how an o-ring functions
\ physical
properties of o-ring compounds \ types of seals \ general design and gland
dimensions \ standard
o-ring sizes and dimensions \ compound
information
|
Standard
O-Ring Sizes and Dimensions
|
|
dash numbers correlate to the AS568A numbering
system.
|
|
AS568A -309 through
-395
|
3/16"
Cross-Section (w), actual .210"
|
|
No.
|
I.D."
|
Actual
|
O.D."
|
No.
|
I.D."
|
Actual
|
O.D."
|
No.
|
I.D."
|
Actual
|
O.D."
|
|
-309
|
7/16
|
0.412
|
13/16
|
-338
|
3-1/8
|
3.100
|
3-1/2
|
-367
|
7-1/2
|
7.475
|
7-7/8
|
|
-310
|
1/2
|
0.475
|
7/8
|
-339
|
3-1/4
|
3.225
|
3-5/8
|
-368
|
7-3/4
|
7.725
|
8-1/8
|
|
-311
|
9/16
|
0.537
|
15/16
|
-340
|
3-3/8
|
3.350
|
3-3/4
|
-369
|
8
|
7.975
|
8-3/8
|
|
-312
|
5/8
|
0.600
|
1
|
-341
|
3-1/2
|
3.475
|
3-7/8
|
-370
|
8-1/4
|
8.225
|
8-5/8
|
|
-313
|
11/16
|
0.662
|
1-1/16
|
-342
|
3-5/8
|
3.600
|
4
|
-371
|
8-1/2
|
8.475
|
8-7/8
|
|
-314
|
3/4
|
0.725
|
1-1/8
|
-343
|
3-3/4
|
3.725
|
4-1/8
|
-372
|
8-3/4
|
8.725
|
9-1/8
|
|
-315
|
13/16
|
0.787
|
1-3/16
|
-344
|
3-7/8
|
3.850
|
4-1/4
|
-373
|
9
|
8.975
|
9-3/8
|
|
-316
|
7/8
|
0.850
|
1-1/4
|
-345
|
4
|
3.975
|
3-3/8
|
-374
|
9-1/4
|
9.225
|
9-5/8
|
|
-317
|
15/16
|
0.912
|
1-5/16
|
-346
|
4-1/8
|
4.100
|
4-1/2
|
-375
|
9-1/2
|
9.475
|
9-7/8
|
|
-318
|
1
|
0.975
|
1-3/8
|
-347
|
4-1/4
|
4.225
|
4-5/8
|
-376
|
9-3/4
|
9.725
|
10-1/8
|
|
-319
|
1-1/16
|
1.037
|
1-7/16
|
-348
|
4-3/8
|
4.350
|
4-3/4
|
-377
|
10
|
9.975
|
10-3/8
|
|
-320
|
1-1/8
|
1.100
|
1-1/2
|
-349
|
4-1/2
|
4.475
|
4-7/8
|
-378
|
10-1/2
|
10.475
|
10-7/8
|
|
-321
|
1-3/16
|
1.162
|
1-9/16
|
-350
|
4-5/8
|
4.600
|
5
|
-379
|
11
|
10.975
|
11-3/8
|
|
-322
|
1-1/4
|
1.225
|
1-5/8
|
-351
|
4-3/4
|
4.725
|
5-1/8
|
-380
|
11-1/2
|
11.475
|
11-7/8
|
|
-323
|
1-5/16
|
1.287
|
1-11/16
|
-352
|
3-7/8
|
4.850
|
5-1/4
|
-381
|
12
|
11.975
|
12-3/8
|
|
-324
|
1-3/8
|
1.350
|
1-3/4
|
-353
|
5
|
4.975
|
5-3/8
|
-382
|
13
|
12.975
|
13-3/8
|
|
-325
|
1-1/2
|
1.475
|
1-7/8
|
-354
|
5-1/8
|
5.100
|
5-1/2
|
-383
|
14
|
13.975
|
14-3/8
|
|
-326
|
1-5/8
|
1.600
|
2
|
-355
|
5-1/4
|
5.225
|
5-5/8
|
-384
|
15
|
14.975
|
15-3/8
|
|
-327
|
1-3/4
|
1.725
|
2-1/8
|
-356
|
5-3/8
|
5.350
|
5-3/4
|
-385
|
16
|
15.955
|
16-3/8
|
|
-328
|
1-7/8
|
1.850
|
2-1/4
|
-357
|
5-1/2
|
5.475
|
5-7/8
|
-386
|
17
|
16.955
|
17-3/8
|
|
-329
|
2
|
1.975
|
2-3/8
|
-358
|
5-5/8
|
5.600
|
6
|
-387
|
18
|
17.955
|
18-3/8
|
|
-330
|
2-1/8
|
2.100
|
2-1/2
|
-359
|
5-3/4
|
5.725
|
6-1/8
|
-388
|
19
|
18.955
|
19-3/8
|
|
-331
|
2-1/4
|
2.225
|
2-5/8
|
-360
|
5-7/8
|
5.850
|
6-1/4
|
-389
|
20
|
19.955
|
20-3/8
|
|
-332
|
3-3/8
|
2.350
|
2-3/4
|
-361
|
6
|
5.975
|
3-3/8
|
-390
|
21
|
20.955
|
21-3/8
|
|
-333
|
2-1/2
|
2.475
|
2-7/8
|
-362
|
6-1/4
|
6.225
|
6-5/8
|
-391
|
22
|
21.955
|
22-3/8
|
|
-334
|
2-5/8
|
2.600
|
3
|
-363
|
6-/12
|
6.475
|
6-7/8
|
-392
|
23
|
22.940
|
23-3/8
|
|
-335
|
2-3/4
|
2.725
|
3-1/8
|
-364
|
6-3/4
|
6.725
|
7-1/8
|
-393
|
24
|
23.940
|
24-3/8
|
|
-336
|
2-7/8
|
2.850
|
3-1/4
|
-365
|
7
|
6.975
|
7-3/8
|
-394
|
25
|
24.940
|
25-3/8
|
|
-337
|
3
|
2.975
|
3-3/8
|
-366
|
7-1/4
|
7.225
|
7-5/8
|
-395
|
26
|
25.940
|
26-3/8
|
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|