O-RING SIZE CHART

Standard imperial (inch) sizes are specified using the three-digit “dash numbers” defined in Aerospace Standard (AS) 568A. Published by the Society of Automotive Engineers (SAE), AS 568A supersedes and cancels both AS 568 and Aerospace Recommended Practice (ARP) 568. When ordering standard sizes, all you need to specify is an AS 568A dash number (for example, AS 568A-011).

In case you prefer metric O-ring sizes, please refer to our DIN 3771 standard O-ring size chart.

o-ring_cs.png

AS 568A

ID: Inner Diameter
CS: Cross Section

NO.ID [mm]CS [mm]ID [inch]CS [inch]
0010.741.020.0290.040
0021.071.270.0420.050
0031.421.520.0560.060
0041.781.780.0700.070
0052.571.780.1010.070
0062.901.780.1140.070
0073.681.780.1450.070
0084.471.780.1760.070
0095.281.780.2080.070
0106.071.780.2390.070
0117.651.780.3010.070
0129.251.780.3640.070
01310.821.780.4260.070
01412.421.780.4890.070
01514.001.780.5510.070
01615.601.780.6140.070
01717.171.780.6760.070
01818.771.780.7380.070
01920.351.780.8010.070
02021.951.780.8640.070
02123.521.780.9260.070
02225.121.780.9890.070
02326.701.781.0510.070
02428.301.781.1140.070
02529.871.781.1760.070
02631.471.781.2390.070
02733.051.781.3010.070
02834.651.781.3640.070
02937.821.781.4890.070
03041.001.781.6140.070
03144.171.781.7390.070
03247.351.781.8640.070
03350.521.781.9890.070
03453.701.782.1140.070
03556.871.782.2390.070
03660.051.782.3640.070
03763.221.782.4890.070
03866.401.782.6140.070
03969.571.782.7390.070
04072.751.782.8640.070
04175.921.782.9890.070
04282.271.783.2390.070
04388.621.783.4890.070
04494.971.783.7390.070
045101.321.783.9890.070
046107.671.784.2390.070
047114.021.784.4890.070
048120.371.784.7390.070
049126.721.784.9890.070
050133.071.785.2390.070
1021.242.620.0490.103
1032.062.620.0810.103
1042.842.620.1120.103
1053.632.620.1430.103
1064.422.620.1740.103
01075.232.620.2060.103
1086.022.620.2370.103
1097.592.620.2990.103
1109.192.620.3620.103
11110.772.620.4240.103
11212.372.620.4870.103
11313.942.620.5490.103
11415.542.620.6120.103
11517.122.620.6740.103
11618.722.620.7370.103
11720.292.620.7990.103
11821.892.620.8620.103
11923.472.620.9240.103
12025.072.620.9870.103
12126.642.621.0490.103
12228.242.621.1120.103
12329.822.621.1740.103
12431.422.621.2370.103
12532.992.621.2990.103
12634.592.621.3620.103
12736.172.621.4240.103
12837.772.621.4870.103
12939.342.621.5490.103
13040.942.621.6120.103
13142.522.621.6740.103
13244.122.621.7370.103
13345.692.621.7990.103
13447.292.621.8620.103
13548.902.621.9250.103
13650.472.621.9870.103
13752.072.622.0500.103
13853.642.622.1120.103
13955.252.622.1750.103
14056.822.622.2370.103
14158.422.622.3000.103
14259.992.622.3620.103
14361.602.622.4250.103
14463.172.622.4870.103
14564.772.622.5500.103
14666.342.622.6120.103
14767.952.622.6750.103
14869.522.622.7370.103
14971.122.622.8000.103
15072.692.622.8620.103
15175.872.622.9870.103
15282.222.623.2370.103
15388.572.623.4870.103
15494.922.623.7370.103
155101.272.623.9870.103
156107.622.624.2370.103
157113.972.624.4870.103
158120.322.624.7370.103
159126.672.624.9870.103
160133.022.625.2370.103
161139.372.625.4870.103
162145.722.625.7370.103
163152.072.625.9870.103
164158.422.626.2370.103
165164.772.626.4870.103
166171.122.626.7370.103
167177.472.626.9870.103
168183.822.627.2370.103
169190.172.627.4870.103
170196.522.627.7370.103
171202.872.627.9870.103
172209.222.628.2370.103
173215.572.628.4870.103
174221.922.628.7370.103
175228.272.628.9870.103
176234.622.629.2370.103
177240.972.629.4870.103
178247.322.629.7370.103
2014.343.530.1710.139
2025.943.530.2340.139
2037.523.530.2960.139
2049.123.530.3590.139
20510.693.530.4210.139
20612.293.530.4840.139
20713.873.530.5460.139
20815.473.530.6090.139
20917.043.530.6710.139
21018.643.530.7340.139
21120.223.530.7960.139
21221.823.530.8590.139
21323.393.530.9210.139
21424.993.530.9840.139
21526.573.531.0460.139
21628.173.531.1090.139
21729.743.531.1710.139
21831.343.531.2340.139
21932.923.531.2960.139
22034.523.531.3590.139
22136.093.531.4210.139
22237.693.531.4840.139
22340.873.531.6090.139
22444.043.531.7340.139
22547.223.531.8590.139
22650.393.531.9840.139
22753.573.532.1090.139
22856.743.532.2340.139
22959.923.532.3590.139
23063.093.532.4840.139
23166.273.532.6090.139
23269.443.532.7340.139
23372.623.532.8590.139
23475.793.532.9840.139
23578.973.533.1090.139
23682.143.533.2340.139
23785.323.533.3590.139
23888.493.533.4840.139
23991.673.533.6090.139
24094.843.533.7340.139
24198.023.533.8590.139
242101.193.533.9840.139
243104.373.534.1090.139
244107.543.534.2340.139
245110.723.534.3590.139
246113.893.534.4840.139
247117.073.534.6090.139
248120.243.534.7340.139
249123.423.534.8590.139
250126.593.534.9840.139
251129.773.535.1090.139
252132.943.535.2340.139
253136.123.535.3590.139
254139.293.535.4840.139
255142.473.535.6090.139
256145.643.535.7340.139
257148.823.535.8590.139
258151.993.535.9840.139
259158.343.536.2340.139
260164.693.536.4840.139
261171.043.536.7340.139
262177.393.536.9840.139
263183.743.537.2340.139
264190.093.537.4840.139
265196.443.537.7340.139
266202.793.537.9840.139
267209.143.538.2340.139
268215.493.538.4840.139
269221.843.538.7340.139
270228.193.538.9840.139
271234.543.539.2340.139
272240.893.539.4840.139
273247.243.539.7340.139
274253.593.539.9840.139
275266.293.5310.4840.139
276278.993.5310.9840.139
277291.693.5311.4840.139
278304.393.5311.9840.139
279329.793.5312.9840.139
280355.193.5313.9840.139
281380.593.5314.9840.139
282405.263.5315.9550.139
283430.663.5316.9550.139
284456.063.5317.9550.139
30910.465.330.4120.210
31012.075.330.4750.210
31113.645.330.5370.210
31215.245.330.6000.210
31316.815.330.6620.210
31418.425.330.7250.210
31519.995.330.7870.210
31621.595.330.8500.210
31723.165.330.9120.210
31824.775.330.9750.210
31926.345.331.0370.210
32027.945.331.1000.210
32129.515.331.1620.210
32231.125.331.2250.210
32332.695.331.2870.210
32434.295.331.3500.210
32537.475.331.4750.210
32640.645.331.6000.210
32743.825.331.7250.210
32846.995.331.8500.210
32950.175.331.9750.210
33053.345.332.1000.210
33156.525.332.2250.210
33259.695.332.3500.210
33362.875.332.4750.210
33466.045.332.6000.210
33569.225.332.7250.210
33672.395.332.8500.210
33775.575.332.9750.210
33878.745.333.1000.210
33981.925.333.2250.210
34085.095.333.3500.210
34188.275.333.4750.210
34291.445.333.6000.210
34394.625.333.7250.210
34497.795.333.8500.210
345100.975.333.9750.210
346104.145.334.1000.210
347107.325.334.2250.210
348110.495.334.3500.210
349113.675.334.4750.210
350116.845.334.6000.210
351120.025.334.7250.210
352123.195.334.8500.210
353126.375.334.9750.210
354129.545.335.1000.210
355132.725.335.2250.210
356135.895.335.3500.210
357139.075.335.4750.210
358142.245.335.6000.210
359145.425.335.7250.210
360148.595.335.8500.210
361151.775.335.9750.210
362158.125.336.2250.210
363164.475.336.4750.210
364170.825.336.7250.210
365177.175.336.9750.210
366183.525.337.2250.210
367189.875.337.4750.210
368196.225.337.7250.210
369202.575.337.9750.210
370208.925.338.2250.210
371215.275.338.4750.210
372221.625.338.7250.210
373227.975.338.9750.210
374234.325.339.2250.210
375240.675.339.4750.210
376247.025.339.7250.210
377253.375.339.9750.210
378266.075.3310.4750.210
379278.775.3310.9750.210
380291.475.3311.4750.210
381304.175.3311.9750.210
382329.575.3312.9750.210
383354.975.3313.9750.210
384380.375.3314.9750.210
385405.265.3315.9550.210
386430.665.3316.9550.210
387456.065.3317.9550.210
388481.465.3318.9550.210
389506.865.3319.9550.210
390532.265.3320.9550.210
391557.665.3321.9550.210
392582.685.3322.9400.210
393608.085.3323.9400.210
394633.485.3324.9400.210
395658.885.3325.9400.210
425113.676.994.4750.275
426116.846.994.6000.275
427120.026.994.7250.275
428123.196.994.8500.275
429126.376.994.9750.275
430129.546.995.1000.275
431132.726.995.2250.275
432135.896.995.3500.275
433139.076.995.4750.275
434142.246.995.6000.275
435145.426.995.7250.275
436148.596.995.8500.275
437151.776.995.9750.275
438158.126.996.2250.275
439164.476.996.4750.275
440170.826.996.7250.275
441177.176.996.9750.275
442183.526.997.2250.275
443189.876.997.4750.275
444196.226.997.7250.275
445202.576.997.9750.275
446215.276.998.4750.275
447227.976.998.9750.275
448240.676.999.4750.275
449253.376.999.9750.275
450266.076.9910.4750.275
451278.776.9910.9750.275
452291.476.9911.4750.275
453304.176.9911.9750.275
454316.876.9912.4750.275
455329.576.9912.9750.275
456342.276.9913.4750.275
457354.976.99139750.275
458367.676.9914.4750.275
459380.376.9914.9750.275
460393.076.9915.4750.275
461405.266.9915.9550.275
462417.966.9916.4550.275
463430.666.9916.9550.275
464443.366.9917.4550.275
465456.066.9917.9550.275
466468.766.9918.4550.275
467481.466.9918.9550.275
468494.166.9919.4550.275
469506.866.9919.9550.275
470532.266.9920.9550.275
471557.666.9921.9550.275
472582.686.9922.9400.275
473608.086.9923.9400.275
474633.486.9924.9400.275
475658.886.9925.9400.275
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