BS Aflas O-Rings | OneMonroe

OneMonroe Aflas® O-Rings offer exceptional durability and resistance, engineered for high-performance applications where standard elastomers fall short. Made from Aflas® material, these O-rings are specifically designed to withstand challenging environments with extreme temperatures, chemicals, and aggressive fluids. Their outstanding resilience against oil, steam, acids, and alkalis makes them ideal for industries such as chemical processing, oil and gas, and automotive manufacturing, where exposure to such conditions is common. OneMonroe Aflas® O-Rings provide a reliable sealing solution that maintains its integrity and performance even in the most demanding applications.

The versatility of Aflas® material allows OneMonroe O-Rings to perform exceptionally in both high- and low-temperature ranges, ranging from -10°C to 200°C (14°F to 392°F). This unique thermal resistance ensures that these O-rings can be used effectively across a wide spectrum of applications, minimizing the need for frequent replacements and maintenance. In addition to temperature resilience, Aflas® O-Rings resist a variety of chemicals and fluids, including amines, bases, acids, and hydrocarbons. Their durability and adaptability make them a cost-effective choice for industries that demand long-lasting, reliable sealing solutions under extreme conditions.

OneMonroe’s commitment to quality ensures that each Aflas® O-Ring is manufactured with precision to meet rigorous industry standards. Available in a range of sizes and thicknesses, these O-rings offer flexibility in design while maintaining consistent, dependable sealing performance. With OneMonroe Aflas® O-Rings, you can be assured of high-quality components that deliver long-term reliability, reduce downtime, and support seamless operations across industries. Trust in OneMonroe to provide O-rings that uphold the highest standards in durability, chemical resistance, and thermal stability for all your specialized sealing needs.

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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Item #	IntegrationID	Type	Material	Cross Section Width	Durometer	Inside Diameter	CSW Tolerance	BS Number	Add To Cart/Request Quote

BS806 AFLAS-75	N/A 186558	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 75	N/A 0.44 in11.10 mm	N/A 0.003 in0.08 mm	N/A -806	Request Quote
BS804 AFLAS-75	N/A 186559	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 75	N/A 0.31 in7.94 mm	N/A 0.003 in0.08 mm	N/A -804	Request Quote
BS803 AFLAS-75	N/A 186560	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 75	N/A 0.25 in6.35 mm	N/A 0.003 in0.08 mm	N/A -803	Request Quote
BS802 AFLAS-75	N/A 186561	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 75	N/A 0.19 in4.75 mm	N/A 0.003 in0.08 mm	N/A -802	Request Quote
BS801 AFLAS-75	N/A 186562	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 75	N/A 0.13 in3.18 mm	N/A 0.003 in0.08 mm	N/A -801	Request Quote
BS650 AFLAS-75	N/A 186563	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 75	N/A 13.23 in335.92 mm	N/A 0.006 in0.15 mm	N/A -650	Request Quote
BS649 AFLAS-75	N/A 186564	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 75	N/A 12.73 in323.22 mm	N/A 0.006 in0.15 mm	N/A -649	Request Quote
BS648 AFLAS-75	N/A 186565	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 75	N/A 12.23 in310.52 mm	N/A 0.006 in0.15 mm	N/A -648	Request Quote
BS647 AFLAS-75	N/A 186566	N/A BS Standard O-Ring	N/A Aflas	N/A 0.210 in5.33 mm	N/A 75	N/A 6.85 in173.99 mm	N/A 0.005 in0.13 mm	N/A -647	Request Quote
BS646 AFLAS-75	N/A 186567	N/A BS Standard O-Ring	N/A Aflas	N/A 0.210 in5.33 mm	N/A 75	N/A 6.60 in167.64 mm	N/A 0.005 in0.13 mm	N/A -646	Request Quote
BS645 AFLAS-75	N/A 186568	N/A BS Standard O-Ring	N/A Aflas	N/A 0.210 in5.33 mm	N/A 75	N/A 6.35 in161.29 mm	N/A 0.005 in0.13 mm	N/A -645	Request Quote
BS644 AFLAS-75	N/A 186569	N/A BS Standard O-Ring	N/A Aflas	N/A 0.210 in5.33 mm	N/A 75	N/A 6.10 in154.94 mm	N/A 0.005 in0.13 mm	N/A -644	Request Quote
BS643 AFLAS-75	N/A 186570	N/A BS Standard O-Ring	N/A Aflas	N/A 0.103 in2.62 mm	N/A 75	N/A 3.30 in83.79 mm	N/A 0.003 in0.08 mm	N/A -643	Request Quote
BS642 AFLAS-75	N/A 186571	N/A BS Standard O-Ring	N/A Aflas	N/A 0.103 in2.62 mm	N/A 75	N/A 3.17 in80.62 mm	N/A 0.003 in0.08 mm	N/A -642	Request Quote
BS641 AFLAS-75	N/A 186572	N/A BS Standard O-Ring	N/A Aflas	N/A 0.103 in2.62 mm	N/A 75	N/A 3.05 in77.44 mm	N/A 0.003 in0.08 mm	N/A -641	Request Quote
BS640 AFLAS-75	N/A 186573	N/A BS Standard O-Ring	N/A Aflas	N/A 0.103 in2.62 mm	N/A 75	N/A 2.92 in74.27 mm	N/A 0.003 in0.08 mm	N/A -640	Request Quote
BS628 AFLAS-75	N/A 186574	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 75	N/A 6.56 in166.70 mm	N/A 0.006 in0.15 mm	N/A -628	Request Quote
BS627 AFLAS-75	N/A 186575	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 75	N/A 6.28 in159.54 mm	N/A 0.006 in0.15 mm	N/A -627	Request Quote
BS626 AFLAS-75	N/A 186576	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 75	N/A 5.30 in134.54 mm	N/A 0.006 in0.15 mm	N/A -626	Request Quote
BS625 AFLAS-75	N/A 186577	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 75	N/A 4.91 in124.61 mm	N/A 0.006 in0.15 mm	N/A -625	Request Quote
BS624 AFLAS-75	N/A 186578	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 75	N/A 4.52 in114.71 mm	N/A 0.006 in0.15 mm	N/A -624	Request Quote
BS623 AFLAS-75	N/A 186579	N/A BS Standard O-Ring	N/A Aflas	N/A 0.210 in5.33 mm	N/A 75	N/A 4.31 in109.54 mm	N/A 0.005 in0.13 mm	N/A -623	Request Quote
BS622 AFLAS-75	N/A 186580	N/A BS Standard O-Ring	N/A Aflas	N/A 0.210 in5.33 mm	N/A 75	N/A 3.94 in100.00 mm	N/A 0.005 in0.13 mm	N/A -622	Request Quote
BS621 AFLAS-75	N/A 186581	N/A BS Standard O-Ring	N/A Aflas	N/A 0.210 in5.33 mm	N/A 75	N/A 3.53 in89.69 mm	N/A 0.005 in0.13 mm	N/A -621	Request Quote
BS620 AFLAS-75	N/A 186582	N/A BS Standard O-Ring	N/A Aflas	N/A 0.210 in5.33 mm	N/A 75	N/A 3.14 in79.78 mm	N/A 0.005 in0.13 mm	N/A -620	Request Quote

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No Preference
0.04
0.05
0.06
0.07
0.08
0.10
0.11
0.13
0.14
0.17
0.18
0.19
0.21
0.23
0.24
0.25
0.27
0.30
0.31
0.34
0.36
0.39
0.41
0.42
0.43
0.44
0.47
0.48
0.49
0.50
0.52
0.54
0.55
0.59
0.60
0.61
0.63
0.66
0.67
0.68
0.69
0.70
0.73
0.74
0.79
0.80
0.81
0.85
0.86
0.88
0.91
0.92
0.93
0.94
0.98
0.99
1.02
1.04
1.05
1.10
1.11
1.16
1.17
1.18
1.23
1.24
1.29
1.30
1.35
1.36
1.42
1.43
1.48
1.49
1.55
1.56
1.60
1.61
1.63
1.67
1.69
1.73
1.74
1.75
1.80
1.81
1.85
1.86
1.88
1.93
1.94
1.98
1.99
10.23
10.48
10.73
10.98
11.23
11.48
11.73
11.98
12.23
12.48
12.73
12.98
13.23
13.48
13.98
14.48
14.98
15.48
15.96
16.46
16.96
17.46
17.96
18.46
18.96
19.46
19.96
2.00
2.05
2.06
2.10
2.11
2.13
2.18
2.19
2.23
2.24
2.25
2.30
2.31
2.35
2.36
2.43
2.44
2.48
2.49
2.50
2.55
2.56
2.60
2.61
2.63
2.68
2.69
2.73
2.74
2.75
2.80
2.81
2.85
2.86
2.88
2.92
2.94
2.95
2.97
2.98
2.99
20.96
21.96
22.94
24.94
25.94
29.85
3.05
3.10
3.11
3.14
3.17
3.23
3.24
3.30
3.35
3.36
3.48
3.49
3.53
3.60
3.61
3.73
3.74
3.85
3.86
3.94
3.98
3.99
4.10
4.11
4.23
4.24
4.31
4.35
4.36
4.48
4.49
4.52
4.60
4.61
4.63
4.73
4.74
4.75
4.85
4.86
4.88
4.91
4.98
4.99
5.00
5.09
5.10
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5.13
5.23
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5.34
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5.36
5.38
5.47
5.48
5.49
5.50
5.59
5.60
5.61
5.63
5.72
5.73
5.74
5.75
5.84
5.85
5.86
5.88
5.97
5.98
5.99
6.09
6.10
6.13
6.22
6.23
6.24
6.28
6.34
6.35
6.38
6.47
6.48
6.49
6.56
6.60
6.63
6.69
6.72
6.73
6.74
6.84
6.85
6.88
6.98
6.99
7.13
7.23
7.24
7.38
7.48
7.49
7.63
7.73
7.74
7.88
7.98
7.99
8.23
8.24
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No Preference
1.07
1.24
1.42
1.78
10.46
10.69
10.77
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100.00
100.97
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101.27
101.32
104.14
104.37
104.39
107.32
107.54
107.62
107.67
109.54
11.10
11.91
110.49
110.72
110.74
113.67
113.89
113.97
114.02
114.71
116.84
117.07
117.09
117.48
12.07
12.29
12.37
12.42
12.70
120.02
120.24
120.32
120.37
120.65
123.19
123.42
123.44
123.83
124.61
126.37
126.59
126.67
126.72
127.00
129.41
129.54
129.77
13.11
13.64
13.94
130.18
132.72
132.94
133.02
133.07
133.35
134.54
135.76
135.89
136.12
136.53
138.94
139.07
139.29
139.37
139.70
14.00
142.11
142.24
142.47
142.88
145.29
145.42
145.64
145.72
146.05
148.46
148.59
148.82
149.23
15.09
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15.88
151.64
151.77
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152.07
154.81
154.94
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158.12
158.34
158.42
159.54
16.81
161.16
161.29
161.93
164.34
164.47
164.69
164.77
166.70
167.64
168.28
17.07
17.12
17.17
17.45
17.86
170.05
170.69
170.82
171.04
171.12
173.86
173.99
174.63
177.17
177.39
177.47
18.42
18.64
18.72
18.77
180.98
183.52
183.74
183.82
187.33
189.87
19.99
190.09
190.17
193.68
196.22
196.44
196.52
2.06
2.54
2.57
2.84
2.90
20.22
20.29
20.35
20.62
200.03
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
22.23
221.62
221.84
221.92
227.97
228.19
228.27
23.16
23.39
23.47
23.52
23.80
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
25.81
253.37
253.59
259.72
26.34
26.57
26.64
26.70
266.07
266.29
27.94
272.42
278.77
278.99
28.17
28.24
28.30
285.12
29.51
29.74
29.82
29.87
291.47
291.69
297.82
3.18
3.63
3.68
304.17
304.39
31.12
31.34
31.42
31.47
310.52
316.87
32.69
32.92
32.99
323.22
329.57
329.79
33.05
335.92
34.29
34.52
34.59
34.65
342.27
354.97
355.19
36.09
36.17
36.27
367.67
37.47
37.69
37.77
37.82
380.37
380.59
39.34
39.45
39.70
393.07
4.34
4.45
4.47
4.75
40.64
40.87
40.94
405.26
41.00
41.28
417.96
42.52
42.85
43.82
430.66
44.04
44.12
44.17
44.45
443.36
45.69
456.06
46.04
46.99
468.76
47.22
47.29
47.35
47.63
48.90
481.46
49.20
494.16
5.23
5.28
5.94
50.17
50.39
50.47
50.52
50.80
506.86
52.07
52.39
53.34
53.57
53.64
53.70
53.98
532.26
55.25
55.55
557.66
56.52
56.74
56.82
56.87
57.15
58.42
58.74
582.68
59.69
59.92
59.99
6.02
6.07
6.35
6.76
61.60
61.90
62.87
63.09
63.17
63.22
63.50
633.48
64.77
65.1
658.88
66.04
66.27
66.34
66.40
66.68
67.95
68.25
69.22
69.44
69.52
69.57
69.85
7.52
7.59
7.65
7.94
71.12
71.44
72.39
72.62
72.69
72.75
73.03
74.27
74.60
74.61
75.05
75.33
75.57
75.79
75.87
75.92
758.08
77.44
78.74
78.97
78.99
79.78
8.74
80.62
81.92
82.14
82.22
82.27
83.79
85.09
85.32
85.34
88.27
88.49
88.57
88.62
89.69
9.12
9.19
9.25
9.93
91.44
91.67
91.69
94.62
94.84
94.92
94.97
97.79
98.02
98.04