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 -201 through
-284
|
No.
|
I.D."
|
Actual
|
O.D."
|
No.
|
I.D."
|
Actual
|
O.D."
|
No.
|
I.D."
|
Actual
|
O.D."
|
|
-201
|
3/16
|
0.171
|
7/16
|
-229
|
2-3/8
|
2.359
|
2-5/8
|
-257
|
5-7/8
|
5.859
|
6-1/8
|
|
-202
|
1/4
|
0.234
|
1/2
|
-230
|
2-1/2
|
2.484
|
2-3/4
|
-258
|
6
|
5.984
|
6-1/4
|
|
-203
|
5/16
|
.0296
|
9/16
|
-231
|
2-5/8
|
2.609
|
2-7/8
|
-259
|
6-1/4
|
6.234
|
6-1/2
|
|
-204
|
3/8
|
0.359
|
5/8
|
-232
|
2-3/4
|
2.734
|
3
|
-260
|
6-1/2
|
6.484
|
6-3/4
|
|
-205
|
7/16
|
0.421
|
11/16
|
-233
|
2-7/8
|
2.859
|
3-1/8
|
-261
|
6-3/4
|
6.734
|
7
|
|
-206
|
1/2
|
0.484
|
3/4
|
-234
|
3
|
2.984
|
3-1/4
|
-262
|
7
|
6.984
|
7-1/4
|
|
-207
|
9/16
|
0.546
|
13/16
|
-235
|
3-1/8
|
3.109
|
3-3/8
|
-263
|
7-1/4
|
7.234
|
7-1/2
|
|
-208
|
5/8
|
0.609
|
7/8
|
-236
|
3-1/4
|
3.234
|
3-1/2
|
-264
|
7-1/2
|
7.484
|
7-3/4
|
|
-209
|
11/16
|
0.671
|
15/16
|
-237
|
3-3/8
|
3.359
|
3-5/8
|
-265
|
7-3/4
|
7.734
|
8
|
|
-210
|
3/4
|
0.734
|
1
|
-238
|
3-1/2
|
3.484
|
3-3/4
|
-266
|
8
|
7.984
|
8-1/4
|
|
-211
|
13/16
|
0.796
|
1-1/16
|
-239
|
3-5/8
|
3.609
|
3-7/8
|
-267
|
8-1/4
|
8.234
|
8-1/2
|
|
-212
|
7/8
|
0.859
|
1-1/8
|
-240
|
3-3/4
|
3.734
|
4
|
-268
|
8-1/2
|
8.484
|
8-3/4
|
|
-213
|
15/16
|
0.921
|
1-3/16
|
-241
|
3-7/8
|
3.859
|
4-1/8
|
-269
|
8-3/4
|
8.734
|
9
|
|
-214
|
1
|
0.984
|
1-1/4
|
-242
|
4
|
3.984
|
4-1/4
|
-270
|
9
|
8.984
|
9-1/4
|
|
-215
|
1-1/16
|
1.046
|
1-5/16
|
-243
|
4-1/8
|
4.109
|
4-3/8
|
-271
|
9-1/4
|
9.234
|
9-1/2
|
|
-216
|
1-1/8
|
1.109
|
1-3/8
|
-244
|
4-1/4
|
4.234
|
4-1/2
|
-272
|
9-1/2
|
9.484
|
9-3/4
|
|
-217
|
1-3/16
|
1.171
|
1-7/16
|
-245
|
4-3/8
|
4.359
|
4-5/8
|
-273
|
9-3/4
|
9.734
|
10
|
|
-218
|
1-1/4
|
1.234
|
1-1/2
|
-246
|
4-1/2
|
4.484
|
4-3/4
|
-274
|
10
|
9.984
|
10-1/4
|
|
-219
|
1-5/16
|
1.296
|
1-9/16
|
-247
|
4-5/8
|
4.609
|
4-7/8
|
-275
|
10-1/2
|
10.484
|
10-3/4
|
|
-220
|
1-3/8
|
1.359
|
1-5/8
|
-248
|
4-3/4
|
4.734
|
5
|
-276
|
11
|
10.984
|
11-1/4
|
|
-221
|
1-7/16
|
1.421
|
1-11/16
|
-249
|
4-7/8
|
4.859
|
5-1/8
|
-277
|
11-1/2
|
11.484
|
11-3/4
|
|
-222
|
1-1/2
|
1.484
|
1-3/4
|
-250
|
5
|
4.984
|
5-1/4
|
-278
|
12
|
11.984
|
12-1/4
|
|
-223
|
1-5/8
|
1.609
|
1-7/8
|
-251
|
5-1/8
|
5.109
|
5-3/8
|
-279
|
13
|
12.984
|
13-1/4
|
|
-224
|
1-3/4
|
1.734
|
2
|
-252
|
5-1/4
|
5.234
|
5-1/2
|
-280
|
14
|
13.984
|
14-1/4
|
|
-225
|
1-7/8
|
1.859
|
2-1/8
|
-253
|
5-3/8
|
5.359
|
5-5/8
|
-281
|
15
|
14.984
|
15-1/4
|
|
-226
|
2
|
1.984
|
2-1/4
|
-254
|
5-1/2
|
5.484
|
5-3/4
|
-282
|
16
|
15.955
|
16-1/4
|
|
-227
|
2-1/8
|
2.109
|
2-3/4
|
-255
|
5-5/8
|
5.609
|
5-7/8
|
-283
|
17
|
16.955
|
17-1/4
|
|
-228
|
2-1/4
|
2.234
|
2-1/2
|
-256
|
5-3/4
|
5.734
|
6
|
-284
|
18
|
17.955
|
18-1/4
|
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|