AS568 Polyurethane 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.

Polyurethane is also known as urethane, cast urethan and millable urethane. Exceptional tensile strength. Abrasion and low temperature resistance. Typical applications include hydraulic seals, gaskets, diaphragms, hoses, and wheels for skate boards.

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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Inside Diameter (in)

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

-901 Polyurethane-75		N/A AS568 Standard O-Rings	N/A Polyurethane	N/A 0.056 in	N/A 75	N/A 0.185 in	N/A 0.003 in	N/A 0.005 in	N/A -901	N/A	N/A Imperial	N/A 3/32	N/A	N/A O-rings are used in the military defense and agriculture industries.
-902 Polyurethane-75		N/A AS568 Standard O-Rings	N/A Polyurethane	N/A 0.064 in	N/A 75	N/A 0.239 in	N/A 0.003 in	N/A 0.005 in	N/A -902	N/A	N/A Imperial	N/A 1/8	N/A	N/A O-rings are used in the military defense and agriculture industries.
-903 Polyurethane-75		N/A AS568 Standard O-Rings	N/A Polyurethane	N/A 0.064 in	N/A 75	N/A 0.301 in	N/A 0.003 in	N/A 0.005 in	N/A -903	N/A	N/A Imperial	N/A 3/16	N/A	N/A O-rings are used in the military defense and agriculture industries.v
-904 Polyurethane-75		N/A AS568 Standard O-Rings	N/A Polyurethane	N/A 0.072 in	N/A 75	N/A 0.351 in	N/A 0.003 in	N/A 0.005 in	N/A -904	N/A	N/A Imperial	N/A 1/4	N/A	N/A O-rings are used in the military defense and agriculture industries.
-905 Polyurethane-75		N/A AS568 Standard O-Rings	N/A Polyurethane	N/A 0.072 in	N/A 75	N/A 0.414 in	N/A 0.003 in	N/A 0.005 in	N/A -905	N/A	N/A Imperial	N/A 5/16	N/A	N/A O-rings are used in the military defense and agriculture industries.
-906 Polyurethane-75		N/A AS568 Standard O-Rings	N/A Polyurethane	N/A 0.078 in	N/A 75	N/A 0.468 in	N/A 0.003 in	N/A 0.005 in	N/A -906	N/A	N/A Imperial	N/A 3/8	N/A	N/A O-rings are used in the military defense and agriculture industries.
-907 Polyurethane-75		N/A AS568 Standard O-Rings	N/A Polyurethane	N/A 0.082 in	N/A 75	N/A 0.530 in	N/A 0.003 in	N/A 0.005 in	N/A -907	N/A	N/A Imperial	N/A 7/16	N/A	N/A O-rings are used in the military defense and agriculture industries.
-901 Polyurethane-90		N/A AS568 Standard O-Rings	N/A Polyurethane	N/A 0.056 in	N/A 90	N/A 0.185 in	N/A 0.003 in	N/A 0.005 in	N/A -901	N/A	N/A Imperial	N/A 3/32	N/A	N/A O-rings are used in the military defense and agriculture industries.
-902 Polyurethane-90		N/A AS568 Standard O-Rings	N/A Polyurethane	N/A 0.064 in	N/A 90	N/A 0.239 in	N/A 0.003 in	N/A 0.005 in	N/A -902	N/A	N/A Imperial	N/A 1/8	N/A	N/A O-rings are used in the military defense and agriculture industries.
-903 Polyurethane-90		N/A AS568 Standard O-Rings	N/A Polyurethane	N/A 0.064 in	N/A 90	N/A 0.301 in	N/A 0.003 in	N/A 0.005 in	N/A -903	N/A	N/A Imperial	N/A 3/16	N/A	N/A O-rings are used in the military defense and agriculture industries.
-904 Polyurethane-90		N/A AS568 Standard O-Rings	N/A Polyurethane	N/A 0.072 in	N/A 90	N/A 0.351 in	N/A 0.003 in	N/A 0.005 in	N/A -904	N/A	N/A Imperial	N/A 1/4	N/A	N/A O-rings are used in the military defense and agriculture industries.
-905 Polyurethane-90		N/A AS568 Standard O-Rings	N/A Polyurethane	N/A 0.072 in	N/A 90	N/A 0.414 in	N/A 0.003 in	N/A 0.005 in	N/A -905	N/A	N/A Imperial	N/A 5/16	N/A	N/A O-rings are used in the military defense and agriculture industries.
-906 Polyurethane-90		N/A AS568 Standard O-Rings	N/A Polyurethane	N/A 0.078 in	N/A 90	N/A 0.468 in	N/A 0.003 in	N/A 0.005 in	N/A -906	N/A	N/A Imperial	N/A 3/8	N/A	N/A O-rings are used in the military defense and agriculture industries.
-907 Polyurethane-90		N/A AS568 Standard O-Rings	N/A Polyurethane	N/A 0.082 in	N/A 90	N/A 0.530 in	N/A 0.003 in	N/A 0.005 in	N/A -907	N/A	N/A Imperial	N/A 7/16	N/A	N/A O-rings are used in the military defense and agriculture industries.
-015 U-70	N/A 190899	N/A	N/A	N/A 0.070 in1.78 mm	N/A 70	N/A 14.00 mm0.551 in	N/A 0.003 in0.08 mm	N/A 0.007 in0.17 mm	N/A -015	N/A	N/A	N/A	N/A	N/A O-rings are used in the military defense and agriculture industries.
-015 U-90	N/A 190900	N/A	N/A	N/A 0.070 in1.78 mm	N/A 90	N/A 14.00 mm0.551 in	N/A 0.003 in0.08 mm	N/A 0.007 in0.17 mm	N/A -015	N/A	N/A	N/A	N/A	N/A O-rings are used in the military defense and agriculture industries.
-207 U-70	N/A 191137	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	N/A O-rings are used in the military defense and agriculture industries.
-207 U-90	N/A 191138	N/A	N/A	N/A 0.139 in3.53 mm	N/A 90	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	N/A O-rings are used in the military defense and agriculture industries.
-311 U-70	N/A 191297	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	N/A O-rings are used in the military defense and agriculture industries.
-311 U-90	N/A 191298	N/A	N/A	N/A 0.210 in5.33 mm	N/A 90	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	N/A O-rings are used in the military defense and agriculture industries.
-312 U-70	N/A 191299	N/A	N/A	N/A 0.210 in5.33 mm	N/A 70	N/A 15.24 mm0.600 in	N/A 0.005 in0.12 mm	N/A 0.009 in0.22 mm	N/A -312	N/A	N/A	N/A	N/A	N/A O-rings are used in the military defense and agriculture industries.v
-312 U-90	N/A 191300	N/A	N/A	N/A 0.210 in5.33 mm	N/A 90	N/A 15.24 mm0.600 in	N/A 0.005 in0.12 mm	N/A 0.009 in0.22 mm	N/A -312	N/A	N/A	N/A	N/A	N/A O-rings are used in the military defense and agriculture industries.
-313 U-70	N/A 191301	N/A	N/A	N/A 0.210 in5.33 mm	N/A 70	N/A 16.81 mm0.662 in	N/A 0.005 in0.12 mm	N/A 0.009 in0.22 mm	N/A -313	N/A	N/A	N/A	N/A	N/A O-rings are used in the military defense and agriculture industries.
-313 U-90	N/A 191302	N/A	N/A	N/A 0.210 in5.33 mm	N/A 90	N/A 16.81 mm0.662 in	N/A 0.005 in0.12 mm	N/A 0.009 in0.22 mm	N/A -313	N/A	N/A	N/A	N/A	N/A O-rings are used in the military defense and agriculture industries.
-114 U-70	N/A 190995	N/A	N/A	N/A 0.103 in2.62 mm	N/A 70	N/A 15.54 mm0.612 in	N/A 0.003 in0.08 mm	N/A 0.009 in0.22 mm	N/A -114	N/A	N/A	N/A	N/A	N/A O-rings are used in the military defense and agriculture industries.

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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