A -213 | 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. |
214S70 214S70/Asset/oring71.jpg |
IntegrationID
N/A 192881 |
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 24.99 mm0.984 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.010 in0.25 mmNumeric mm | Size Reference - AS568 N/A -214 | 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. |
215S70 215S70/Asset/oring71.jpg |
IntegrationID
N/A 192882 |
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 26.57 mm1.046 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.010 in0.25 mmNumeric mm | Size Reference - AS568 N/A -215 | 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. |
216S70 216S70/Asset/oring71.jpg |
IntegrationID
N/A 192883 |
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 28.17 mm1.109 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.012 in0.30 mmNumeric mm | Size Reference - AS568 N/A -216 | 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. |
217S70 217S70/Asset/oring71.jpg |
IntegrationID
N/A 192884 |
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 29.74 mm1.171 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.012 in0.30 mmNumeric mm | Size Reference - AS568 N/A -217 | 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. |
218S70 218S70/Asset/oring71.jpg |
IntegrationID
N/A 192885 |
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 31.34 mm1.234 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.012 in0.30 mmNumeric mm | Size Reference - AS568 N/A -218 | 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. |
219S70 219S70/Asset/oring71.jpg |
IntegrationID
N/A 192886 |
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 32.92 mm1.296 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.012 in0.30 mmNumeric mm | Size Reference - AS568 N/A -219 | 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. |
220S70 220S70/Asset/oring71.jpg |
IntegrationID
N/A 192887 |
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 34.52 mm1.359 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.012 in0.30 mmNumeric mm | Size Reference - AS568 N/A -220 | 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. |
221S70 221S70/Asset/oring71.jpg |
IntegrationID
N/A 192888 |
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 36.09 mm1.421 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.012 in0.30 mmNumeric mm | Size Reference - AS568 N/A -221 | 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. |
222S70 222S70/Asset/oring71.jpg |
IntegrationID
N/A 192889 |
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 37.69 mm1.484 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 -222 | 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. |
223S70 223S70/Asset/oring71.jpg |
IntegrationID
N/A 192890 |
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 40.87 mm1.609 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 -223 | 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. |