O-Rings

O-Rings

Additional Information
There are several different standards to choose from when it comes to O-ring dimensions.  The most popular in the United States is the AS568 standard for O-ring sizes and tolerances.  Maintained by the Society of Automotive Engineers, this standard allows the user to choose from five different cross-sections with inside diameters ranging from 1/32" to 26". Tube fitting boss seals are included in AS568 as 900 series O-ring sizes, and are intended for use in MS33649 (now superseded by SAE-AS5202) straight thread tube fitings. 

RT/Dygert also offers a wide array of metric sizes, in both standard and non-standard dimensions.  As a subset of the metric sizes offered, we also stock many Japanese Industrial Standard (JIS B2401) sizes. If an O-ring with special size or fluid resistance is required, RT/Dygert can provide custom O-rings, specially made to your demanding requirements.
SIZES
Search: (more) Reset
Fit Groove Size
O.D.
AS568A
Dash No.
C/S
I.D.
Metric
Dimensions in Inches Nominal Size (Reference Only)
ID AS568A I.D. ± C/S Vol (in3) I.D. O.D. C/S
1397 309 0.412 .005 .210 ± .005 .0677 7/16 13/16 3/16
1398 310 0.475 .005 .210 ± .005 .0745 1/2 7/8 3/16
1399 311 0.537 .007 .210 ± .005 .0813 9/16 15/16 3/16
1400 312 0.6 .009 .210 ± .005 .0881 5/8 1 3/16
1401 313 0.662 .009 .210 ± .005 .0949 11/16 1-1/16 3/16
1402 314 0.725 .010 .210 ± .005 .1017 3/4 1-1/8 3/16
1403 315 0.787 .010 .210 ± .005 .1085 13/16 1-3/16 3/16
1404 316 0.85 .010 .210 ± .005 .1153 7/8 1-1/4 3/16
1405 317 0.912 .010 .210 ± .005 .1221 15/16 1-5/16 3/16
1406 318 0.975 .010 .210 ± .005 .1289 1 1-3/8 3/16
1407 319 1.037 .010 .210 ± .005 .1357 1-1/16 1-/7/16 3/16
1408 320 1.1 .012 .210 ± .005 .1425 1-1/8 1-1/2 3/16
1409 321 1.162 .012 .210 ± .005 .1493 1-3/16 1-9/16 3/16
1410 322 1.225 .012 .210 ± .005 .1561 1-1/4 1-5/8 3/16
1411 323 1.287 .012 .210 ± .005 .1629 1-5/16 1-11/16 3/16
1412 324 1.35 .012 .210 ± .005 .1697 1-3/8 1-3/4 3/16
1413 325 1.475 .015 .210 ± .005 .1833 1-1/2 1-7/8 3/16
1414 326 1.6 .015 .210 ± .005 .1970 1-5/8 2 3/16
1415 327 1.725 .015 .210 ± .005 .2106 1-3/4 2-1/8 3/16
1416 328 1.85 .015 .210 ± .005 .2242 1-7/8 2-1/4 3/16
1417 329 1.975 .018 .210 ± .005 .2378 2 2-3/8 3/16
1418 330 2.1 .018 .210 ± .005 .2514 2-1/8 2-1/2 3/16
1419 331 2.225 .018 .210 ± .005 .2650 2-1/4 2-5/8 3/16
1420 332 2.35 .018 .210 ± .005 .2789 2-3/8 2-3/4 3/16
1421 333 2.475 .020 .210 ± .005 .2922 2-1/2 2-7/8 3/16
1422 334 2.6 .020 .210 ± .005 .3058 2-5/8 3 3/16
1423 335 2.725 .020 .210 ± .005 .3194 2-3/4 3-1/8 3/16
1424 336 2.85 .020 .210 ± .005 .3330 2-7/8 3-1/4 3/16
1425 337 2.975 .024 .210 ± .005 .3466 3 3-3/8 3/16
1426 338 3.1 .024 .210 ± .005 .3602 3-1/8 3-1/2 3/16
1427 339 3.225 .024 .210 ± .005 .3738 3-1/4 3-5/8 3/16
1428 340 3.35 .024 .210 ± .005 .3874 3-3/8 3-3/4 3/16
1429 341 3.475 .024 .210 ± .005 .4010 3-1/2 3-7/8 3/16
1430 342 3.6 .028 .210 ± .005 .4146 3-5/8 4 3/16
1431 343 3.725 .028 .210 ± .005 .4282 3-3/4 4-1/8 3/16
1432 344 3.85 .028 .210 ± .005 .4418 3-7/8 4-1/4 3/16
1433 345 3.975 .028 .210 ± .005 .4554 4 4-3/8 3/16
1434 346 4.1 .028 .210 ± .005 .4690 4-1/8 4-1/2 3/16
1435 347 4.225 .030 .210 ± .005 .4826 4-1/4 4-5/8 3/16
1436 348 4.35 .030 .210 ± .005 .4962 4-3/8 4-3/4 3/16
1437 349 4.475 .030 .210 ± .005 .5098 4-1/2 4-7/8 3/16
1438 350 4.6 .030 .210 ± .005 .5234 4-5/8 5 3/16
1439 351 4.725 .030 .210 ± .005 .5370 4-3/4 5-1/8 3/16
1440 352 4.85 .030 .210 ± .005 .5506 4-7/8 5-1/4 3/16
1441 353 4.975 .037 .210 ± .005 .5642 5 5-3/8 3/16
1442 354 5.1 .037 .210 ± .005 .5778 5-1/8 5-1/2 3/16
1443 355 5.225 .037 .210 ± .005 .5914 5-1/4 5-5/8 3/16
1444 356 5.35 .037 .210 ± .005 .6050 5-3/8 5-3/4 3/16
1445 357 5.475 .037 .210 ± .005 .6186 5-1/2 5-7/8 3/16
1446 358 5.6 .037 .210 ± .005 .6322 5-5/8 6 3/16
1447 359 5.725 .037 .210 ± .005 .6458 5-3/4 6-1/8 3/16
1448 360 5.85 .037 .210 ± .005 .6594 5-7/8 6-1/4 3/16
1449 361 5.975 .037 .210 ± .005 .6730 6 6-3/8 3/16
1450 362 6.225 .040 .210 ± .005 .7002 6-1/4 6-5/8 3/16
1451 363 6.475 .040 .210 ± .005 .7274 6-1/2 6-7/8 3/16
1452 364 6.725 .040 .210 ± .005 .7546 6-3/4 7-1/8 3/16
1453 365 6.975 .040 .210 ± .005 .7818 7 7-3/8 3/16
1454 366 7.225 .045 .210 ± .005 .8090 7-1/4 7-5/8 3/16
1455 367 7.475 .045 .210 ± .005 .8362 7-1/2 7-7/8 3/16
1456 368 7.725 .045 .210 ± .005 .8634 7-3/4 8-1/8 3/16
1457 369 7.975 .045 .210 ± .005 .8906 8 8-3/8 3/16
1458 370 8.225 .050 .210 ± .005 .9178 8-1/4 8-5/8 3/16
1459 371 8.475 .050 .210 ± .005 .9450 8-1/2 8-7/8 3/16
1460 372 8.725 .050 .210 ± .005 .9722 8-3/4 9-1/8 3/16
1461 373 8.975 .050 .210 ± .005 .9994 9 9-3/8 3/16
1462 374 9.225 .055 .210 ± .005 1.0266 9-1/4 9-5/8 3/16
1463 375 9.475 .055 .210 ± .005 1.0538 9-1/2 9-7/8 3/16
1464 376 9.725 .055 .210 ± .005 1.0810 9-3/4 10-1/8 3/16
1465 377 9.975 .055 .210 ± .005 1.1083 10 10-3/8 3/16
1466 378 10.475 .060 .210 ± .005 1.1627 10-1/2 10-7/8 3/16
1467 379 10.975 .060 .210 ± .005 1.2171 11 11-3/8 3/16
1468 380 11.475 .065 .210 ± .005 1.2737 11-1/2 11-7/8 3/16
1469 381 11.975 .065 .210 ± .005 1.2715 12 12-3/8 3/16
1470 382 12.975 .065 .210 ± .005 1.3259 13 13-3/8 3/16
1471 383 13.975 .070 .210 ± .005 1.4347 14 14-3/8 3/16
1472 384 14.975 .070 .210 ± .005 1.5435 15 15-3/8 3/16
1473 385 15.955 .075 .210 ± .005 1.6523 16 16-3/8 3/16
1474 386 16.955 .080 .210 ± .005 1.7590 17 17-3/8 3/16
1475 387 17.955 .085 .210 ± .005 1.9766 18 18-3/8 3/16
1476 388 18.955 .090 .210 ± .005 2.0854 19 19-3/8 3/16
1477 389 19.955 .095 .210 ± .005 2.1942 20 20-3/8 3/16
1478 390 20.955 .095 .210 ± .005 2.3030 21 21-3/8 3/16
1479 391 21.955 .100 .210 ± .005 2.4118 22 22-3/8 3/16
1480 392 22.94 .105 .210 ± .005 2.5190 23 23-3/8 3/16
1481 393 23.94 .110 .210 ± .005 2.6278 24 24-3/8 3/16
1482 394 24.94 .115 .210 ± .005 2.7366 25 25-3/8 3/16
1483 395 25.94 .120 .210 ± .005 2.8454 26 26-3/8 3/16
MATERIALS
Search: (more) Reset
Flags