AS568 400 Series
AS568 400-series dash numbers 425–475 with 0.210 inch (5.33 mm) cross section for large flanges and high-volume static seals.
Cross section 0.21" (5.33 mm) · Dash 425–475 · 51 sizes
Series Overview
AS568 400 Series groups 51 AS568 dash numbers (425–475) sharing a 0.21" (5.33 mm) cross section. Inside diameters span 4.475" to 26.325" ID (113.7–668.6 mm). These sizes dominate large flanges, pipelines, construction equipment because the 5.33 mm cord diameter balances conformability, extrusion resistance, and groove width in standard SAE and industrial glands. Select a dash number below or use the size converter to cross-reference ISO 3601 and JIS B 2401 equivalents.
| Dash Number | ID (inch) | CS (inch) | ID (mm) | CS (mm) | Action |
|---|---|---|---|---|---|
| AS568-425 | 4.475 | 0.210 | 113.66 | 5.33 | View |
| AS568-426 | 4.912 | 0.210 | 124.76 | 5.33 | View |
| AS568-427 | 5.349 | 0.210 | 135.86 | 5.33 | View |
| AS568-428 | 5.786 | 0.210 | 146.96 | 5.33 | View |
| AS568-429 | 6.223 | 0.210 | 158.06 | 5.33 | View |
| AS568-430 | 6.660 | 0.210 | 169.16 | 5.33 | View |
| AS568-431 | 7.097 | 0.210 | 180.26 | 5.33 | View |
| AS568-432 | 7.534 | 0.210 | 191.36 | 5.33 | View |
| AS568-433 | 7.971 | 0.210 | 202.46 | 5.33 | View |
| AS568-434 | 8.408 | 0.210 | 213.56 | 5.33 | View |
| AS568-435 | 8.845 | 0.210 | 224.66 | 5.33 | View |
| AS568-436 | 9.282 | 0.210 | 235.76 | 5.33 | View |
| AS568-437 | 9.719 | 0.210 | 246.86 | 5.33 | View |
| AS568-438 | 10.156 | 0.210 | 257.96 | 5.33 | View |
| AS568-439 | 10.593 | 0.210 | 269.06 | 5.33 | View |
| AS568-440 | 11.030 | 0.210 | 280.16 | 5.33 | View |
| AS568-441 | 11.467 | 0.210 | 291.26 | 5.33 | View |
| AS568-442 | 11.904 | 0.210 | 302.36 | 5.33 | View |
| AS568-443 | 12.341 | 0.210 | 313.46 | 5.33 | View |
| AS568-444 | 12.778 | 0.210 | 324.56 | 5.33 | View |
| AS568-445 | 13.215 | 0.210 | 335.66 | 5.33 | View |
| AS568-446 | 13.652 | 0.210 | 346.76 | 5.33 | View |
| AS568-447 | 14.089 | 0.210 | 357.86 | 5.33 | View |
| AS568-448 | 14.526 | 0.210 | 368.96 | 5.33 | View |
| AS568-449 | 14.963 | 0.210 | 380.06 | 5.33 | View |
| AS568-450 | 15.400 | 0.210 | 391.16 | 5.33 | View |
| AS568-451 | 15.837 | 0.210 | 402.26 | 5.33 | View |
| AS568-452 | 16.274 | 0.210 | 413.36 | 5.33 | View |
| AS568-453 | 16.711 | 0.210 | 424.46 | 5.33 | View |
| AS568-454 | 17.148 | 0.210 | 435.56 | 5.33 | View |
| AS568-455 | 17.585 | 0.210 | 446.66 | 5.33 | View |
| AS568-456 | 18.022 | 0.210 | 457.76 | 5.33 | View |
| AS568-457 | 18.459 | 0.210 | 468.86 | 5.33 | View |
| AS568-458 | 18.896 | 0.210 | 479.96 | 5.33 | View |
| AS568-459 | 19.333 | 0.210 | 491.06 | 5.33 | View |
| AS568-460 | 19.770 | 0.210 | 502.16 | 5.33 | View |
| AS568-461 | 20.207 | 0.210 | 513.26 | 5.33 | View |
| AS568-462 | 20.644 | 0.210 | 524.36 | 5.33 | View |
| AS568-463 | 21.081 | 0.210 | 535.46 | 5.33 | View |
| AS568-464 | 21.518 | 0.210 | 546.56 | 5.33 | View |
| AS568-465 | 21.955 | 0.210 | 557.66 | 5.33 | View |
| AS568-466 | 22.392 | 0.210 | 568.76 | 5.33 | View |
| AS568-467 | 22.829 | 0.210 | 579.86 | 5.33 | View |
| AS568-468 | 23.266 | 0.210 | 590.96 | 5.33 | View |
| AS568-469 | 23.703 | 0.210 | 602.06 | 5.33 | View |
| AS568-470 | 24.140 | 0.210 | 613.16 | 5.33 | View |
| AS568-471 | 24.577 | 0.210 | 624.26 | 5.33 | View |
| AS568-472 | 25.014 | 0.210 | 635.36 | 5.33 | View |
| AS568-473 | 25.451 | 0.210 | 646.46 | 5.33 | View |
| AS568-474 | 25.888 | 0.210 | 657.56 | 5.33 | View |
| AS568-475 | 26.325 | 0.210 | 668.65 | 5.33 | View |
Need AS568 400 Series O-rings?
We supply AS568 400 Series sizes in NBR, FKM, EPDM, VMQ, HNBR, and PTFE. MOQ from 1 piece.