O-Rings in all sizes, compounds and durometers from Sealing Specialties, Inc.

Sealing Specialties distribute o-rings and seals including spliced orings, o ring kits, Teflon encapsulated o-rings and seals, back-up rings, braided packings, lathe cut seals, gaskets, polyurethane seals, oil seals, metal gaskets, perfluoroelastomer o-rings

Sizing Charts

CROSS SECTION .275" ± .006"

Part # Dimensions in Inches Nominal Size (reference only)

AS568A I.D. ± C/S I.D. O.D. C/S

425 4.475 .033 .275 4-1/2 5 1/4

426 4.600 .033 .275 4-5/8 5-1/8 1/4

427 4.725 .033 .275 4-3/4 5-1/4 1/4

428 4.850 .033 .275 4-7/8 5-3/8 1/4

429 4.975 .037 .275 5 5-1/2 1/4

430 5.100 .037 .275 5-1/8 5-5/8 1/4

431 5.225 .037 .275 5-1/4 5-3/4 1/4

432 5.350 .037 .275 5-3/8 5-7/8 1/4

433 5.475 .037 .275 5-1/2 6 1/4

434 5.600 .037 .275 5-5/8 6-1/8 1/4

435 5.725 .037 .275 5-3/4 6-1/4 1/4

436 5.850 .037 .275 5-7/8 6-3/8 1/4

437 5.975 .037 .275 6 6-1/2 1/4

438 6.225 .040 .275 6-1/4 6-3/4 1/4

439 6.475 .040 .275 6-1/2 7 1/4

440 6.725 .040 .275 6-3/4 7-1/4 1/4

441 6.975 .040 .275 7 7-1/2 1/4

442 7.225 .045 .275 7-1/4 7-3/4 1/4

443 7.475 .045 .275 7-1/2 8 1/4

444 7.725 .045 .275 7-3/4 8-1/4 1/4

445 7.975 .045 .275 8 8-1/2 1/4

446 8.475 .035 .275 8-1/2 9 1/4

447 8.975 .055 .275 9 9-1/2 1/4

448 9.475 .055 .275 9-1/2 10 1/4

449 9.975 .055 .275 10 10-1/2 1/4

450 10.475 .060 .275 10-1/2 11 1/4

451 10.975 .060 .275 11 11-1/2 1/4

452 11.475 .060 .275 11-1/2 12 1/4

453 11.975 .060 .275 12 12-1/2 1/4

454 12.475 .060 .275 12-1/2 13 1/4

455 12.975 .060 .275 13 13-1/2 1/4

456 13.475 .070 .275 13-1/2 14 1/4

457 13.975 .070 .275 14 14-1/2 1/4

458 14.475 .070 .275 14-1/2 15 1/4

459 14.975 .070 .275 15 15-1/2 1/4

460 15.475 .070 .275 15-1/2 16 1/4

461 15.955 .075 .275 16 16-1/2 1/4

462 16.455 .075 .275 16-1/2 17 1/4

463 16.955 .080 .275 17 17-1/2 1/4

464 17.455 .085 .275 17-1/2 18 1/4

465 17.955 .085 .275 18 18-1/2 1/4

466 18.455 .085 .275 18-1/2 19 1/4

467 18.955 .090 .275 19 19-1/2 1/4

468 19.455 .090 .275 19-1/2 20 1/4

469 19.955 .095 .275 20 20-1/2 1/4

470 20.955 .095 .275 21 21-1/2 1/4

471 21.955 .100 .275 22 22-1/2 1/4

472 22.940 .105 .275 23 23-1/2 1/4

473 23.940 .110 .275 24 24-1/2 1/4

474 24.940 .115 .275 25 25-1/2 1/4

475 25.940 .120 .275 26 26-1/2 1/4

1/16" (Nominal .070")
3/32" (Nominal .103")
1/8" (Nominal .139")
3/16" (Nominal .210")
1/4" (Nominal .275)
900 (BOSS) Series