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 .210" ± .005"

Part # Dimensions in Inches Nominal Size (reference only)

AS568A I.D. ± C/S I.D. O.D. C/S

309 .412 .005 .210 7/16 13/16 3/16

310 .475 .005 .210 1/2 7/8 3/16

311 .537 .007 .210 9/16 15/16 3/16

312 .600 .009 .210 5/8 1 3/16

313 .662 .009 .210 11/16 1-1/16 3/16

314 .725 .010 .210 3/4 1-1/8 3/16

315 .787 .010 .210 13/16 1-3/16 3/16

316 .850 .010 .210 7/8 1-1/4 3/16

317 .912 .010 .210 15/16 1-5/16 3/16

318 .975 .010 .210 1 1-3/8 3/16

319 1.037 .010 .210 1-1/16 1-/7/16 3/16

320 1.100 .012 .210 1-1/8 1-1/2 3/16

321 1.162 .012 .210 1-3/16 1-9/16 3/16

322 1.225 .012 .210 1-1/4 1-5/8 3/16

323 1.287 .012 .210 1-5/16 1-11/16 3/16

324 1.350 .012 .210 1-3/8 1-3/4 3/16

325 1.475 .015 .210 1-1/2 1-7/8 3/16

326 1.600 .015 .210 1-5/8 2 3/16

327 1.725 .015 .210 1-3/4 2-1/8 3/16

328 1.850 .015 .210 1-7/8 2-1/4 3/16

329 1.975 .018 .210 2 2-3/8 3/16

330 2.100 .018 .210 2-1/8 2-1/2 3/16

331 2.225 .018 .210 2-1/4 2-5/8 3/16

332 2.350 .018 .210 2-3/8 2-3/4 3/16

333 2.475 .020 .210 2-1/2 2-7/8 3/16

334 2.600 .020 .210 2-5/8 3 3/16

335 2.725 .020 .210 2-3/4 3-1/8 3/16

336 2.850 .020 .210 2-7/8 3-1/4 3/16

337 2.975 .024 .210 3 3-3/8 3/16

338 3.100 .024 .210 3-1/8 3-1/2 3/16

339 3.225 .024 .210 3-1/4 3-5/8 3/16

340 3.350 .024 .210 3-3/8 3-3/4 3/16

341 3.475 .024 .210 3-1/2 3-7/8 3/16

342 3.600 .028 .210 3-5/8 4 3/16

343 3.725 .028 .210 3-3/4 4-1/8 3/16

344 3.850 .028 .210 3-7/8 4-1/4 3/16

345 3.975 .028 .210 4 4-3/8 3/16

346 4.100 .028 .210 4-1/8 4-1/2 3/16

347 4.225 .030 .210 4-1/4 4-5/8 3/16

348 4.350 .030 .210 4-3/8 4-3/4 3/16

349 4.475 .030 .210 4-1/2 4-7/8 3/16

350 4.600 .030 .210 4-5/8 5 3/16

351 4.725 .030 .210 4-3/4 5-1/8 3/16

352 4.850 .030 .210 4-7/8 5-1/4 3/16

353 4.975 .037 .210 5 5-3/8 3/16

354 5.100 .037 .210 5-1/8 5-1/2 3/16

355 5.225 .037 .210 5-1/4 5-5/8 3/16

356 5.350 .037 .210 5-3/8 5-3/4 3/16

357 5.475 .037 .210 5-1/2 5-7/8 3/16

358 5.600 .037 .210 5-5/8 6 3/16

359 5.725 .037 .210 5-3/4 6-1/8 3/16

360 5.850 .037 .210 5-7/8 6-1/4 3/16

361 5.975 .037 .210 6 6-3/8 3/16

362 6.225 .040 .210 6-1/4 6-5/8 3/16

363 6.475 .040 .210 6-1/2 6-7/8 3/16

364 6.725 .040 .210 6-3/4 7-1/8 3/16

365 6.975 .040 .210 7 7-3/8 3/16

366 7.225 .045 .210 7-1/4 7-5/8 3/16

367 7.475 .045 .210 7-1/2 7-7/8 3/16

368 7.725 .045 .210 7-3/4 8-1/8 3/16

369 7.975 .045 .210 8 8-3/8 3/16

370 8.225 .050 .210 8-1/4 8-5/8 3/16

371 8.475 .050 .210 8-1/2 8-7/8 3/16

372 8.725 .050 .210 8-3/4 9-1/8 3/16

373 8.975 .050 .210 9 9-3/8 3/16

374 9.225 .055 .210 9-1/4 9-5/8 3/16

375 9.475 .055 .210 9-1/2 9-7/8 3/16

376 9.725 .055 .210 9-3/4 10-1/8 3/16

377 9.975 .055 .210 10 10-3/8 3/16

378 10.475 .060 .210 10-1/2 10-7/8 3/16

379 10.975 .060 .210 11 11-3/8 3/16

380 11.475 .065 .210 11-1/2 11-7/8 3/16

381 11.975 .065 .210 12 12-3/8 3/16

382 12.975 .065 .210 13 13-3/8 3/16

383 13.975 .070 .210 14 14-3/8 3/16

384 14.975 .070 .210 15 15-3/8 3/16

385 15.955 .075 .210 16 16-3/8 3/16

386 16.955 .080 .210 17 17-3/8 3/16

387 17.955 .085 .210 18 18-3/8 3/16

388 18.955 .090 .210 19 19-3/8 3/16

389 19.955 .095 .210 20 20-3/8 3/16

390 20.955 .095 .210 21 21-3/8 3/16

391 21.955 .100 .210 22 22-3/8 3/16

392 22.940 .105 .210 23 23-3/8 3/16

393 23.940 .110 .210 24 24-3/8 3/16

394 24.940 .115 .210 25 25-3/8 3/16

395 25.940 .120 .210 26 26-3/8 3/16

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