O-Ring Sizes
O-Ring sizes and dimensions BS1806 - AS568A |
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Materials | ||
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NBR | FKM/VIT | EPDM |
HNBR | FFKM | Neoprene |
PTFE | Silicone | Fluorosilicone |
Other materials are available on request
3/16" cross section | ||||||
---|---|---|---|---|---|---|
5.34mm ± 0.13mm 0.210"± 0.005" | ||||||
Internal diameter | Nominal size | |||||
Part No. (BS) | mm | Tol ± | Inch | Tol ± | Shaft | Bore |
309 | 10.46 | 0.13 | 0.412 | 0.005 | 7/16 | 13/16 |
310 | 12.07 | 0.13 | 0.475 | 0.005 | 1/2 | 7/8 |
311 | 13.64 | 0.13 | 0.537 | 0.005 | 9/16 | 15/16 |
312 | 15.24 | 0.13 | 0.600 | 0.005 | 5/8 | 1 |
313 | 16.81 | 0.13 | 0.662 | 0.005 | 11/16 | 1.1/16 |
314 | 18.42 | 0.13 | 0.725 | 0.005 | 3/4 | 1.1/8 |
315 | 19.99 | 0.15 | 0.787 | 0.006 | 13/16 | 1.3/16 |
316 | 21.59 | 0.15 | 0.850 | 0.006 | 7/8 | 1.1/4 |
317 | 23.16 | 0.15 | 0.912 | 0.006 | 15/16 | 1.5/16 |
318 | 24.77 | 0.15 | 0.975 | 0.006 | 1 | 1.3/8 |
319 | 26.34 | 0.15 | 1.037 | 0.006 | 1.1/16 | 1.7/16 |
320 | 27.94 | 0.15 | 1.100 | 0.006 | 1.1/8 | 1.1/2 |
321 | 29.51 | 0.15 | 1.162 | 0.006 | 1.3/16 | 1.9/16 |
322 | 31.12 | 0.15 | 1.225 | 0.006 | 1.1/4 | 1.5/8 |
323 | 32.69 | 0.15 | 1.287 | 0.006 | 1.5/16 | 1.11/16 |
324 | 34.29 | 0.15 | 1.350 | 0.006 | 1.3/8 | 1.3/4 |
325 | 37.47 | 0.25 | 1.475 | 0.010 | 1.1/2 | 1.7/8 |
326 | 40.65 | 0.25 | 1.600 | 0.010 | 1.5/8 | 2 |
327 | 43.82 | 0.25 | 1.725 | 0.010 | 1.3/4 | 2.1/8 |
328 | 47.00 | 0.25 | 1.850 | 0.010 | 1.7/8 | 2.1/4 |
329 | 50.16 | 0.25 | 1.975 | 0.010 | 2 | 2.3/8 |
330 | 53.34 | 0.25 | 2.100 | 0.010 | 2.1/8 | 2.1/2 |
331 | 56.52 | 0.25 | 2.225 | 0.010 | 2.1/4 | 2.5/8 |
332 | 59.70 | 0.25 | 2.350 | 0.010 | 2.3/8 | 2.3/4 |
333 | 62.87 | 0.25 | 2.475 | 0.010 | 2.1/2 | 2.7/8 |
334 | 66.04 | 0.25 | 2.600 | 0.010 | 2.5/8 | 3 |
335 | 69.22 | 0.38 | 2.725 | 0.015 | 2.3/4 | 3.1/8 |
336 | 72.40 | 0.38 | 2.850 | 0.015 | 2.7/8 | 3.1/4 |
619 | 74.63 | 0.38 | 2.938 | 0.015 | 2.15/16 | 3.5/16 |
337 | 75.57 | 0.38 | 2.975 | 0.015 | 3 | 3.3/8 |
338 | 78.74 | 0.38 | 3.100 | 0.015 | 3.1/8 | 3.1/2 |
620 | 79.77 | 0.38 | 3.141 | 0.015 | - | - |
339 | 81.92 | 0.38 | 3.225 | 0.015 | 3.1/4 | 3.5/8 |
340 | 85.09 | 0.38 | 3.350 | 0.015 | 3.3/8 | 3.3/4 |
341 | 88.27 | 0.38 | 3.475 | 0.015 | 3.1/2 | 3.7/8 |
621 | 89.69 | 0.38 | 3.531 | 0.015 | 3.9/16 | 3.15/16 |
342 | 91.44 | 0.38 | 3.600 | 0.015 | 3.5/8 | 4 |
343 | 94.62 | 0.38 | 3.725 | 0.015 | 3.3/4 | 4.1/8 |
344 | 97.80 | 0.38 | 3.850 | 0.015 | 3.7/8 | 4.1/4 |
622 | 100.00 | 0.38 | 3.937 | 0.015 | 3.15/16 | 4.5/16 |
345 | 100.97 | 0.38 | 3.975 | 0.015 | 4 | 4.3/8 |
346 | 104.14 | 0.38 | 4.100 | 0.015 | 4.1/8 | 4.1/2 |
347 | 107.32 | 0.38 | 4.225 | 0.015 | 4.1/4 | 4.5/8 |
623 | 109.54 | 0.38 | 4.312 | 0.015 | - | - |
348 | 110.49 | 0.38 | 4.350 | 0.015 | 4.3/8 | 4.3/4 |
349 | 113.67 | 0.38 | 4.475 | 0.015 | 4.1/2 | 4.7/8 |
350 | 116.84 | 0.38 | 4.600 | 0.015 | 4.5/8 | 5 |
350A | 117.48 | 0.38 | 4.625 | 0.015 | - | - |
351 | 120.02 | 0.38 | 4.725 | 0.015 | 4.3/4 | 5.1/8 |
351A | 120.70 | 0.38 | 4.750 | 0.015 | - | - |
352 | 123.20 | 0.38 | 4.850 | 0.015 | 4.7/8 | 5.1/4 |
352A | 123.80 | 0.38 | 4.875 | 0.015 | - | - |
353 | 126.37 | 0.38 | 4.975 | 0.015 | 5 | 5.3/8 |
3/16" cross section | ||||||
---|---|---|---|---|---|---|
5.34mm ± 0.13mm 0.210"± 0.005" | ||||||
Internal diameter | Nominal size | |||||
Part No. (BS) | mm | Tol ± | Inch | Tol ± | Shaft | Bore |
353A | 127.00 | 0.58 | 5.000 | 0.023 | - | - |
354 | 129.54 | 0.58 | 5.100 | 0.023 | 5.1/8 | 5.1/2 |
354A | 130.18 | 0.58 | 5.125 | 0.023 | - | - |
355 | 132.72 | 0.58 | 5.225 | 0.023 | 5.1/4 | 5.5/8 |
355A | 133.35 | 0.58 | 5.250 | 0.023 | - | - |
356 | 135.90 | 0.58 | 5.350 | 0.023 | 5.3/8 | 5.3/4 |
356A | 136.53 | 0.58 | 5.375 | 0.023 | - | - |
357 | 139.07 | 0.58 | 5.475 | 0.023 | 5.1/2 | 5.7/8 |
357A | 139.70 | 0.58 | 5.500 | 0.023 | - | - |
358 | 142.24 | 0.58 | 5.600 | 0.023 | 5.5/8 | 6 |
358A | 142.88 | 0.58 | 5.625 | 0.023 | - | - |
359 | 145.42 | 0.58 | 5.725 | 0.023 | 5.3/4 | 6.1/8 |
359A | 146.05 | 0.58 | 5.750 | 0.023 | - | - |
360 | 148.60 | 0.58 | 5.850 | 0.023 | 5.7/8 | 6.1/4 |
360A | 149.23 | 0.58 | 5.875 | 0.023 | - | - |
361 | 151.77 | 0.58 | 5.975 | 0.023 | 6 | 6.3/8 |
361A | 155.00 | 0.58 | 6.100 | 0.023 | 6.1/8 | 6.1/2 |
362 | 158.12 | 0.58 | 6.225 | 0.023 | 6.1/4 | 6.5/8 |
362A | 161.30 | 0.58 | 6.350 | 0.023 | 6.3/8 | 6.3/4 |
363 | 164.47 | 0.58 | 6.475 | 0.023 | 6.1/2 | 6.5/8 |
363A | 167.70 | 0.58 | 6.600 | 0.023 | 6.5/8 | 7 |
364 | 170.82 | 0.58 | 6.725 | 0.023 | 6.3/4 | 7.1/8 |
365 | 177.17 | 0.58 | 6.975 | 0.023 | 7 | 7.3/8 |
366 | 183.52 | 0.76 | 7.225 | 0.023 | 7.1/4 | 7.5/8 |
367 | 189.87 | 0.76 | 7.425 | 0.023 | 7.1/2 | 7.7/8 |
368 | 196.22 | 0.76 | 7.725 | 0.023 | 7.3/4 | 8.1/8 |
369 | 202.57 | 0.76 | 7.975 | 0.030 | 8 | 8.3/8 |
370 | 208.92 | 0.76 | 8.225 | 0.030 | 8.1/4 | 8.5/8 |
371 | 215.27 | 0.76 | 8.475 | 0.030 | 8.1/2 | 8.7/8 |
372 | 221.62 | 0.76 | 8.725 | 0.030 | 8.3/4 | 9.1/8 |
373 | 227.97 | 0.76 | 8.975 | 0.030 | 9 | 9.3/8 |
374 | 234.32 | 0.76 | 9.225 | 0.030 | 9.1/4 | 9.5/8 |
375 | 240.67 | 0.76 | 9.475 | 0.030 | 9.1/2 | .7/8 |
376 | 247.02 | 0.76 | 9.725 | 0.030 | 9.3/4 | 10.1/8 |
377 | 253.37 | 0.76 | 9.975 | 0.030 | 10 | 10.3/8 |
378 | 266.07 | 0.76 | 10.475 | 0.030 | 10.1/2 | 10.7/8 |
379 | 278.77 | 0.76 | 10.975 | 0.030 | 11 | 11.3/8 |
380 | 291.47 | 0.76 | 11.475 | 0.030 | 11.1/2 | 11.7/8 |
381 | 304.17 | 0.76 | 11.975 | 0.030 | 12 | 12.3/8 |
382 | 329.57 | 0.76 | 12.975 | 0.030 | 13 | 13.3/8 |
383 | 354.97 | 0.76 | 13.975 | 0.030 | 14 | 14.3/8 |
384 | 380.37 | 0.76 | 14.975 | 0.030 | 15 | 15.3/8 |
385 | 405.26 | 1.14 | 15.975 | 0.045 | 16 | 16.3/8 |
386 | 430.66 | 1.14 | 16.975 | 0.045 | 17 | 17.3/8 |
387 | 456.06 | 1.14 | 17.975 | 0.045 | 18 | 18.3/8 |
388 | 481.46 | 1.14 | 18.975 | 0.045 | 19 | 19.3/8 |
389 | 506.81 | 1.14 | 19.975 | 0.045 | 20 | 20.3/8 |
390 | 532.20 | 1.14 | 20.975 | 0.045 | 21 | 21.3/8 |
391 | 557.60 | 1.14 | 21.955 | 0.045 | 22 | 22.3/8 |
392 | 582.68 | 1.52 | 22.940 | 0.060 | 23 | 23.3/8 |
393 | 608.08 | 1.52 | 23.940 | 0.060 | 24 | 24.3/8 |
394 | 633.48 | 1.52 | 24.940 | 0.060 | 25 | 25.3/8 |
395 | 658.88 | 1.52 | 25.940 | 0.060 | 26 | 26.3/8 |