AS568 Silicone O-Rings

OneMonroe Silicone O-Rings offer exceptional sealing solutions for a wide range of applications, ensuring reliability and durability under various operating conditions. Known for their superior elasticity and resistance to extreme temperatures, these silicone O-rings provide a strong, consistent seal in environments that demand high performance. Manufactured in compliance with AS568 standards, they are engineered to deliver precision and quality, making them ideal for use in industries such as automotive, aerospace, food and beverage, and medical. Whether you’re working with high heat or low temperatures, OneMonroe’s silicone O-rings maintain their flexibility and sealing strength, ensuring optimal performance over time.

Our silicone O-rings are designed for versatility and longevity. Thanks to their high resistance to compression set and resilience against UV, ozone, and various weather conditions, these O-rings are perfectly suited for both indoor and outdoor applications. This durability is further complemented by silicone's natural resistance to a wide range of chemicals, including water, acids, and bases, making them suitable for applications where exposure to harsh substances is a concern. With a range of sizes available, OneMonroe’s AS568 silicone O-rings provide seamless integration with various equipment, delivering a dependable sealing solution across industries.

OneMonroe is committed to delivering quality products that meet and exceed industry standards. Our silicone O-rings are rigorously tested to ensure consistency and reliability, providing peace of mind for applications that require a dependable seal. Whether for manufacturing, repairs, or new installations, OneMonroe’s silicone O-rings offer an ideal balance of flexibility, resilience, and chemical resistance. Trust in OneMonroe for a sealing solution that combines durability, quality, and exceptional performance across every application.

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	Cross Section Width	Durometer	Inside Diameter	Cross Section Tolerance +/-	Inside Diameter Tolerance +/-	Size Reference - AS568	Alternate P/N

M-026S70	N/A 192766	N/A 0.070 in1.78 mm	N/A 70	N/A 31.47 mm1.239 in	N/A 0.003 in0.08 mm	N/A 0.011 in0.28 mm	N/A -026	N/A 026S70
M-027S70	N/A 192767	N/A 0.070 in1.78 mm	N/A 70	N/A 33.05 mm1.301 in	N/A 0.003 in0.08 mm	N/A 0.011 in0.28 mm	N/A -027	N/A 027S70
M-028S70	N/A 192768	N/A 0.070 in1.78 mm	N/A 70	N/A 34.65 mm1.364 in	N/A 0.003 in0.08 mm	N/A 0.013 in0.33 mm	N/A -028	N/A 028S70
M-029S70	N/A 192769	N/A 0.070 in1.78 mm	N/A 70	N/A 37.82 mm1.489 in	N/A 0.003 in0.08 mm	N/A 0.013 in0.33 mm	N/A -029	N/A 029S70
M-030S70	N/A 192770	N/A 0.070 in1.78 mm	N/A 70	N/A 41.00 mm1.614 in	N/A 0.003 in0.08 mm	N/A 0.013 in0.33 mm	N/A -030	N/A 030S70
M-031S70	N/A 192771	N/A 0.070 in1.78 mm	N/A 70	N/A 44.17 mm1.739 in	N/A 0.003 in0.08 mm	N/A 0.015 in0.36 mm	N/A -031	N/A 031S70
M-032S70	N/A 192772	N/A 0.070 in1.78 mm	N/A 70	N/A 47.35 mm1.864 in	N/A 0.003 in0.08 mm	N/A 0.015 in0.38 mm	N/A -032	N/A 032S70
M-033S70	N/A 192773	N/A 0.070 in1.78 mm	N/A 70	N/A 50.52 mm1.989 in	N/A 0.003 in0.08 mm	N/A 0.018 in0.46 mm	N/A -033	N/A 033S70
M-034S70	N/A 192774	N/A 0.070 in1.78 mm	N/A 70	N/A 53.70 mm2.114 in	N/A 0.003 in0.08 mm	N/A 0.018 in0.46 mm	N/A -034	N/A 034S70
M-035S70	N/A 192775	N/A 0.070 in1.78 mm	N/A 70	N/A 56.87 mm2.239 in	N/A 0.003 in0.08 mm	N/A 0.018 in0.46 mm	N/A -035	N/A 035S70
M-036S70	N/A 192776	N/A 0.070 in1.78 mm	N/A 70	N/A 60.05 mm2.364 in	N/A 0.003 in0.08 mm	N/A 0.018 in0.46 mm	N/A -036	N/A 036S70
M-037S70	N/A 192777	N/A 0.070 in1.78 mm	N/A 70	N/A 63.22 mm2.489 in	N/A 0.003 in0.08 mm	N/A 0.018 in0.46 mm	N/A -037	N/A 037S70
M-038S70	N/A 192778	N/A 0.070 in1.78 mm	N/A 70	N/A 66.40 mm2.614 in	N/A 0.003 in0.08 mm	N/A 0.020 in0.50 mm	N/A -038	N/A 038S70
M-039S70	N/A 192779	N/A 0.070 in1.78 mm	N/A 70	N/A 69.57 mm2.739 in	N/A 0.003 in0.08 mm	N/A 0.020 in0.50 mm	N/A -039	N/A 039S70
M-040S70	N/A 192780	N/A 0.070 in1.78 mm	N/A 70	N/A 72.75 mm2.864 in	N/A 0.003 in0.08 mm	N/A 0.020 in0.50 mm	N/A -040	N/A 040S70
M-041S70	N/A 192781	N/A 0.070 in1.78 mm	N/A 70	N/A 75.92 mm2.989 in	N/A 0.003 in0.08 mm	N/A 0.024 in0.61 mm	N/A -041	N/A 041S70
M-042S70	N/A 192782	N/A 0.070 in1.78 mm	N/A 70	N/A 82.27 mm3.239 in	N/A 0.003 in0.08 mm	N/A 0.024 in0.61 mm	N/A -042	N/A 042S70
M-043S70	N/A 192783	N/A 0.070 in1.78 mm	N/A 70	N/A 88.62 mm3.489 in	N/A 0.003 in0.08 mm	N/A 0.024 in0.61 mm	N/A -043	N/A 043S70
M-044S70	N/A 192784	N/A 0.070 in1.78 mm	N/A 70	N/A 94.97 mm3.739 in	N/A 0.003 in0.08 mm	N/A 0.027 in0.69 mm	N/A -044	N/A 044S70
M-045S70	N/A 192785	N/A 0.070 in1.78 mm	N/A 70	N/A 101.32 mm3.989 in	N/A 0.003 in0.08 mm	N/A 0.027 in0.69 mm	N/A -045	N/A 045S70
M-046S70	N/A 192786	N/A 0.070 in1.78 mm	N/A 70	N/A 107.67 mm4.239 in	N/A 0.003 in0.08 mm	N/A 0.030 in0.76 mm	N/A -046	N/A 046S70
M-047S70	N/A 192787	N/A 0.070 in1.78 mm	N/A 70	N/A 114.02 mm4.489 in	N/A 0.003 in0.08 mm	N/A 0.030 in0.76 mm	N/A -047	N/A 047S70
M-048S70	N/A 192788	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 048S70
M-049S70	N/A 192789	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 049S70
M-050S70	N/A 192790	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 050S70

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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