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O-Ring Size Chart

How to measure an O-Ring?O-ring Size Diagram

O-rings are actually really easy to measure. All you need to do is measure the internal diameter (ID) or outside diameter (OD) and the width or cross section (C/S) of the o ring. The diagram shows exactly where these dimensions are to be found. Once you have these measurements you then need to decide if the size you need is listed below or if the best fit will be a metric oring. Once you have the AS-568 dash size you need, select the compound link at the bottom of the page to place your order.

To calculate an o-ring's outside diameter (OD) you may use this formula: 2(CS) + ID = OD
If you have the OD and need to find the ID use this formula: OD - 2(CS) = ID

Link to order AS568 O-Rings online: AS568 O-Rings

AS568 O-Ring Size Chart
AS568A NOMINAL SIZE (Inch)   Actual Size (Inch)      Actual Size (mm's)  
Dash No.
I.D.
O.D.
W.
 
I.D.
W.
     
I.D. (mm)
W. (mm)
 
-001
-002
-003
-004
-005
-006
-007
-008
-009
-010
-011
-012
-013
-014
-015
-016
-017
-018
-019
-020
-021
-022
-023
-024
-025
-026
-027
-028
-029
-030
-031
-032
-033
-034
-035
-036
-037
-038
-039
-040
-041
-042
-043
-044
-045
-046
-047
-048
-049
-050
-102
-103
-104
-105
-106
-107
-108
-109
-110
-111
-112
-113
-114
-115
-116
-117
-118
-119
-120
-121
-122
-123
-124
-125
-126
-127
-128
-129
-130
-131
-132
-133
-134
-135
-136
-137
-138
-139
-140
-141
-142
-143
-144
-145
-146
-147
-148
-149
-150
-151
-152
-153
-154
-155
-156
-157
-158
-159
-160
-161
-162
-163
-164
-165
-166
-167
-168
-169
-170
-171
-172
-173
-174
-175
-176
-177
-178
-201
-202
-203
-204
-205
-206
-207
-208
-209
-210
-211
-212
-213
-214
-215
-216
-217
-218
-219
-220
-221
-222
-223
-224
-225
-226
-227
-228
-229
-230
-231
-232
-233
-234
-235
-236
-237
-238
-239
-240
-241
-242
-243
-244
-245
-246
-247
-248
-249
-250
-251
-252
-253
-254
-255
-256
-257
-258
-259
-260
-261
-262
-263
-264
-265
-266
-267
-268
-269
-270
-271
-272
-273
-274
-275
-276
-277
-278
-279
-280
-281
-282
-283
-284
-309
-310
-311
-312
-313
-314
-315
-316
-317
-318
-319
-320
-321
-322
-323
-324
-325
-326
-327
-328
-329
-330
-331
-332
-333
-334
-335
-336
-337
-338
-339
-340
-341
-342
-343
-344
-345
-346
-347
-348
-349
-350
-351
-352
-353
-354
-355
-356
-357
-358
-359
-360
-361
-362
-363
-364
-365
-366
-367
-368
-369
-370
-371
-372
-373
-374
-375
-376
-377
-378
-379
-380
-381
-382
-383
-384
-385
-386
-387
-388
-389
-390
-391
-392
-393
-394
-395
-425
-426
-427
-428
-429
-430
-431
-432
-433
-434
-435
-436
-437
-438
-439
-440
-441
-442
-443
-444
-445
-446
-447
-448
-449
-450
-451
-452
-453
-454
-455
-456
-457
-458
-459
-460
-461
-462
-463
-464
-465
-466
-467
-468
-469
-470
-471
-472
-473
-474
-475
-901
-902
-903
-904
-905
-906
-907
-908
-909
-910
-911
-912
-913
-914
-916
-918
-920
-924
-928
-932
1/32
3/64
1/16
5/64
3/32
1/8
5/32
3/16
7/32
1/4
5/16
3/8
7/16
1/2
9/16
5/8
11/16
3/4
13/16
7/8
15/16
1
1-1/16
1-1/8
1-3/16
1-1/4
1-5/16
1-3/8
1-1/2
1-5/8
1-3/4
1-7/8
2
2-1/8
2-1/4
2-3/8
2-1/2
2-5/8
2-3/4
2-7/8
3
3-1/4
3-1/2
3-3/4
4
4-1/4
4-1/2
4-3/4
5
5-1/4
1/16
3/32
1/8
5/32
3/16
7/32
1/4
5/16
3/8
7/16
1/2
9/16
5/8
11/16
3/4
13/16
7/8
15/16
1
1-1/16
1-1/8
1-3/16
1-1/4
1-5/16
1-3/8
1-7/16
1-1/2
1-9/16
1-5/8
1-11/16
1-3/4
1-13/16
1-7/8
1-15/16
2
2-1/16
2-1/8
2-3/16
2-1/4
2-5/16
2-3/8
2-7/16
2-1/2
2-9/16
2-5/8
2-11/16
2-3/4
2-13/16
2-7/8
3
3-1/4
3-1/2
3-3/4
4
4-1/4
4-1/2
4-3/4
5
5-1/4
5-1/2
5-3/4
6
6-1/4
6-1/2
6-3/4
7
7-1/4
7-1/2
7-3/4
8
8-1/4
8-1/2
8-3/4
9
9-1/4
9-1/2
9-3/4
3/16
1/4
5/16
3/8
7/16
1/2
9/16
5/8
11/16
3/4
13/16
7/8
15/16
1
1-1/16
1-1/8
1-3/16
1-1/4
1-5/16
1-3/8
1-7/16
1-1/2
1-5/8
1-3/4
1-7/8
2
2-1/8
2-1/4
2-3/8
2-1/2
2-5/8
2-3/4
2-7/8
3
3-1/8
3-1/4
3-3/8
3-1/2
3-5/8
3-3/4
3-7/8
4
4-1/8
4-1/4
4-3/8
4-1/2
4-5/8
4-3/4
4-7/8
5
5-1/8
5-1/4
5-3/8
5-1/2
5-5/8
5-3/4
5-7/8
6
6-1/4
6-1/2
6-3/4
7
7-1/4
7-1/2
7-3/4
8
8-1/4
8-1/2
8-3/4
9
9-1/4
9-1/2
9-3/4
10
10-1/2
11
11-1/2
12
13
14
15
16
17
18
7/16
1/2
9/16
5/8
11/16
3/4
13/16
7/8
15/16
1
1-1/16
1-1/8
1-3/16
1-1/4
1-5/16
1-3/8
1-1/2
1-5/8
1-3/4
1-7/8
2
2-1/8
2-1/4
2-3/8
2-1/2
2-5/8
2-3/4
2-7/8
3
3-1/8
3-1/4
3-3/8
3-1/2
3-5/8
3-3/4
3-7/8
4
4-1/8
4-1/4
4-3/8
4-1/2
4-5/8
4-3/4
4-7/8
5
5-1/8
5-1/4
5-3/8
5-1/2
5-5/8
5-3/4
5-7/8
6
6-1/4
6-1/2
6-3/4
7
7-1/4
7-1/2
7-3/4
8
8-1/4
8-1/2
8-3/4
9
9-1/4
9-1/2
9-3/4
10
10-1/2
11
11-1/2
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
4-1/2
4-5/8
4-3/4
4-7/8
5
5-1/8
5-1/4
5-3/8
5-1/2
5-5/8
5-3/4
5-7/8
6
6-1/4
6-1/2
6-3/4
7
7-1/4
7-1/2
7-3/4
8
8-1/2
9
9-1/2
10
10-1/2
11
11-1/2
12
12-1/2
13
13-1/2
14
14-1/2
15
15-1/2
16
16-1/2
17
17-1/2
18
18-1/2
19
19-1/2
20
21
22
23
24
25
26
3/32
9/64
3/16
13/64
7/32
1/4
9/32
5/16
11/32
3/8
7/16
1/2
9/16
5/8
11/16
3/4
13/16
7/8
15/16
1
1-1/16
1-1/8
1-3/16
1-1/4
1-5/16
1-3/8
1-7/16
1-1/2
1-5/8
1-3/4
1-7/8
2
2-1/8
2-1/4
2-3/8
2-1/2
2-5/8
2-3/4
2-7/8
3
3-1/8
3-3/8
3-5/8
3-7/8
4-1/8
4-3/8
4-5/8
4-7/8
5-1/8
5-3/8
1/4
9/32
5/16
11/32
3/8
13/32
7/16
1/2
9/16
5/8
11/16
3/4
13/16
7/8
15/16
1
1-1/16
1-1/8
1-3/16
1-1/4
1-5/16
1-3/8
1-7/16
1-1/2
1-9/16
1-5/8
1-11/16
1-3/4
1-13/16
1-7/8
1-15/16
2
2-1/16
2-1/8
2-3/16
2-1/4
2-5/16
2-3/8
2-7/16
2-1/2
2-9/16
2-5/8
2-11/16
2-3/4
2-13/16
2-7/8
2-15/16
3
3-1/16
3-3/16
3-7/16
3-11/16
3-15/16
4-3/16
4-7/16
4-11/16
4-15/16
5-3/16
5-7/16
5-11/16
5-15/16
6-3/16
6-7/16
6-11/16
6-15/16
7-3/16
7-7/16
7-11/16
7-15/16
8-3/16
8-7/16
8-11/16
8-15/16
9-3/16
9-7/16
9-11/16
9-15/16
7/16
1/2
9/16
5/8
11/16
3/4
13/16
7/8
15/16
1
1-1/16
1-1/8
1-3/16
1-1/4
1-5/16
1-3/8
1-7/16
1-1/2
1-9/16
1-5/8
1-11/16
1-3/4
1-7/8
2
2-1/8
2-1/4
2-3/8
2-1/2
2-5/8
2-3/4
2-7/8
3
3-1/8
3-1/4
3-3/8
3-1/2
3-5/8
3-3/4
3-7/8
4
4-1/8
4-1/4
4-3/8
4-1/2
4-5/8
4-3/4
4-7/8
5
5-1/8
5-1/4
5-3/8
5-1/2
5-5/8
5-3/4
5-7/8
6
6-1/8
6-1/4
6-1/2
6-3/4
7
7-1/4
7-1/2
7-3/4
8
8-1/4
8-1/2
8-3/4
9
9-1/4
9-1/2
9-3/4
10
10-1/4
10-3/4
11-1/4
11-3/4
12-1/4
13-1/4
14-1/4
15-1/4
16-1/4
17-1/4
18-1/4
13/16
7/8
15-16
1
1-1/16
1-1/8
1-3/16
1-1/4
1-5/16
1-3/8
1-7/16
1-1/2
1-9/16
1-5/8
1-11/16
1-3/4
1-7/8
2
2-1/8
2-1/4
2-3/8
2-1/2
2-5/8
2-3/4
2-7/8
3
3-1/8
3-1/4
3-3/8
3-1/2
3-5/8
3-3/4
3-7/8
4
4-1/8
4-1/4
4-3/8
4-1/2
4-5/8
4-3/4
4-7/8
5
5-1/8
5-1/4
5-3/8
5-1/2
5-5/8
5-3/4
5-7/8
6
6-1/8
6-1/4
6-3/8
6-5/8
6-7/8
7-1/8
7-3/8
7-5/8
7-7/8
8-1/8
8-3/8
8-5/8
8-7/8
9-1/8
9-3/8
9-5/8
9-7/8
10-1/8
10-3/8
10-7/8
11-3/8
11-7/8
12-3/8
13-3/8
14-3/8
15-3/8
16-3/8
17-3/8
18-3/8
19-3/8
20-3/8
21-3/8
22-3/8
23-3/8
24-3/8
25-3/8
26-3/8
5
5-1/8
5-1/4
5-3/8
5-1/2
5-5/8
5-3/4
5-7/8
6
6-1/8
6-1/4
6-3/8
6-1/2
6-3/4
7
7-1/4
7-1/2
7-3/4
8
8-1/4
8-1/2
9
9-1/2
10
10-1/2
11
11-1/2
12
12-1/2
13
13-1/2
14
14-1/2
15
15-1/2
16
16-1/2
17
17-1/2
18
18-1/2
19
19-1/2
20
20-1/2
21-1/2
22-1/2
23-1/2
24-1/2
25-1/2
26-1/2
**
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**
**
**
1/32
3/64
1/16
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3/32
1/8
1/8
1/8
1/8
1/8
1/8
1/8
1/8
1/8
1/8
1/8
1/8
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3/16
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1/4
 
.029±.004
.042±.004
.056±.004
.070±.005
.101±.005
.114±.005
.145±.005
.176±.005
.208±.005
.239±.005
.301±.005
.364±.005
.426±.005
.489±.005
.551±.007
.614±.009
.676±.009
.739±.009
.801±.009
.864±.009
.926±.009
.989±.010
1.051±.010
1.114±.010
1.176±.011
1.239±.011
1.301±.011
1.364±.013
1.489±.013
1.614±.013
1.739±.015
1.864±.015
1.989±.018
2.114±.018
2.239±.018
2.364±.018
2.489±.018
2.614±.020
2.739±.020
2.864±.020
2.989±.024
3.239±.024
3.489±.024
3.739±.027
3.989±.027
4.239±.030
4.489±.030
4.739±.030
4.989±.037
5.239±.037
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1.049±.010
1.112±.010
1.174±.012
1.237±.012
1.299±.012
1.362±.012
1.424±.012
1.487±.012
1.549±.015
1.612±.015
1.674±.015
1.737±.015
1.799±.015
1.862±.015
1.925±.017
1.987±.017
2.050±.017
2.112±.017
2.175±.017
2.237±.017
2.300±.020
2.362±.020
2.425±.020
2.487±.020
2.550±.020
2.612±.020
2.675±.022
2.737±.022
2.800±.022
2.862±.022
2.987±.024
3.237±.024
3.487±.024
3.737±.028
3.987±.028
4.237±.030
4.487±.030
4.737±.030
4.987±.035
5.237±.035
5.487±.035
5.737±.035
5.987±.035
6.237±.040
6.487±.040
6.737±.040
6.987±.040
7.237±.045
7.487±.045
7.737±.045
7.987±.045
8.237±.050
8.487±.050
8.737±.050
8.987±.050
9.237±.055
9.487±.055
9.737±.055
.171±.005
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1.046±.010
1.109±.012
1.171±.012
1.234±.012
1.296±.012
1.359±.012
1.421±.012
1.484±.015
1.609±.015
1.734±.015
1.859±.018
1.984±.018
2.109±.018
2.234±.020
2.359±.020
2.484±.020
2.609±.020
2.734±.024
2.859±.024
2.984±.024
3.109±.024
3.234±.024
3.359±.024
3.484±.024
3.609±.028
3.734±.028
3.859±.028
3.984±.028
4.109±.028
4.234±.030
4.359±.030
4.484±.030
4.609±.030
4.734±.030
4.859±.035
4.984±.035
5.109±.035
5.234±.035
5.359±.035
5.484±.035
5.609±.035
5.734±.035
5.859±.035
5.984±.035
6.234±.040
6.484±.040
6.734±.040
6.984±.040
7.234±.045
7.484±.045
7.734±.045
7.984±.045
8.234±.050
8.484±.050
8.734±.050
8.984±.050
9.234±.055
9.484±.055
9.734±.055
9.984±.055
10.484±.065
10.984±.065
11.484±.065
11.984±.065
12.984±.065
13.984±.065
14.984±.065
15.955±.075
16.955±.080
17.955±.085
.412±.005
.475±.005
.537±.007
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.662±.009
.725±.010
.787±.010
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.975±.010
1.037±.010
1.100±.012
1.162±.012
1.225±.012
1.287±.012
1.350±.012
1.475±.015
1.600±.015
1.725±.015
1.850±.015
1.975±.018
2.100±.018
2.225±.018
2.350±.018
2.475±.020
2.600±.020
2.725±.020
2.850±.020
2.975±.024
3.100±.024
3.225±.024
3.350±.024
3.475±.024
3.600±.028
3.725±.028
3.850±.028
3.975±.028
4.100±.028
4.225±.030
4.350±.030
4.475±.030
4.600±.030
4.725±.030
4.850±.030
4.975±.037
5.100±.037
5.225±.037
5.350±.037
5.475±.037
5.600±.037
5.725±.037
5.850±.037
5.975±.037
6.225±.040
6.475±.040
6.725±.040
6.975±.040
7.225±.045
7.475±.045
7.725±.045
7.975±.045
8.225±.050
8.475±.050
8.725±.050
8.975±.050
9.225±.055
9.475±.055
9.725±.055
9.975±.055
10.475±.060
10.975±.060
11.475±.065
11.975±.065
12.975±.065
13.975±.070
14.975±.070
15.955±.075
16.955±.080
17.955±.085
18.955±.090
19.955±.095
20.955±.095
21.955±.100
22.940±.105
23.940±.110
24.940±.115
25.940±.120
4.475±.033
4.600±.033
4.725±.033
4.850±.033
4.975±.037
5.100±.037
5.225±.037
5.350±.037
5.475±.037
5.600±.037
5.725±.037
5.850±.037
5.975±.037
6.225±.040
6.475±.040
6.725±.040
6.975±.040
7.225±.045
7.475±.045
7.725±.045
7.975±.045
8.475±.055
8.975±.055
9.475±.055
9.975±.055
10.475±.060
10.975±.060
11.475±.060
11.975±.060
12.475±.060
12.975±.060
13.457±.070
13.975±.070
14.475±.070
14.975±.070
15.475±.070
15.955±.075
16.455±.075
16.955±.080
17.455±.085
17.955±.085
18.455±.085
18.955±.090
19.455±.090
19.955±.095
20.955±.095
21.955±.100
22.940±.105
23.940±.110
24.940±.115
25.940±.120
.185±.005
.239±.005
.301±.005
.351±.005
.414±.005
.468±.005
.530±.007
.644±.009
.706±.009
.755±.009
.863±.009
.924±.009
.986±.010
1.047±.010
1.171±.010
1.355±.012
1.475±.014
1.720±.014
2.090±.018
2.337±.018
.040±.003
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.116±.004
.116±.004
 
0.74±0.10
1.07±0.10
1.42±0.10
1.78±0.13
2.57±0.13
2.90±0.13
3.68±0.13
4.47±0.13
5.28±0.13
6.07±0.13
7.65±0.13
9.25±0.13
10.82±0.13
12.42±0.13
14.00±0.18
15.60±0.23
17.17±0.23
18.77±0.23
20.35±0.23
21.95±0.23
23.52±0.23
25.12±0.25
26.70±0.25
28.30±0.25
29.87±0.28
31.47±0.28
33.05±0.28
34.65±0.33
37.82±0.33
41.00±0.33
44.17±0.38
47.35±0.38
50.52±0.46
53.70±0.46
56.87±0.46
60.05±0.46
63.22±0.46
66.40±0.51
69.57±0.51
72.75±0.51
75.92±0.61
82.27±0.61
88.62±0.61
94.97±0.69
101.32±0.69
107.67±0.76
114.02±0.76
120.37±0.76
126.72±0.94
133.07±0.94
1.24±0.13
2.06±0.13
2.84±0.13
3.63±0.13
4.42±0.13
5.23±0.13
6.02±0.13
7.59±0.13
9.19±0.13
10.77±0.13
12.37±0.13
13.94±0.18
15.54±0.23
17.12±0.23
18.72±0.23
20.30±0.25
21.89±0.25
23.47±0.25
25.07±0.25
26.64±0.25
28.24±0.25
29.82±0.30
31.42±0.30
32.99±0.30
34.59±0.30
36.17±0.30
37.77±0.30
39.34±0.38
40.94±0.38
42.52±0.38
44.12±0.38
45.69±0.38
47.30±0.38
48.90±0.43
50.47±0.43
52.07±0.43
53.64±0.43
55.25±0.43
56.82±0.43
58.42±0.51
59.99±0.51
61.60±0.51
63.17±0.51
64.77±0.51
66.34±0.51
67.95±0.56
69.52±0.56
71.12±0.56
72.69±0.56
75.87±0.61
82.22±0.61
88.57±0.61
94.92±0.71
101.27±0.71
107.62±0.76
113.97±0.76
120.32±0.76
126.67±0.89
133.02±0.89
139.37±0.89
145.72±0.89
152.07±0.89
158.42±1.02
164.77±1.02
171.12±1.02
177.47±1.02
183.82±1.14
190.17±1.14
196.52±1.14
202.87±1.14
209.22±1.27
215.57±1.27
221.92±1.27
228.27±1.27
234.62±1.40
240.97±1.40
247.32±1.40
4.34±0.13
5.94±0.13
7.52±0.13
9.12±0.13
10.69±0.13
12.29±0.13
13.87±0.17
15.47±0.23
17.04±0.23
18.64±0.25
20.22±0.25
21.82±0.25
23.39±0.25
25.00±0.25
26.57±0.25
28.17±0.30
29.74±0.30
31.34±0.30
32.92±0.30
34.52±0.30
36.09±0.30
37.69±0.38
40.87±0.38
44.04±0.38
47.22±0.46
50.39±0.46
53.57±0.46
56.74±0.50
59.92±0.50
63.09±0.50
66.27±0.50
69.44±0.61
72.62±0.61
75.79±0.61
78.97±0.61
82.14±0.61
85.32±0.61
88.49±0.61
91.67±0.71
94.84±0.71
98.02±0.71
101.19±0.71
104.37±0.71
107.54±0.76
110.72±0.76
113.89±0.76
117.07±0.76
120.24±0.76
123.42±0.89
126.59±0.89
129.77±0.89
132.94±0.89
136.12±0.89
139.29±0.89
142.47±0.89
145.65±0.89
148.82±0.89
151.99±0.89
158.34±1.02
164.69±1.02
171.04±1.02
177.39±1.02
183.74±1.14
190.09±1.14
196.44±1.14
202.79±1.14
209.14±1.27
215.49±1.27
221.84±1.27
228.19±1.27
234.54±1.40
240.89±1.40
247.24±1.40
253.59±1.40
266.29±1.40
278.99±1.65
291.69±1.65
304.39±1.65
329.79±1.65
355.19±1.65
380.59±1.65
405.26±1.91
430.66±2.03
456.06±2.16
10.46±0.13
12.07±0.13
13.64±0.18
15.24±0.23
16.81±0.23
18.42±0.25
19.99±0.25
21.59±0.25
23.16±0.25
24.77±0.25
26.34±0.25
27.94±0.30
29.51±0.30
31.12±0.30
32.69±0.30
34.29±0.30
37.47±0.38
40.64±0.38
43.82±0.38
46.99±0.38
50.17±0.46
53.34±0.46
56.52±0.46
59.69±0.46
62.87±0.51
66.04±0.51
69.22±0.51
72.39±0.51
75.57±0.61
78.74±0.61
81.92±0.61
85.09±0.61
88.27±0.61
91.44±0.71
94.62±0.71
97.79±0.71
100.97±0.71
104.14±0.71
107.32±0.76
110.49±0.76
113.67±0.76
116.84±0.76
120.02±0.76
123.19±0.76
126.37±0.94
129.54±0.94
132.72±0.94
135.89±0.94
139.07±0.94
142.24±0.94
145.42±0.94
148.59±0.94
151.77±0.94
158.12±1.02
164.47±1.02
170.82±1.02
177.17±1.02
183.52±1.14
189.87±1.14
196.22±1.14
202.57±1.14
208.92±1.27
215.27±1.27
221.62±1.27
227.97±1.27
234.32±1.40
240.67±1.40
247.02±1.40
253.37±1.40
266.07±1.52
278.77±1.52
291.47±1.65
304.17±1.65
329.57±1.65
354.97±1.78
380.37±1.78
405.26±1.91
430.66±2.03
456.06±2.16
481.41±2.29
506.81±2.41
532.21±2.41
557.61±2.54
582.68±2.67
608.08±2.79
633.48±2.92
658.88±3.05
113.67±0.84
116.84±0.84
120.02±0.84
123.19±0.84
126.37±0.94
129.54±0.94
132.72±0.94
135.89±0.94
139.07±0.94
142.24±0.94
145.42±0.94
148.59±0.94
151.77±0.94
158.12±1.02
164.47±1.02
170.82±1.02
177.17±1.02
183.52±1.14
189.87±1.14
196.22±1.14
202.57±1.14
215.27±1.40
227.97±1.40
240.67±1.40
253.37±1.40
266.07±1.52
278.77±1.52
291.47±1.52
304.17±1.52
316.87±1.52
329.57±1.52
342.27±1.78
354.97±1.78
367.67±1.78
380.37±1.78
393.07±1.78
405.26±1.91
417.96±1.91
430.66±2.03
443.36±2.16
456.06±2.16
468.76±2.16
481.46±2.29
494.16±2.29
506.86±2.41
532.26±2.41
557.66±2.54
582.68±2.67
608.08±2.79
633.48±2.92
658.88±3.05
4.70±0.13
6.07±0.13
7.65±0.13
8.92±0.13
10.52±0.13
11.89±0.13
13.46±0.18
16.36±0.23
17.93±0.23
19.18±0.23
21.92±0.23
23.47±0.23
25.04±0.26
26.59±0.26
29.74±0.26
34.42±0.30
37.47±0.36
43.69±0.36
53.09±0.46
59.36±0.46
1.02±0.08
1.27±0.08
1.52±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
1.78±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
2.62±0.08
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
3.53±0.10
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
5.33±0.13
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
6.99±0.15
1.42±0.08
1.63±0.08
1.63±0.08
1.83±0.08
1.83±0.08
1.98±0.08
2.08±0.08
2.21±0.08
2.46±0.08
2.46±0.08
2.95±0.10
2.95±0.10
2.95±0.10
2.95±0.10
2.95±0.10
2.95±0.10
3.00±0.10
3.00±0.10
3.00±0.10
3.00±0.10

Links to the AS-568 O-ring Compounds to order your O-Rings:

Buna-N O-Rings 70D, -40° to +250°F, Most Common
Buna-N O-Rings 90D, -40° to +250°F, High Pressure Applications
Colored O-Rings Buna-N, -40° to +250°F, Size Identification
Aflas O-Rings 80D, -14°F to +428°F, Oil Field
Buna-N FDA O-Rings, -40° to +250°F,
Buna-N FDA O-Rings, -40° to +250°F, White
Buna-N Mil-Spec, -65° to +275°F,
Buna-N O-Rings 50D, -40° to +250°F, Static Seals
EPDM Colored O-Rings, -65° to +300°F,
EPDM O-Rings FDA, -65° to +300°F, Brake Fluid, Steam, Water, Beer, Whisky and Wine
Fluorosilicone 70D, -76° to +392°F, Fuels and Aerospace
HNBR O-Rings 70 Green, -25° to +300°F, ATF, Automotive Refrigerants, Oils
Hydraulic Boss O-Rings, SAE Straight Thread O-Ring
Neoprene O-Rings, -40° to +250°F, Refrigerants, Weather, and Water
Perfluoroelastomer (FFKM), -5° to +608°F, Chemical Rresistance
Silicone O-Rings FDA, -80° to +400°F, Food, Medical, Beer, Whiskey and Milk
Teflon Coated O Rings, Color Dry Film Lubricants
Teflon Encapsulated O-Rings, Chemically Inert
Teflon O-Rings - PTFE, -328° to +500°F, Chemically Inert Crush Seal
UC70 Cast Urethane, High Performance Hydraulics and Pneumatics
UC90 Cast Urethane, High Performance Hydraulics and Pneumatics
Urethane O-Rings 70D, Hydraulic and Pneumatic Applications
Urethane O-Rings 90D, Hydraulic and Pneumatic Applications
Viton Extreme (ETP), -8° to +482°F, Extreme Chemical Resistant
Viton GFLT O-Rings, -32° to +482°F, MTBE, Methanol, Ethanol (Flex Fuel)
Viton O-Rings 75D Black, -40° to +400°F, Chemical Resistant
Viton O-Rings 75D Brown, -40° to +400°F, Chemical Resistant
Viton O-Rings 75D FDA, -40° to +400°F, High Temp, Milk and Edible Oil
Viton O-Rings 75D Green, -40° to +400°F Chemical Resistant
Viton O-Rings 75D Mil-Spec, -13° to +482°F, Chemical Resistant
Viton O-Rings 90D, -40° to +400°F, Chemical Resistant

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 fittings.