BS Aflas O-Rings | OneMonroe

British Standard O-Rings are very similar to Standard O-Rings in the fact that they are both standardized imperically. The British Standard however, incorporates some extended sizes in the 1/4" nominal cross section group for an even broader application range. British Standard O-Rings serve a variety of industries including aerospace, paint, food, and chemical transport.

This elastomer is a copolymer of Tetrafluoroethylene (TFE) and propylene. Its chemical resistance is excellent across a wide range of aggressive media.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 (mm)

Item #	IntegrationID	Type	Material	Cross Section Width	Durometer	Inside Diameter	CSW Tolerance	BS Number	Call for a Quote	O-Ring Industries

BS903 AFLAS-75	N/A 186508	N/A BS Standard O-Ring	N/A Aflas	N/A 0.064 in1.63 mm	N/A 75	N/A 0.30 in7.65 mm	N/A 0.003 in0.08 mm	N/A -903	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS902 AFLAS-75	N/A 186509	N/A BS Standard O-Ring	N/A Aflas	N/A 0.064 in1.63 mm	N/A 75	N/A 0.24 in6.07 mm	N/A 0.003 in0.08 mm	N/A -902	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS814 AFLAS-75	N/A 186552	N/A BS Standard O-Ring	N/A Aflas	N/A 0.103 in2.62 mm	N/A 75	N/A 0.94 in23.80 mm	N/A 0.003 in0.08 mm	N/A -814	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS813 AFLAS-75	N/A 186553	N/A BS Standard O-Ring	N/A Aflas	N/A 0.103 in2.62 mm	N/A 75	N/A 0.88 in22.23 mm	N/A 0.003 in0.08 mm	N/A -813	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS812 AFLAS-75	N/A 186554	N/A BS Standard O-Ring	N/A Aflas	N/A 0.103 in2.62 mm	N/A 75	N/A 0.81 in20.62 mm	N/A 0.003 in0.08 mm	N/A -812	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS810 AFLAS-75	N/A 186555	N/A BS Standard O-Ring	N/A Aflas	N/A 0.103 in2.62 mm	N/A 75	N/A 0.69 in17.45 mm	N/A 0.003 in0.08 mm	N/A -810	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS809 AFLAS-75	N/A 186556	N/A BS Standard O-Ring	N/A Aflas	N/A 0.103 in2.62 mm	N/A 75	N/A 0.63 in15.88 mm	N/A 0.003 in0.08 mm	N/A -809	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS807 AFLAS-75	N/A 186557	N/A BS Standard O-Ring	N/A Aflas	N/A 0.103 in2.62 mm	N/A 75	N/A 0.50 in12.70 mm	N/A 0.003 in0.08 mm	N/A -807	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS617 AFLAS-75	N/A 186585	N/A BS Standard O-Ring	N/A Aflas	N/A 0.103 in2.62 mm	N/A 75	N/A 0.70 in17.86 mm	N/A 0.003 in0.08 mm	N/A -617	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS616 AFLAS-75	N/A 186586	N/A BS Standard O-Ring	N/A Aflas	N/A 0.103 in2.62 mm	N/A 75	N/A 0.59 in15.09 mm	N/A 0.003 in0.08 mm	N/A -616	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS615 AFLAS-75	N/A 186587	N/A BS Standard O-Ring	N/A Aflas	N/A 0.103 in2.62 mm	N/A 75	N/A 0.52 in13.11 mm	N/A 0.003 in0.08 mm	N/A -615	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS614 AFLAS-75	N/A 186588	N/A BS Standard O-Ring	N/A Aflas	N/A 0.103 in2.62 mm	N/A 75	N/A 0.47 in11.91 mm	N/A 0.003 in0.08 mm	N/A -614	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS613 AFLAS-75	N/A 186589	N/A BS Standard O-Ring	N/A Aflas	N/A 0.103 in2.62 mm	N/A 75	N/A 0.39 in9.93 mm	N/A 0.003 in0.08 mm	N/A -613	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS611 AFLAS-75	N/A 186590	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 75	N/A 0.34 in8.74 mm	N/A 0.003 in0.08 mm	N/A -611	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS610 AFLAS-75	N/A 186591	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 75	N/A 0.27 in6.76 mm	N/A 0.003 in0.08 mm	N/A -610	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
BS757 AFLAS-75	N/A 186592	N/A BS Standard O-Ring	N/A Aflas	N/A 0.040 in1.02 mm	N/A 75	N/A 0.10 in2.54 mm	N/A 0.003 in0.08 mm	N/A -757	N/A	N/A O-rings are used in the military, automotive, aerospace and agriculture industries.

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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
5.11
5.13
5.23
5.24
5.25
5.30
5.34
5.35
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
8.48
8.49
8.73
8.74
8.98
8.99
9.23
9.24
9.48
9.49
9.73
9.74
9.98

No Preference
1.07
1.24
1.42
1.78
10.46
10.69
10.77
10.82
100.00
100.97
101.19
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
15.24
15.47
15.54
15.6
15.88
151.64
151.77
151.99
152.07
154.81
154.94
155.58
157.99
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