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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 274S70 |
IntegrationID
N/A 192941 |
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 253.59 mm9.984 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.055 in1.40 mmNumeric mm | Size Reference - AS568 N/A -274 | 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. |
| 275S70 |
IntegrationID
N/A 192942 |
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 266.29 mm10.484 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.055 in1.40 mmNumeric mm | Size Reference - AS568 N/A -275 | 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. |
| 276S70 |
IntegrationID
N/A 192943 |
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 278.99 mm10.984 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.065 in1.65 mmNumeric mm | Size Reference - AS568 N/A -276 | 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. |
| 277S70 |
IntegrationID
N/A 192944 |
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 291.69 mm11.484 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.065 in1.65 mmNumeric mm | Size Reference - AS568 N/A -277 | 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. |
| 278S70 |
IntegrationID
N/A 192945 |
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 304.39 mm11.984 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.065 in1.65 mmNumeric mm | Size Reference - AS568 N/A -278 | 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. |
| 279S70 |
IntegrationID
N/A 192946 |
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 329.79 mm12.984 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.065 in1.65 mmNumeric mm | Size Reference - AS568 N/A -279 | 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. |
| 280S70 |
IntegrationID
N/A 192947 |
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 355.19 mm13.984 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.065 in1.65 mmNumeric mm | Size Reference - AS568 N/A -280 | 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. |
| 281S70 |
IntegrationID
N/A 192948 |
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 380.59 mm14.984 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.065 in1.65 mmNumeric mm | Size Reference - AS568 N/A -281 | 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. |
| 282S70 |
IntegrationID
N/A 192949 |
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 405.26 mm15.955 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.075 in1.90 mmNumeric mm | Size Reference - AS568 N/A -282 | 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. |
| 283S70 |
IntegrationID
N/A 192950 |
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 430.66 mm16.955 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.080 in2.05 mmNumeric mm | Size Reference - AS568 N/A -283 | 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. |
| 284S70 |
IntegrationID
N/A 192951 |
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 456.06 mm17.955 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.085 in2.15 mmNumeric mm | Size Reference - AS568 N/A -284 | 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. |
| 309S70 |
IntegrationID
N/A 192952 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.210 in5.33 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 10.46 mm0.412 in | Cross Section Tolerance +/- N/A 0.005 in0.12 mmNumeric | Inside Diameter Tolerance +/- N/A 0.005 in0.12 mmNumeric mm | Size Reference - AS568 N/A -309 | 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. |
| 310S70 |
IntegrationID
N/A 192953 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.210 in5.33 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 12.07 mm0.475 in | Cross Section Tolerance +/- N/A 0.005 in0.12 mmNumeric | Inside Diameter Tolerance +/- N/A 0.005 in0.12 mmNumeric mm | Size Reference - AS568 N/A -310 | 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. |
| 311S70 |
IntegrationID
N/A 192954 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.210 in5.33 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 13.64 mm0.537 in | Cross Section Tolerance +/- N/A 0.005 in0.12 mmNumeric | Inside Diameter Tolerance +/- N/A 0.007 in0.17 mmNumeric mm | Size Reference - AS568 N/A -311 | 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. |
| 312S70 |
IntegrationID
N/A 192955 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.210 in5.33 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 15.24 mm0.600 in | Cross Section Tolerance +/- N/A 0.005 in0.12 mmNumeric | Inside Diameter Tolerance +/- N/A 0.009 in0.22 mmNumeric mm | Size Reference - AS568 N/A -312 | 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. |
| 313S70 |
IntegrationID
N/A 192956 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.210 in5.33 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 16.81 mm0.662 in | Cross Section Tolerance +/- N/A 0.005 in0.12 mmNumeric | Inside Diameter Tolerance +/- N/A 0.009 in0.22 mmNumeric mm | Size Reference - AS568 N/A -313 | 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. |
| 314S70 |
IntegrationID
N/A 192957 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.210 in5.33 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 18.42 mm0.725 in | Cross Section Tolerance +/- N/A 0.005 in0.12 mmNumeric | Inside Diameter Tolerance +/- N/A 0.010 in0.25 mmNumeric mm | Size Reference - AS568 N/A -314 | 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. |
| 315S70 |
IntegrationID
N/A 192958 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.210 in5.33 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 19.99 mm0.787 in | Cross Section Tolerance +/- N/A 0.005 in0.12 mmNumeric | Inside Diameter Tolerance +/- N/A 0.010 in0.25 mmNumeric mm | Size Reference - AS568 N/A -315 | 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. |
| 316S70 |
IntegrationID
N/A 192959 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.210 in5.33 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 21.59 mm0.850 in | Cross Section Tolerance +/- N/A 0.005 in0.12 mmNumeric | Inside Diameter Tolerance +/- N/A 0.010 in0.25 mmNumeric mm | Size Reference - AS568 N/A -316 | 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. |
| 317S70 |
IntegrationID
N/A 192960 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.210 in5.33 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 23.16 mm0.912 in | Cross Section Tolerance +/- N/A 0.005 in0.12 mmNumeric | Inside Diameter Tolerance +/- N/A 0.010 in0.25 mmNumeric mm | Size Reference - AS568 N/A -317 | 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. |
| 318S70 |
IntegrationID
N/A 192961 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.210 in5.33 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 24.77 mm0.975 in | Cross Section Tolerance +/- N/A 0.005 in0.12 mmNumeric | Inside Diameter Tolerance +/- N/A 0.010 in0.25 mmNumeric mm | Size Reference - AS568 N/A -318 | 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. |
| 319S70 |
IntegrationID
N/A 192962 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.210 in5.33 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 26.34 mm1.037 in | Cross Section Tolerance +/- N/A 0.005 in0.12 mmNumeric | Inside Diameter Tolerance +/- N/A 0.010 in0.25 mmNumeric mm | Size Reference - AS568 N/A -319 | 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. |
| 320S70 |
IntegrationID
N/A 192963 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.210 in5.33 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 27.94 mm1.100 in | Cross Section Tolerance +/- N/A 0.005 in0.12 mmNumeric | Inside Diameter Tolerance +/- N/A 0.012 in0.30 mmNumeric mm | Size Reference - AS568 N/A -320 | 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. |
| 321S70 |
IntegrationID
N/A 192964 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.210 in5.33 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 29.51 mm1.162 in | Cross Section Tolerance +/- N/A 0.005 in0.12 mmNumeric | Inside Diameter Tolerance +/- N/A 0.012 in0.30 mmNumeric mm | Size Reference - AS568 N/A -321 | 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. |
| 322S70 |
IntegrationID
N/A 192965 |
Type N/A Long Text | Material N/A Long Text | Cross Section Width N/A 0.210 in5.33 mmNumeric mm | Durometer N/A 70 | Inside Diameter N/A 31.12 mm1.225 in | Cross Section Tolerance +/- N/A 0.005 in0.12 mmNumeric | Inside Diameter Tolerance +/- N/A 0.012 in0.30 mmNumeric mm | Size Reference - AS568 N/A -322 | 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. |
