Metric Aflas O-Rings

Metric O-Rings are employed in specialized applications and, like the name suggests, are standardized by metric dimensions. With a wide variety of sizes available, Metric O-Rings fill in the gaps left by the standardized AS568 o-ring chart. Metric O-Ring sizing is determined by the o-ring's inside diameter and cross section width.

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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Cross Section Width (mm)

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Inside Diameter (mm)

Item #	IntegrationID	Type	Material	Cross Reference	Cross Section Width	Durometer	Inside Diameter	Call for a Quote

254 X 3.5 AFLAS-75	N/A 144983	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 3.50 mm	N/A 75	N/A 254.00 mm	N/A O-rings are used in the military, automotive,	254 X 3.5 AFLAS-83	N/A 144984	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 3.50 mm	N/A 83	N/A 254.00 mm	N/A O-rings are used in the military, automotive,	254 X 4 AFLAS-75	N/A 144985	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 4.00 mm	N/A 75	N/A 254.00 mm	N/A O-rings are used in the military, automotive,	254 X 4 AFLAS-83	N/A 144986	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 4.00 mm	N/A 83	N/A 254.00 mm	N/A O-rings are used in the military, automotive,	254 X 5 AFLAS-75	N/A 144987	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 5.00 mm	N/A 75	N/A 254.00 mm	N/A O-rings are used in the military, automotive,	254 X 5 AFLAS-83	N/A 144988	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 5.00 mm	N/A 83	N/A 254.00 mm	N/A O-rings are used in the military, automotive,	254.5 X 8.4 AFLAS-75	N/A 144989	N/A Metric Standard O-Ring	N/A Aflas	N/A P255	N/A 8.40 mm	N/A 75	N/A 254.50 mm	N/A O-rings are used in the military, automotive,	254.5 X 8.4 AFLAS-83	N/A 144990	N/A Metric Standard O-Ring	N/A Aflas	N/A P255	N/A 8.40 mm	N/A 83	N/A 254.50 mm	N/A O-rings are used in the military, automotive,	255 X 3 AFLAS-75	N/A 144991	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 3.00 mm	N/A 75	N/A 255.00 mm	N/A O-rings are used in the military, automotive,	255 X 3 AFLAS-83	N/A 144992	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 3.00 mm	N/A 83	N/A 255.00 mm	N/A O-rings are used in the military, automotive,	255 X 3.5 AFLAS-75	N/A 144993	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 3.50 mm	N/A 75	N/A 255.00 mm	N/A O-rings are used in the military, automotive,	255 X 3.5 AFLAS-83	N/A 144994	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 3.50 mm	N/A 83	N/A 255.00 mm	N/A O-rings are used in the military, automotive,	255 X 4 AFLAS-75	N/A 144995	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 4.00 mm	N/A 75	N/A 255.00 mm	N/A O-rings are used in the military, automotive,	255 X 4 AFLAS-83	N/A 144996	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 4.00 mm	N/A 83	N/A 255.00 mm	N/A O-rings are used in the military, automotive,	255 X 5 AFLAS-75	N/A 144997	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 5.00 mm	N/A 75	N/A 255.00 mm	N/A O-rings are used in the military, automotive,	255 X 5 AFLAS-83	N/A 144998	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 5.00 mm	N/A 83	N/A 255.00 mm	N/A O-rings are used in the military, automotive,	256 X 3.5 AFLAS-75	N/A 144999	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 3.50 mm	N/A 75	N/A 256.00 mm	N/A O-rings are used in the military, automotive,	256 X 3.5 AFLAS-83	N/A 145000	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 3.50 mm	N/A 83	N/A 256.00 mm	N/A O-rings are used in the military, automotive,	256 X 4 AFLAS-75	N/A 145001	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 4.00 mm	N/A 75	N/A 256.00 mm	N/A O-rings are used in the military, automotive,	256 X 4 AFLAS-83	N/A 145002	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 4.00 mm	N/A 83	N/A 256.00 mm	N/A O-rings are used in the military, automotive,	256 X 5 AFLAS-75	N/A 145003	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 5.00 mm	N/A 75	N/A 256.00 mm	N/A O-rings are used in the military, automotive,	256 X 5 AFLAS-83	N/A 145004	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 5.00 mm	N/A 83	N/A 256.00 mm	N/A O-rings are used in the military, automotive,	257 X 3.5 AFLAS-75	N/A 145005	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 3.50 mm	N/A 75	N/A 257.00 mm	N/A O-rings are used in the military, automotive,	257 X 3.5 AFLAS-83	N/A 145006	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 3.50 mm	N/A 83	N/A 257.00 mm	N/A O-rings are used in the military, automotive,	257 X 4 AFLAS-75	N/A 145007	N/A Metric Standard O-Ring	N/A Aflas	N/A	N/A 4.00 mm	N/A 75	N/A 257.00 mm	N/A O-rings are used in the military, automotive, 3451 - 3475 of 8108 \| Results Per Page \| View \| Unit of Measure « 136 137 138 139 140 » Privacy Policy We use cookies to improve your experience. By your continued use of this site you accept such use. For more information, please see our privacy policy. Latest News Want to read the latest news from Monroe Engineering? Click Here Locations Headquarters 2990 Technology Dr Rochester Hills, MI 48309 See All of Our Locations Contact Us (877)740-1077 sales@askmonroe.com Custom MFG Privacy policy Certifications General Terms & Conditions Supplier Terms & Conditions AS9100D Quality Manual Supplier Quality Manual Prop 65 Contact Us © Copyright . All Rights Reserved..

No Preference
0.70
0.80
0.81
0.84
0.90
1.00
1.02
1.15
1.19
1.20
1.25
1.27
1.30
1.42
1.50
1.52
1.60
1.63
1.78
1.80
1.83
1.90
1.92
1.98
10.00
2.00
2.08
2.18
2.20
2.21
2.40
2.46
2.50
2.55
2.62
2.65
2.66
2.70
2.93
2.95
250.00
3.00
3.10
3.20
3.50
3.53
3.55
3.60
4.00
4.20
4.50
4.76
5.00
5.30
5.33
5.50
5.70
5.80
6.00
6.20
6.35
6.50
6.90
6.99
7.00
7.50
8.00
8.30
8.40
9.00

No Preference
1.07
1.15
1.24
1.25
1.42
1.50
1.60
1.78
1.80
1.85
10.00
10.10
10.30
10.46
10.50
10.52
10.60
10.69
10.70
10.80
10.82
100.00
100.50
100.97
101.00
101.19
101.32
101.60
101.62
102.00
103.00
103.50
104.00
104.10
104.14
104.20
104.30
104.37
104.40
104.50
104.60
1044.00
105.00
106.00
107.00
107.32
107.54
107.62
107.67
108.00
109.00
109.10
109.20
109.30
109.40
109.50
109.54
11.00
11.10
11.11
11.30
11.50
11.60
11.70
11.80
11.89
11.91
110.00
110.49
110.72
110.74
111.00
111.50
111.60
112.00
113.00
113.67
113.89
113.97
114.00
114.02
114.20
114.30
114.40
114.50
114.60
114.70
115.00
116.00
116.84
117.00
117.07
117.10
117.48
118.00
119.00
119.20
119.30
119.40
119.50
119.60
12.00
12.07
12.10
12.29
12.30
12.37
12.40
12.42
12.50
12.60
12.70
120.00
120.02
120.24
120.32
120.37
120.65
121.00
122.00
123.00
123.19
123.42
123.44
123.83
124.00
124.30
124.40
124.50
124.60
125.00
125.30
125.60
126.00
126.37
126.50
126.59
126.67
126.72
127.00
128.00
129.00
129.20
129.30
129.40
129.50
129.54
129.60
129.77
13.00
13.10
13.20
13.25
13.30
13.46
13.50
13.60
13.64
13.87
13.94
130.00
130.18
131.00
131.50
131.60
132.00
132.20
132.72
132.94
133.00
133.02
133.07
133.20
133.35
134.00
134.20
134.30
134.40
134.50
134.60
135.00
135.76
135.89
136.00
136.12
136.53
137.00
138.00
138.94
139.00
139.07
139.20
139.29
139.30
139.37
139.40
139.50
139.60
139.70
14.00
14.10
14.30
14.50
14.60
14.80
140.00
140.50
141.00
142.00
142.11
142.24
142.47
142.88
143.00
144.00
144.10
144.20
144.30
144.40
144.50
144.60
145.00
145.29
145.42
145.64
145.72
146.00
146.05
147.00
148.00
148.46
148.50
148.59
148.82
149.00
149.10
149.20
149.23
149.30
149.50
149.60
15.00
15.08
15.10
15.24
15.30
15.47
15.50
15.54
15.60
15.80
15.88
15.90
150.00
151.00
151.64
151.77
151.99
152.00
152.07
153.00
154.00
154.10
154.30
154.50
154.81
155.00
155.50
155.60
156.00
157.00
158.00
158.12
158.34
158.42
158.82
159.00
159.10
159.30
159.50
16.00
16.10
16.30
16.36
16.50
16.60
16.81
16.90
160.00
161.00
161.16
161.30
161.60
161.90
162.00
163.00
164.00
164.10
164.20
164.30
164.34
164.47
164.50
164.69
164.77
165.00
166.00
166.70
167.00
167.51
167.70
168.00
168.30
169.00
169.10
169.30
169.50
17.00
17.04
17.10
17.12
17.17
17.30
17.46
17.50
17.60
17.80
17.86
17.93
170.00
170.69
170.82
171.00
171.04
171.12
172.00
173.00
173.87
174.00
174.10
174.20
174.30
174.50
174.60
175.00
176.00
177.00
177.17
177.39
177.47
178.00
179.00
179.10
179.30
179.50
18.00
18.10
18.20
18.30
18.40
18.42
18.50
18.60
18.64
18.72
18.77
180.00
181.00
182.00
183.00
183.50
183.52
183.74
183.82
184.00
184.10
184.30
184.50
185.00
186.00
187.00
187.30
188.00
189.00
189.10
189.20
189.30
189.50
189.87
19.00
19.05
19.10
19.15
19.18
19.20
19.30
19.50
19.60
19.80
19.99
190.00
190.09
190.17
191.00
191.20
192.00
193.00
193.70
194.00
194.10
194.20
194.30
194.50
195.00
196.00
196.22
196.44
196.52
197.00
198.00
199.00
199.10
199.20
199.30
199.50
2.00
2.06
2.20
2.24
2.40
2.50
2.54
2.57
2.60
2.70
2.75
2.80
2.84
2.90
20.00
20.22
20.29
20.30
20.35
20.50
20.64
20.80
200.00
201.00
202.00
202.57
202.79
202.87
203.00
203.50
204.00
204.10
204.20
204.50
205.00
206.00
207.00
208.00
208.50
208.92
209.00
209.10
209.14
209.20
209.22
209.30
209.50
21.00
21.10
21.20
21.30
21.47
21.50
21.59
21.60
21.70
21.80
21.82
21.89
21.90
21.92
21.95
210.00
211.00
212.00
213.00
214.00
214.50
215.00
215.27
215.49
215.57
216.00
217.00
218.00
219.00
219.10
219.30
219.50
22.00
22.10
22.20
22.23
22.30
22.40
22.50
22.60
22.80
220.00
221.00
221.62
221.84
221.92
222.00
222.50
223.00
224.00
224.50
225.00
226.00
227.00
227.97
228.00
228.19
228.27
229.00
229.10
229.30
229.50
23.00
23.16
23.30
23.39
23.47
23.50
23.52
23.60
23.70
23.81
230.00
231.00
232.00
233.00
234.00
234.10
234.30
234.32
234.50
234.54
234.62
235.00
236.00
237.00
237.50
238.00
239.00
239.10
239.30
239.50
24.00
24.20
24.30
24.40
24.50
24.60
24.70
24.77
24.99
240.00
240.67
240.89
240.97
241.00
242.00
243.00
244.00
244.50
245.00
246.00
247.00
247.02
247.24
247.32
248.00
249.00
249.10
249.30
249.50
25.00
25.04
25.07
25.10
25.12
25.20
25.30
25.50
25.60
25.70
25.80
250.00
250.37
251.00
252.00
253.00
253.37
253.59
254.00
254.50
255.00
256.00
257.00
258.00
259.00
259.30
259.50
259.70
26.00
26.20
26.34
26.50
26.57
26.59
26.64
26.70
260.00
261.00
262.00
263.00
264.00
264.50
265.00
266.00
266.07
266.29
267.00
268.00
269.00
269.20
269.30
269.50
27.00
27.10
27.30
27.50
27.60
27.70
27.80
27.94
270.00
271.00
272.00
272.40
273.00
274.00
274.50
275.00
276.00
277.00
278.00
278.77
278.99
279.00
279.30
279.50
28.00
28.17
28.24
28.30
28.40
28.50
28.70
280.00
281.00
282.00
283.00
284.00
284.50
285.00
285.10
286.00
287.00
288.00
289.00
289.30
289.50
29.00
29.10
29.20
29.30
29.40
29.50
29.51
29.60
29.70
29.74
29.82
29.87
29.90
290.00
291.00
291.47
291.69
292.00
293.00
294.00
294.50
295.00
296.00
297.00
297.80
298.00
299.00
299.30
299.50
3.00
3.10
3.15
3.17
3.20
3.25
3.30
3.40
3.50
3.55
3.60
3.63
3.68
3.70
3.75
3.80
3.91
30.00
30.20
30.30
30.50
30.70
30.80
300.00
301.00
302.00
303.00
304.00
304.17
304.39
305.00
306.00
307.00
308.00
309.00
31.00
31.12
31.20
31.34
31.42
31.47
31.50
31.60
31.70
31.80
310.00
310.50
311.00
312.00
313.00
314.00
314.50
315.00
316.00
316.87
317.00
318.00
319.00
319.20
319.30
319.50
32.00
32.10
32.20
32.50
32.69
32.92
32.99
320.00
321.00
321.50
322.00
323.00
323.20
324.00
325.00
326.00
327.00
328.00
329.00
329.30
329.55
329.57
329.79
33.00
33.05
33.30
33.50
33.70
330.00
331.00
332.00
333.00
334.00
334.50
335.00
335.90
336.00
337.00
338.00
339.00
339.30
339.50
34.00
34.10
34.20
34.29
34.40
34.42
34.50
34.52
34.59
34.60
34.65
34.70
340.00
341.00
342.00
342.27
343.00
344.00
345.00
346.00
347.00
348.00
349.00
349.30
35.00
35.10
35.20
35.50
35.60
35.70
350.00
351.00
352.00
353.00
354.00
354.50
354.97
355.00
355.19
356.00
357.00
358.00
359.00
359.30
359.50
36.00
36.09
36.17
36.20
36.27
36.50
360.00
361.00
362.00
363.00
364.00
365.00
366.00
367.00
367.67
368.00
369.00
37.00
37.10
37.20
37.30
37.40
37.47
37.50
37.60
37.69
37.70
37.77
37.82
370.00
371.00
372.00
373.00
374.00
374.50
375.00
376.00
377.00
378.00
379.00
379.30
38.00
38.50
38.70
380.00
380.37
380.59
381.00
382.00
383.00
384.00
384.50
385.00
386.00
387.00
388.00
389.00
39.00
39.20
39.34
39.40
39.45
39.50
39.60
39.70
390.00
391.00
392.00
393.00
393.07
394.00
395.00
396.00
397.00
398.00
399.00
399.30
399.50
4.00
4.10
4.20
4.30
4.32
4.34
4.42
4.47
4.50
4.60
4.70
4.80
4.87
4.90
40.00
40.20
40.50
40.64
40.70
40.87
40.94
400.00
401.00
402.00
403.00
404.00
405.00
405.26
406.00
407.00
408.00
409.00
41.00
41.20
41.26
41.28
41.40
41.50
41.60
41.70
410.00
411.00
412.00
413.00
414.00
415.00
416.00
417.00
417.96
418.00
419.00
419.30
42.00
42.10
42.20
42.50
42.52
42.86
420.00
421.00
422.00
422.20
423.00
424.00
425.00
425.50
426.00
427.00
428.00
429.00
43.00
43.40
43.50
43.69
43.70
43.82
430.00
430.66
431.00
432.00
433.00
434.00
435.00
436.00
437.00
438.00
439.00
439.30
44.00
44.04
44.12
44.17
44.20
44.30
44.40
44.45
44.50
44.60
44.70
440.00
441.00
442.00
443.00
443.36
444.00
445.00
446.00
447.00
448.00
449.00
449.20
45.00
45.20
45.30
45.50
45.59
45.69
45.70
45.84
450.00
451.00
452.00
453.00
454.00
455.00
456.00
456.06
457.00
457.20
458.00
459.00
459.30
46.00
46.04
46.20
46.99
460.00
461.00
462.00
463.00
464.00
465.00
466.00
467.00
468.00
468.76
469.00
47.00
47.20
47.22
47.29
47.35
47.50
47.60
47.62
47.70
470.00
471.00
472.00
473.00
474.00
475.00
476.00
477.00
478.00
479.00
479.30
48.00
48.70
48.90
480.00
481.00
481.46
482.00
483.00
484.00
485.00
486.00
487.00
488.00
489.00
49.00
49.20
49.30
49.40
49.50
49.60
49.70
490.00
491.00
491.49
492.00
493.00
494.00
494.16
494.67
495.00
496.00
497.00
498.00
499.00
499.30
5.00
5.10
5.15
5.23
5.28
5.30
5.36
5.50
5.60
5.80
5.94
50.00
50.17
50.39
50.47
50.50
50.52
50.80
500.00
504.00
505.00
506.86
508.00
51.00
51.10
51.20
51.50
51.60
510.00
515.00
516.00
518.50
519.30
52.00
52.07
52.20
52.30
52.40
52.50
52.60
520.00
524.50
529.30
53.00
53.09
53.34
53.50
53.57
53.64
53.70
53.97
530.00
532.26
54.00
54.20
54.30
54.40
54.50
54.60
540.00
544.00
545.00
545.47
549.00
55.00
55.20
55.25
55.30
55.50
55.56
55.60
552.00
555.00
557.66
56.00
56.20
56.52
56.74
56.82
56.87
560.00
569.00
57.00
57.15
57.20
57.60
570.00
575.00
579.00
58.00
58.42
58.74
580.00
582.65
59.00
59.20
59.30
59.36
59.40
59.50
59.60
59.69
59.70
59.92
59.99
594.00
594.30
596.27
6.00
6.02
6.07
6.10
6.30
6.35
6.40
6.50
6.60
6.75
6.80
6.90
60.00
60.05
60.32
600.00
608.10
61.00
61.20
61.50
61.60
61.90
610.00
615.00
62.00
62.20
62.30
62.50
62.60
62.87
63.00
63.09
63.17
63.22
63.50
630.00
633.50
638.00
64.00
64.20
64.30
64.40
64.50
64.60
64.77
647.07
65.00
65.10
650.00
658.85
658.88
66.00
66.04
66.27
66.34
66.40
66.50
66.60
66.67
67.00
67.10
67.20
67.60
67.95
670.00
675.16
68.00
68.26
683.00
69.00
69.20
69.22
69.30
69.40
69.44
69.50
69.52
69.57
69.60
69.85
699.00
7.00
7.10
7.20
7.30
7.50
7.52
7.59
7.60
7.65
7.80
7.93
7.94
70.00
70.20
70.50
700.00
702.66
71.00
71.12
71.20
71.44
72.00
72.20
72.30
72.39
72.62
72.69
72.75
724.00
725.00
73.00
73.02
730.50
732.50
74.00
74.20
74.30
74.40
74.50
74.60
74.63
745.00
75.00
75.57
75.79
75.87
75.92
76.00
760.00
77.00
77.20
77.50
78.00
78.50
78.74
78.97
782.00
79.00
79.20
79.30
79.40
79.50
79.60
79.73
8.00
8.10
8.30
8.35
8.50
8.60
8.70
8.73
8.76
8.80
8.90
8.92
80.00
80.60
800.00
81.00
81.20
81.50
81.92
82.00
82.14
82.20
82.22
82.27
82.50
83.00
83.80
836.50
84.00
84.10
84.20
84.30
84.40
84.50
84.60
85.00
85.09
85.32
85.34
86.00
86.50
87.00
87.20
87.50
88.00
88.27
88.49
88.57
88.62
880.00
89.00
89.10
89.20
89.30
89.40
89.50
89.60
89.69
890.00
9.00
9.10
9.13
9.19
9.20
9.25
9.30
9.34
9.50
9.52
9.53
9.60
9.80
9.90
90.00
91.00
91.44
91.67
91.70
92.00
92.20
92.50
92.75
93.00
93.50
94.00
94.10
94.20
94.30
94.40
94.50
94.60
94.62
94.84
94.92
94.97
95.00
96.00
96.60
97.00
97.20
97.50
97.79
98.00
98.02
98.05
99.00
99.10
99.20
99.30
99.40
99.50
99.60