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.139" Cross Section O-Rings (Nominal Size 1/8" Cross Section)

.070" Cross Section
.210" Cross Section
.103" Cross Section
.275" Cross Section
.139" Cross Section
All Other O-Rings
 
--Actual Inches
Actual Millimeters
AS 568
Dash #
Inside
Diameter
Tol.
Cross
Section
Tol.
Inside
Diameter
Tol.
Cross
Section
Tol.
-201
.171
.005
.139
.004
4.34
0.13
3.53
.010
-202
.234
.005
.139
.004
5.94
0.13
3.53
.010
-203
.296
.005
.139
.004
7.52
0.13
3.53
.010
-204
.359
.005
.139
.004
9.12
0.13
3.53
.010
-205
.421
.005
.139
.004
10.69
0.13
3.53
.010
-206
.484
.005
.139
.004
12.29
0.13
3.53
.010
-207
.546
.007
.139
.004
13.87
0.18
3.53
.010
-208
.609
.009
.139
.004
15.47
0.23
3.53
.010
-209
.671
.009
.139
.004
17.04
0.23
3.53
.010
-210
.734
.010
.139
.004
18.64
0.25
3.53
.010
-211
.796
.010
.139
.004
20.22
0.25
3.53
.010
-212
.859
.010
.139
.004
21.82
0.25
3.53
.010
-213
.921
.010
.139
.004
23.39
0.25
3.53
.010
-214
.984
.010
.139
.004
24.99
0.25
3.53
.010
-215
1.046
.010
.139
.004
26.57
0.25
3.53
.010
-216
1.109
.012
.139
.004
28.17
0.30
3.53
.010
-217
1.171
.012
.139
.004
29.74
0.30
3.53
.010
-218
1.234
.012
.139
.004
31.34
0.30
3.53
.010
-219
1.296
.012
.139
.004
32.92
0.30
3.53
.010
-220
1.359
.012
.139
.004
34.52
0.30
3.53
.010
-221
1.421
.012
.139
.004
36.09
0.30
3.53
.010
-222
1.484
.015
.139
.004
37.69
0.38
3.53
.010
-223
1.609
.015
.139
.004
40.87
0.38
3.53
.010
-224
1.734
.015
.139
.004
44.04
0.38
3.53
.010
-225
1.859
.018
.139
.004
47.22
0.46
3.53
.010
-226
1.984
.018
.139
.004
50.39
0.46
3.53
.010
-227
2.109
.018
.139
.004
53.57
0.46
3.53
.010
-228
2.234
.020
.139
.004
56.74
0.51
3.53
.010
-229
2.359
.020
.139
.004
59.92
0.51
3.53
.010
-230
2.484
.020
.139
.004
63.09
0.51
3.53
.010
-231
2.609
.020
.139
.004
66.27
0.51
3.53
.010
-232
2.734
.024
.139
.004
69.44
0.61
3.53
.010
-233
2.859
.024
.139
.004
72.62
0.61
3.53
.010
-234
2.984
.024
.139
.004
75.79
0.61
3.53
.010
-235
3.109
.024
.139
.004
78.97
0.61
3.53
.010
-236
3.234
.024
.139
.004
82.14
0.61
3.53
.010
-237
3.359
.024
.139
.004
85.32
0.61
3.53
.010
-238
3.484
.024
.139
.004
88.49
0.61
3.53
.010
-239
3.609
.024
.139
.004
91.67
0.61
3.53
.010
-240
3.734
.028
.139
.004
94.84
0.71
3.53
.010
-241
3.859
.028
.139
.004
98.02
0.71
3.53
.010
-242
3.984
.028
.139
.004
101.19
0.71
3.53
.010
-243
4.109
.028
.139
.004
104.37
0.71
3.53
.010
-244
4.234
.030
.139
.004
107.54
0.76
3.53
.010
-245
4.359
.030
.139
.004
110.72
0.76
3.53
.010
-246
4.484
.030
.139
.004
113.89
0.76
3.53
.010
247
4.609
.030
.139
.004
117.07
0.76
3.53
.010
-248
4.734
.030
.139
.004
120.24
0.76
3.53
.010
-249
4.859
.035
.139
.004
123.42
0.89
3.53
.010
-250
4.984
.035
.139
.004
126.59
0.89
3.53
.010
-251
5.109
.035
.139
.004
129.77
0.89
3.53
.010
-252
5.234
.035
.139
.004
132.94
0.89
3.53
.010
-253
5.359
.035
.139
.004
136.12
0.89
3.53
.010
-254
5.484
.035
.139
.004
139.29
0.89
3.53
.010
-255
5.609
.035
.139
.004
142.47
0.89
3.53
.010
-256
5.734
.035
.139
.004
145.64
0.89
3.53
.010
-257
5.859
.035
.139
.004
148.82
0.89
3.53
.010
-258
5.984
.035
.139
.004
151.99
0.89
3.53
.010
-259
6.234
.040
.139
.004
158.34
1.02
3.53
.010
-260
6.484
.040
.139
.004
164.69
1.02
3.53
.010
-261
6.734
.040
.139
.004
171.04
1.02
3.53
.010
-262
6.984
.040
.139
.004
177.39
1.02
3.53
.010
-263
7.234
.045
.139
.004
183.74
1.14
3.53
.010
-264
7.484
.045
.139
.004
190.09
1.14
3.53
.010
-265
7.734
.045
.139
.004
196.44
1.14
3.53
.010
-266
7.984
.045
.139
.004
202.79
1.14
3.53
.010
-267
8.234
.050
.139
.004
209.14
1.27
3.53
.010
-268
8.484
.050
.139
.004
215.49
1.27
3.53
.010
-269
8.734
.050
.139
.004
221.84
1.27
3.53
.010
-270
8.984
.050
.139
.004
228.19
1.27
3.53
.010
-271
9.234
.055
.139
.004
234.54
1.40
3.53
.010
-272
9.484
.055
.139
.004
240.89
1.40
3.53
.010
-273
9.734
.055
.139
.004
247.24
1.40
3.53
.010
-274
9.984
.055
.139
.004
253.59
1.40
3.53
.010
-275
10.484
.055
.139
.004
266.29
1.40
3.53
.010
-276
10.984
.065
.139
.004
278.99
1.65
3.53
.010
-277
11.484
.065
.139
.004
291.69
1.65
3.53
.010
-278
11.984
.065
.139
.004
304.39
1.65
3.53
.010
-279
12.984
.065
.139
.004
329.79
1.65
3.53
.010
-280
13.984
.065
.139
.004
355.19
1.65
3.53
.010
-281
14.984
.065
.139
.004
380.59
1.65
3.53
.010
-282
15.955
.075
.139
.004
405.26
1.91
3.53
.010
-283
16.955
.080
.139
.004
430.66
2.03
3.53
.010
-284
17.955
.085
.139
.004
456.06
2.16
3.53
.010
A full part number is generated by inserting the material identifier between AS568- and -*** with *** being the size of the O-Ring. Some examples of the many materials we can make any of these O-Rings in are:

Examples of Some Common Material Identifiers
NE50: Neoprene, 50 Durometer
NE70: Neoprene, 70 Durometer
NI60: Nitrile (Buna-N), 60 Durometer
EP60: EPDM, 60 Durometer
1056: Silver Plated Aluminum filled Silicone
1167: Silver Plated Copper filled Fluorosilicone
FS70: Fluorosilicone, 70 Durometer
SI70: Silicone, 70 Durometer
Examples of full part numbers are:

AS568-SI70-259 - This indicates a -259 size, as per the chart above, in a 70 Durometer Silicone

1056-0275 - This indicates a -275 size, as per the chart above, in a Silver Plated Aluminum filled Silicone (see EMI/RFI Shielding section for more information)
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