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).
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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| 249S70 |
IntegrationID
N/A 192916 |
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 123.42 mm4.859 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.035 in0.89 mmNumeric mm | Size Reference - AS568 N/A -249 | 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. |
| 250S70 |
IntegrationID
N/A 192917 |
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 126.59 mm4.984 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.035 in0.89 mmNumeric mm | Size Reference - AS568 N/A -250 | 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. |
| 251S70 |
IntegrationID
N/A 192918 |
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 129.77 mm5.109 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.035 in0.89 mmNumeric mm | Size Reference - AS568 N/A -251 | 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. |
| 252S70 |
IntegrationID
N/A 192919 |
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 132.94 mm5.234 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.035 in0.89 mmNumeric mm | Size Reference - AS568 N/A -252 | 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. |
| 253S70 |
IntegrationID
N/A 192920 |
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 136.12 mm5.359 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.035 in0.89 mmNumeric mm | Size Reference - AS568 N/A -253 | 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. |
| 254S70 |
IntegrationID
N/A 192921 |
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 139.29 mm5.484 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.035 in0.89 mmNumeric mm | Size Reference - AS568 N/A -254 | 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. |
| 255S70 |
IntegrationID
N/A 192922 |
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 142.47 mm5.609 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.035 in0.89 mmNumeric mm | Size Reference - AS568 N/A -255 | 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. |
| 256S70 |
IntegrationID
N/A 192923 |
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 145.64 mm5.734 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.035 in0.89 mmNumeric mm | Size Reference - AS568 N/A -256 | 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. |
| 257S70 |
IntegrationID
N/A 192924 |
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 148.82 mm5.859 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.035 in0.89 mmNumeric mm | Size Reference - AS568 N/A -257 | 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. |
| 258S70 |
IntegrationID
N/A 192925 |
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 151.99 mm5.984 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.035 in0.89 mmNumeric mm | Size Reference - AS568 N/A -258 | 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. |
| 259S70 |
IntegrationID
N/A 192926 |
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 158.34 mm6.234 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.040 in1.02 mmNumeric mm | Size Reference - AS568 N/A -259 | 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. |
| 260S70 |
IntegrationID
N/A 192927 |
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 164.69 mm6.484 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.040 in1.02 mmNumeric mm | Size Reference - AS568 N/A -260 | 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. |
| 261S70 |
IntegrationID
N/A 192928 |
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 171.04 mm6.734 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.040 in1.02 mmNumeric mm | Size Reference - AS568 N/A -261 | 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. |
| 262S70 |
IntegrationID
N/A 192929 |
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 177.39 mm6.984 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.040 in1.02 mmNumeric mm | Size Reference - AS568 N/A -262 | 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. |
| 263S70 |
IntegrationID
N/A 192930 |
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 183.74 mm7.234 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.045 in1.14 mmNumeric mm | Size Reference - AS568 N/A -263 | 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. |
| 264S70 |
IntegrationID
N/A 192931 |
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 190.09 mm7.484 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.045 in1.14 mmNumeric mm | Size Reference - AS568 N/A -264 | 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. |
| 265S70 |
IntegrationID
N/A 192932 |
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 196.44 mm7.734 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.045 in1.14 mmNumeric mm | Size Reference - AS568 N/A -265 | 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. |
| 266S70 |
IntegrationID
N/A 192933 |
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 202.79 mm7.984 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.045 in1.14 mmNumeric mm | Size Reference - AS568 N/A -266 | 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. |
| 267S70 |
IntegrationID
N/A 192934 |
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 209.14 mm8.234 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.050 in1.25 mmNumeric mm | Size Reference - AS568 N/A -267 | 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. |
| 268S70 |
IntegrationID
N/A 192935 |
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 215.49 mm8.484 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.050 in1.25 mmNumeric mm | Size Reference - AS568 N/A -268 | 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. |
| 269S70 |
IntegrationID
N/A 192936 |
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 221.84 mm8.734 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.050 in1.25 mmNumeric mm | Size Reference - AS568 N/A -269 | 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. |
| 270S70 |
IntegrationID
N/A 192937 |
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 228.19 mm8.984 in | Cross Section Tolerance +/- N/A 0.004 in0.10 mmNumeric | Inside Diameter Tolerance +/- N/A 0.050 in1.25 mmNumeric mm | Size Reference - AS568 N/A -270 | 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. |
| 271S70 |
IntegrationID
N/A 192938 |
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 234.54 mm9.234 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 -271 | 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. |
| 272S70 |
IntegrationID
N/A 192939 |
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 240.89 mm9.484 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 -272 | 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. |
| 273S70 |
IntegrationID
N/A 192940 |
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 247.24 mm9.734 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 -273 | 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. |
