AS568 Neoprene O-Rings

Standard O-Rings are available in 369 sizes as set up by the Aerospace Standard 568 published by the Society of Automotive Engineers. These sizes are designated by dash numbers shown on the 568 DASH Chart and are standardized by imperial dimensions. Standard O-Rings are specified by their inside diameter and cross section width. AS568 is the most commonly used standard in the U.S. for aerospace, automotive and general industrial applications.For more information, please see: Comparison Properties Chart, PTFE Encapsulated O-rings, Material Shelf Life, and O-ring Groove Design Chart.

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Cross Section Width (in)

Cross Section Width (mm)

Inside Diameter (mm)

Inside Diameter (in)

Item #	IntegrationID	Type	Material	Cross Section Width	Durometer	Inside Diameter	Cross Section Tolerance +/-	Inside Diameter Tolerance +/-	Size Reference - AS568	Units of Measure	Tube Size O.D.	Call for a Quote	O-Ring Industries

-158 C-70	N/A 191725	N/A	N/A	N/A 0.103 in2.62 mm	N/A 70	N/A 120.32 mm4.737 in	N/A 0.003 in0.08 mm	N/A 0.030 in0.76 mm	N/A -158	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-048 C-70	N/A 191666	N/A	N/A	N/A 0.070 in1.78 mm	N/A 70	N/A 120.37 mm4.739 in	N/A 0.003 in0.08 mm	N/A 0.030 in0.76 mm	N/A -048	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-352 C-70	N/A 191873	N/A	N/A	N/A 0.210 in5.33 mm	N/A 70	N/A 123.19 mm4.850 in	N/A 0.005 in0.12 mm	N/A 0.030 in0.76 mm	N/A -352	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-428 C-70	N/A 191945	N/A	N/A	N/A 0.275 in6.99 mm	N/A 70	N/A 123.19 mm4.850 in	N/A 0.006 in0.15 mm	N/A 0.033 in0.83 mm	N/A -428	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-249 C-70	N/A 191794	N/A	N/A	N/A 0.139 in3.53 mm	N/A 70	N/A 123.42 mm4.859 in	N/A 0.004 in0.10 mm	N/A 0.035 in0.89 mm	N/A -249	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-353 C-70	N/A 191874	N/A	N/A	N/A 0.210 in5.33 mm	N/A 70	N/A 126.37 mm4.975 in	N/A 0.005 in0.12 mm	N/A 0.037 in0.94 mm	N/A -353	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-429 C-70	N/A 191946	N/A	N/A	N/A 0.275 in6.99 mm	N/A 70	N/A 126.37 mm4.975 in	N/A 0.006 in0.15 mm	N/A 0.037 in0.93 mm	N/A -429	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-250 C-70	N/A 191795	N/A	N/A	N/A 0.139 in3.53 mm	N/A 70	N/A 126.59 mm4.984 in	N/A 0.004 in0.10 mm	N/A 0.035 in0.89 mm	N/A -250	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-159 C-70	N/A 191726	N/A	N/A	N/A 0.103 in2.62 mm	N/A 70	N/A 126.67 mm4.987 in	N/A 0.003 in0.08 mm	N/A 0.035 in0.89 mm	N/A -159	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-049 C-70	N/A 191667	N/A	N/A	N/A 0.070 in1.78 mm	N/A 70	N/A 126.72 mm4.989 in	N/A 0.003 in0.08 mm	N/A 0.037 in0.94 mm	N/A -049	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-354 C-70	N/A 191875	N/A	N/A	N/A 0.210 in5.33 mm	N/A 70	N/A 129.54 mm5.100 in	N/A 0.005 in0.12 mm	N/A 0.037 in0.94 mm	N/A -354	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-430 C-70	N/A 191947	N/A	N/A	N/A 0.275 in6.99 mm	N/A 70	N/A 129.54 mm5.100 in	N/A 0.006 in0.15 mm	N/A 0.037 in0.93 mm	N/A -430	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-251 C-70	N/A 191796	N/A	N/A	N/A 0.139 in3.53 mm	N/A 70	N/A 129.77 mm5.109 in	N/A 0.004 in0.10 mm	N/A 0.035 in0.89 mm	N/A -251	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-311 C-70	N/A 191832	N/A	N/A	N/A 0.210 in5.33 mm	N/A 70	N/A 13.64 mm0.537 in	N/A 0.005 in0.12 mm	N/A 0.007 in0.17 mm	N/A -311	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-207 C-70	N/A 191752	N/A	N/A	N/A 0.139 in3.53 mm	N/A 70	N/A 13.87 mm0.546 in	N/A 0.004 in0.10 mm	N/A 0.007 in0.17 mm	N/A -207	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-113 C-70	N/A 191680	N/A	N/A	N/A 0.103 in2.62 mm	N/A 70	N/A 13.94 mm0.549 in	N/A 0.003 in0.08 mm	N/A 0.005 in0.17 mm	N/A -113	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-355 C-70	N/A 191876	N/A	N/A	N/A 0.210 in5.33 mm	N/A 70	N/A 132.72 mm5.225 in	N/A 0.005 in0.12 mm	N/A 0.037 in0.94 mm	N/A -355	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-431 C-70	N/A 191948	N/A	N/A	N/A 0.275 in6.99 mm	N/A 70	N/A 132.72 mm5.225 in	N/A 0.006 in0.15 mm	N/A 0.037 in0.93 mm	N/A -431	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-252 C-70	N/A 191797	N/A	N/A	N/A 0.139 in3.53 mm	N/A 70	N/A 132.94 mm5.234 in	N/A 0.004 in0.10 mm	N/A 0.035 in0.89 mm	N/A -252	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-160 C-70	N/A 191727	N/A	N/A	N/A 0.103 in2.62 mm	N/A 70	N/A 133.02 mm5.237 in	N/A 0.003 in0.08 mm	N/A 0.035 in0.89 mm	N/A -160	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-050 C-70	N/A 191668	N/A	N/A	N/A 0.070 in1.78 mm	N/A 70	N/A 133.07 mm5.239 in	N/A 0.003 in0.08 mm	N/A 0.037 in0.94 mm	N/A -050	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-356 C-70	N/A 191877	N/A	N/A	N/A 0.210 in5.33 mm	N/A 70	N/A 135.89 mm5.350 in	N/A 0.005 in0.12 mm	N/A 0.037 in0.94 mm	N/A -356	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-432 C-70	N/A 191949	N/A	N/A	N/A 0.275 in6.99 mm	N/A 70	N/A 135.89 mm5.350 in	N/A 0.006 in0.15 mm	N/A 0.037 in0.93 mm	N/A -432	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-253 C-70	N/A 191798	N/A	N/A	N/A 0.139 in3.53 mm	N/A 70	N/A 136.12 mm5.359 in	N/A 0.004 in0.10 mm	N/A 0.035 in0.89 mm	N/A -253	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
-357 C-70	N/A 191878	N/A	N/A	N/A 0.210 in5.33 mm	N/A 70	N/A 139.07 mm5.475 in	N/A 0.005 in0.12 mm	N/A 0.037 in0.94 mm	N/A -357	N/A	N/A	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.

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No Preference
0.74
1.07
1.24
1.42
1.78
10.46
10.69
10.77
10.82
100.97
101.19
101.27
101.32
104.14
104.37
107.32
107.54
107.62
107.67
110.49
110.72
113.67
113.89
113.97
114.02
116.84
117.07
12.07
12.29
12.37
12.42
120.02
120.24
120.32
120.37
123.19
123.42
126.37
126.59
126.67
126.72
129.54
129.77
13.64
13.87
13.94
132.72
132.94
133.02
133.07
135.89
136.12
139.07
139.29
139.37
14.00
142.24
142.47
145.42
145.64
145.72
148.59
148.82
15.24
15.47
15.54
15.60
151.77
151.99
152.07
158.12
158.34
158.42
16.81
164.47
164.69
164.77
17.04
17.12
17.17
170.82
171.04
171.12
177.17
177.39
177.47
18.42
18.64
18.72
18.77
183.52
183.74
183.82
189.87
19.99
190.09
190.17
196.22
196.44
196.52
2.06
2.57
2.84
2.90
20.22
20.29
20.35
202.57
202.79
202.87
208.92
209.14
209.22
21.59
21.82
21.89
21.95
215.27
215.49
215.57
221.62
221.84
221.92
227.97
228.19
228.27
23.16
23.39
23.47
23.52
234.32
234.54
234.62
24.77
24.99
240.67
240.89
240.97
247.02
247.24
247.32
25.07
25.12
253.37
253.59
26.34
26.57
26.64
26.70
266.07
266.29
27.94
278.77
278.99
28.17
28.24
28.30
29.51
29.74
29.82
29.87
291.47
291.69
3.63
3.68
304.17
304.39
31.12
31.34
31.42
31.47
316.87
32.69
32.92
32.99
329.55
329.57
329.79
33.05
34.29
34.52
34.59
34.65
342.27
354.97
355.19
36.09
36.17
367.67
37.47
37.69
37.77
37.82
380.37
380.59
39.34
393.07
4.34
4.42
4.47
40.64
40.87
40.94
405.26
41.00
417.96
42.52
43.82
430.66
44.04
44.12
44.17
443.36
45.69
456.06
46.99
468.76
47.22
47.29
47.35
48.90
481.46
494.16
5.23
5.28
5.94
50.17
50.39
50.47
50.52
506.86
52.07
53.34
53.57
53.64
53.70
532.26
55.25
557.66
56.52
56.74
56.82
56.87
58.42
582.65
59.69
59.92
59.99
6.02
6.07
60.05
608.10
61.60
62.87
63.09
63.17
63.22
633.50
64.77
658.85
658.88
66.04
66.27
66.34
66.40
67.95
69.22
69.44
69.52
69.57
7.52
7.59
7.65
71.12
72.39
72.62
72.69
72.75
75.57
75.79
75.87
75.92
78.74
78.97
81.92
82.14
82.22
82.27
85.09
85.32
88.27
88.49
88.57
88.62
9.12
9.19
9.25
91.44
91.67
94.62
94.84
94.92
94.97
97.79
98.02

No Preference
0.029
0.042
0.049
0.056
0.070
0.081
0.101
0.112
0.114
0.143
0.145
0.171
0.174
0.176
0.185
0.206
0.208
0.234
0.237
0.239
0.296
0.299
0.300
0.301
0.351
0.359
0.362
0.364
0.412
0.414
0.421
0.424
0.426
0.468
0.475
0.484
0.487
0.489
0.530
0.537
0.546
0.549
0.551
0.600
0.609
0.612
0.614
0.644
0.662
0.671
0.674
0.676
0.706
0.725
0.734
0.737
0.739
0.755
0.787
0.796
0.799
0.801
0.850
0.859
0.862
0.863
0.864
0.912
0.921
0.924
0.926
0.975
0.984
0.986
0.987
0.989
1.037
1.046
1.047
1.049
1.051
1.100
1.109
1.112
1.114
1.162
1.171
1.174
1.176
1.225
1.234
1.237
1.239
1.287
1.296
1.299
1.301
1.350
1.355
1.359
1.362
1.364
1.421
1.424
1.475
1.484
1.487
1.489
1.549
1.600
1.609
1.612
1.614
1.674
1.720
1.725
1.734
1.737
1.739
1.799
1.850
1.859
1.862
1.864
1.925
1.975
1.984
1.987
1.989
10.475
10.484
10.975
10.984
11.475
11.484
11.975
11.984
12.475
12.975
12.984
13.475
13.975
13.984
14.475
14.975
14.984
15.475
15.955
16.455
16.955
17.455
17.955
18.455
18.955
19.455
19.955
2.050
2.090
2.100
2.109
2.112
2.114
2.175
2.225
2.234
2.237
2.239
2.300
2.337
2.350
2.359
2.362
2.364
2.425
2.475
2.484
2.487
2.489
2.550
2.600
2.609
2.612
2.614
2.675
2.725
2.734
2.737
2.739
2.800
2.850
2.859
2.862
2.864
2.975
2.984
2.987
2.989
20.955
21.955
22.940
23.940
24.940
25.940
3.100
3.109
3.225
3.234
3.237
3.239
3.350
3.359
3.475
3.484
3.487
3.489
3.600
3.609
3.725
3.734
3.737
3.739
3.850
3.859
3.975
3.984
3.987
3.989
4.100
4.109
4.225
4.234
4.237
4.239
4.350
4.359
4.475
4.484
4.487
4.489
4.600
4.609
4.725
4.734
4.737
4.739
4.850
4.859
4.975
4.984
4.987
4.989
5.100
5.109
5.225
5.234
5.237
5.239
5.350
5.359
5.475
5.484
5.487
5.600
5.609
5.725
5.734
5.737
5.850
5.859
5.975
5.984
5.987
6.225
6.234
6.237
6.475
6.484
6.487
6.725
6.734
6.737
6.975
6.984
6.987
7.225
7.234
7.237
7.475
7.484
7.487
7.725
7.734
7.737
7.975
7.984
7.987
8.225
8.234
8.237
8.475
8.484
8.487
8.725
8.734
8.737
8.975
8.984
8.987
9.225
9.234
9.237
9.475
9.484
9.487
9.725
9.734
9.737
9.975
9.984