JIS Aflas O-Rings | OneMonroe

OneMonroe Aflas O-Rings are crafted to meet the demanding needs of applications that require robust chemical and thermal resistance. Made from premium-quality Aflas, these O-rings are designed to withstand exposure to a wide range of chemicals, including acids, alkalis, amines, and steam, making them an essential component in industrial settings where chemical integrity is critical. They excel in high-temperature environments, withstanding heat up to 446°F (230°C), which makes them an excellent choice for applications in the automotive, aerospace, and oil and gas industries where durability and safety are non-negotiable. Their resilience ensures optimal performance in even the harshest operational conditions.

OneMonroe’s Aflas O-Rings adhere to the JIS (Japanese Industrial Standards), which means they are meticulously manufactured for precision and reliability. These O-rings are particularly valuable for equipment that operates in demanding environments with extended exposure to chemicals, oils, or extreme heat, as they prevent leaks and ensure the longevity of components. Whether used in pumps, valves, or compressors, OneMonroe Aflas O-Rings maintain their integrity and performance over extended periods, helping to minimize downtime and repair costs for critical machinery. Additionally, their resistance to electrical conductivity makes them highly suitable for electrical and electronic applications where insulation is essential.

At OneMonroe, we are committed to delivering products that match the highest standards of quality and reliability. Our Aflas O-Rings undergo rigorous quality testing to ensure they meet stringent industry requirements, giving our clients peace of mind knowing they have dependable sealing solutions. With the combination of chemical resistance, thermal durability, and precision manufacturing, OneMonroe Aflas O-Rings offer unmatched performance for various industries, providing the strength and reliability needed in today’s challenging industrial environments.

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	ID Tolerance	JIS Number

P290 AFLAS-83	N/A 180746	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.331 in8.40 mm	N/A 83	N/A 289.50 mm11.398 in	N/A 0.006 in0.18 mm	N/A 0.031 in0.80 mm	N/A P-290
P295 AFLAS-75	N/A 180747	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.331 in8.40 mm	N/A 75	N/A 294.50 mm11.594 in	N/A 0.006 in0.18 mm	N/A 0.031 in0.80 mm	N/A P-295
P295 AFLAS-83	N/A 180748	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.331 in8.40 mm	N/A 83	N/A 294.50 mm11.594 in	N/A 0.006 in0.18 mm	N/A 0.031 in0.80 mm	N/A P-295
P30 AFLAS-75	N/A 180749	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.138 in3.50 mm	N/A 75	N/A 29.70 mm1.169 in	N/A 0.004 in0.10 mm	N/A 0.006 in0.15 mm	N/A P-30
P30 AFLAS-83	N/A 180750	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.138 in3.50 mm	N/A 83	N/A 29.70 mm1.169 in	N/A 0.004 in0.10 mm	N/A 0.006 in0.15 mm	N/A P-30
P300 AFLAS-75	N/A 180751	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.331 in8.40 mm	N/A 75	N/A 299.50 mm11.791 in	N/A 0.006 in0.18 mm	N/A 0.031 in0.80 mm	N/A P-300
P300 AFLAS-83	N/A 180752	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.331 in8.40 mm	N/A 83	N/A 299.50 mm11.791 in	N/A 0.006 in0.18 mm	N/A 0.031 in0.80 mm	N/A P-300
P31 AFLAS-75	N/A 180753	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.138 in3.50 mm	N/A 75	N/A 30.70 mm1.209 in	N/A 0.004 in0.10 mm	N/A 0.006 in0.15 mm	N/A P-31
P31 AFLAS-83	N/A 180754	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.138 in3.50 mm	N/A 83	N/A 30.70 mm1.209 in	N/A 0.004 in0.10 mm	N/A 0.006 in0.15 mm	N/A P-31
P31.5 AFLAS-75	N/A 180755	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.138 in3.50 mm	N/A 75	N/A 31.20 mm1.228 in	N/A 0.004 in0.10 mm	N/A 0.006 in0.15 mm	N/A P-31.5
P31.5 AFLAS-83	N/A 180756	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.138 in3.50 mm	N/A 83	N/A 31.20 mm1.228 in	N/A 0.004 in0.10 mm	N/A 0.006 in0.15 mm	N/A P-31.5
P315 AFLAS-75	N/A 180757	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.331 in8.40 mm	N/A 75	N/A 314.50 mm12.382 in	N/A 0.006 in0.18 mm	N/A 0.039 in1.00 mm	N/A P-315
P315 AFLAS-83	N/A 180758	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.331 in8.40 mm	N/A 83	N/A 314.50 mm12.382 in	N/A 0.006 in0.18 mm	N/A 0.039 in1.00 mm	N/A P-315
P32 AFLAS-75	N/A 180759	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.138 in3.50 mm	N/A 75	N/A 31.70 mm1.248 in	N/A 0.004 in0.10 mm	N/A 0.006 in0.15 mm	N/A P-32
P32 AFLAS-83	N/A 180760	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.138 in3.50 mm	N/A 83	N/A 31.70 mm1.248 in	N/A 0.004 in0.10 mm	N/A 0.006 in0.15 mm	N/A P-32
P320 AFLAS-75	N/A 180761	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.331 in8.40 mm	N/A 75	N/A 319.50 mm12.579 in	N/A 0.006 in0.18 mm	N/A 0.039 in1.00 mm	N/A P-320
P320 AFLAS-83	N/A 180762	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.331 in8.40 mm	N/A 83	N/A 319.50 mm12.579 in	N/A 0.006 in0.18 mm	N/A 0.039 in1.00 mm	N/A P-320
P335 AFLAS-75	N/A 180763	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.331 in8.40 mm	N/A 75	N/A 334.50 mm13.169 in	N/A 0.006 in0.18 mm	N/A 0.039 in1.00 mm	N/A P-335
P335 AFLAS-83	N/A 180764	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.331 in8.40 mm	N/A 83	N/A 334.50 mm13.169 in	N/A 0.006 in0.18 mm	N/A 0.039 in1.00 mm	N/A P-335
P34 AFLAS-75	N/A 180765	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.138 in3.50 mm	N/A 75	N/A 33.70 mm1.327 in	N/A 0.004 in0.10 mm	N/A 0.006 in0.15 mm	N/A P-34
P34 AFLAS-83	N/A 180766	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.138 in3.50 mm	N/A 83	N/A 33.70 mm1.327 in	N/A 0.004 in0.10 mm	N/A 0.006 in0.15 mm	N/A P-34
P340 AFLAS-75	N/A 180767	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.331 in8.40 mm	N/A 75	N/A 339.50 mm13.366 in	N/A 0.006 in0.18 mm	N/A 0.039 in1.00 mm	N/A P-340
P340 AFLAS-83	N/A 180768	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.331 in8.40 mm	N/A 83	N/A 339.50 mm13.366 in	N/A 0.006 in0.18 mm	N/A 0.039 in1.00 mm	N/A P-340
P35 AFLAS-75	N/A 180769	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.138 in3.50 mm	N/A 75	N/A 34.70 mm1.366 in	N/A 0.004 in0.10 mm	N/A 0.006 in0.15 mm	N/A P-35
P35 AFLAS-83	N/A 180770	N/A JIS Standard O-Ring	N/A Aflas	N/A 0.138 in3.50 mm	N/A 83	N/A 34.70 mm1.366 in	N/A 0.004 in0.10 mm	N/A 0.006 in0.15 mm	N/A P-35

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10.70
10.80
101.60
104.40
104.50
104.60
1044.00
109.40
109.50
109.60
11.00
11.50
11.80
111.50
111.60
114.40
114.50
114.60
119.00
119.40
119.50
119.60
12.00
12.30
124.40
124.50
124.60
129.40
129.50
129.60
13.50
13.80
131.50
131.6
134.40
134.50
134.60
139.40
139.50
139.60
14.5
14.80
144.40
144.50
144.60
148.50
149.30
149.50
149.6
15.50
15.80
154.30
154.50
159.30
159.50
164.30
164.50
169.30
169.50
17.50
17.80
173.00
174.30
174.50
179.30
179.50
184.30
184.50
189.30
189.50
19.50
19.80
194.30
194.50
199.3
199.5
2.50
20.80
204.5
208.5
209.3
209.5
21.50
21.70
21.80
21.90
214.5
219.3
219.5
22.10
222.5
224.5
229.3
229.5
23.5
23.70
234.5
239.3
239.5
24.40
24.50
24.70
244.5
249.3
249.5
25.20
25.50
25.70
254.3
254.5
259.3
259.5
264.5
269.3
269.5
27.50
27.70
272
274.50
279.30
279.50
28.50
28.70
284.50
289.30
289.50
29.20
29.40
29.50
29.70
294.50
299.30
299.50
3.50
3.80
30.70
31.00
31.20
31.50
31.70
314.50
319.50
321.50
33.50
33.70
334.50
339.50
34.40
34.50
34.70
35.00
35.20
35.50
35.70
354.50
359.50
37.50
37.70
374.50
376.00
38.50
38.70
384.50
39.40
39.50
39.70
399.5
4.50
4.80
40.70
41.50
41.70
425.5
43.50
43.70
44.40
44.50
44.70
45.5
45.70
47.50
47.60
47.70
475.00
48.70
49.40
49.50
49.60
49.70
5.50
5.80
51.60
52.50
52.6
524.5
54.40
54.50
54.60
55.50
55.60
57.60
579.00
59.4
59.50
59.6
6.50
6.80
61.60
62.50
62.60
633.5
64.40
64.5
64.60
66.50
66.60
683.00
69.00
69.4
69.5
69.6
7.50
7.80
70.50
70.60
732.50
74.40
74.50
74.60
782.00
79.40
79.50
79.60
8.50
8.80
836.50
84.00
84.40
84.50
84.60
89.40
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89.60
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No Preference
0.098
0.138
0.150
0.177
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0.217
0.228
0.256
0.268
0.295
0.307
0.335
0.346
0.374
0.386
0.421
0.425
0.433
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0.465
0.472
0.484
0.531
0.543
0.571
0.583
0.610
0.622
0.689
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0.768
0.780
0.819
0.846
0.854
0.858
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0.870
0.925
0.933
0.961
0.965
0.972
0.992
1.004
1.012
1.083
1.091
1.122
1.130
1.150
1.157
1.161
1.169
1.209
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1.228
1.240
1.248
1.319
1.327
1.354
1.358
1.366
1.378
1.386
1.398
1.406
1.476
1.484
1.516
1.524
1.551
1.555
1.563
1.602
1.634
1.642
1.713
1.720
1.748
1.752
1.760
1.791
1.799
1.870
1.874
1.878
1.917
1.945
1.949
1.953
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10.012
10.020
10.209
10.217
10.413
10.602
10.610
10.709
10.807
10.996
11.004
11.201
11.390
11.398
11.594
11.783
11.791
12.382
12.579
12.657
13.169
13.366
13.957
14.154
14.744
14.803
15.138
15.728
16.752
18.701
2.031
2.067
2.071
2.142
2.146
2.150
2.185
2.189
2.268
2.339
2.343
2.346
2.425
2.461
2.465
2.535
2.539
2.543
2.618
2.622
2.717
2.732
2.736
2.740
2.776
2.780
2.929
2.933
2.937
20.650
22.795
24.941
26.890
28.839
3.126
3.130
3.134
3.307
3.323
3.327
3.331
3.520
3.524
3.528
3.717
3.720
3.724
3.898
3.913
3.917
3.921
30.787
32.933
37.028
4.000
4.110
4.114
4.118
4.307
4.311
4.315
4.390
4.394
4.504
4.508
4.512
4.685
4.701
4.705
4.709
4.898
4.902
4.906
41.102
5.094
5.098
5.102
5.177
5.181
5.291
5.295
5.299
5.488
5.492
5.496
5.685
5.689
5.693
5.846
5.878
5.886
5.890
6.075
6.083
6.272
6.280
6.469
6.476
6.665
6.673
6.811
6.862
6.870
7.059
7.067
7.256
7.264
7.453
7.461
7.650
7.657
7.846
7.854
8.051
8.209
8.240
8.248
8.445
8.634
8.642
8.760
8.839
9.028
9.035
9.232
9.421
9.429
9.626
9.815
9.823