JIS Polyurethane O-Rings

OneMonroe offers high-quality polyurethane O-rings designed for a wide range of demanding applications where reliability and durability are paramount. These O-rings are crafted from premium polyurethane material, which provides outstanding resistance to wear, tear, and abrasion, making them ideal for sealing in environments exposed to extreme pressure, temperature fluctuations, and chemical interactions. Their robust structure ensures a long-lasting, dependable seal, preventing leaks and maintaining optimal performance in even the toughest industrial settings. Whether you need a solution for hydraulic systems, pneumatic equipment, or other machinery, OneMonroe Polyurethane O-Rings deliver precision and resilience.

Our range includes JIS (Japanese Industrial Standard) polyurethane O-rings, specifically engineered to meet stringent industry standards. These O-rings are available in various sizes and dimensions, allowing for a custom fit in numerous applications and systems. OneMonroe’s JIS polyurethane O-rings are known for their excellent resistance to oil, grease, and chemicals, which extends their lifespan and minimizes maintenance needs. This chemical resistance also makes them suitable for use in environments where other materials may degrade or fail prematurely. Additionally, their durable design ensures they can withstand high pressure without losing their integrity, making them a reliable choice for applications in demanding sectors like automotive, aerospace, and manufacturing.

At OneMonroe, we understand the importance of reliable sealing solutions in keeping your systems running smoothly and efficiently. Our polyurethane O-rings are manufactured to provide unmatched durability and performance, making them an investment in quality and reliability. Backed by OneMonroe’s commitment to excellence, these O-rings are an ideal choice for customers seeking high-performance sealing solutions that excel in both everyday and high-stress environments. Choose OneMonroe Polyurethane O-Rings for superior protection, a longer service life, and the peace of mind that comes with quality engineering and trusted materials.

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 U-90	N/A 179966	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.331 in8.40 mm	N/A 90	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 U-70	N/A 179967	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.331 in8.40 mm	N/A 70	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 U-90	N/A 179968	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.331 in8.40 mm	N/A 90	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 U-70	N/A 179969	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.138 in3.50 mm	N/A 70	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 U-90	N/A 179970	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.138 in3.50 mm	N/A 90	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 U-70	N/A 179971	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.331 in8.40 mm	N/A 70	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 U-90	N/A 179972	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.331 in8.40 mm	N/A 90	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 U-70	N/A 179973	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.138 in3.50 mm	N/A 70	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 U-90	N/A 179974	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.138 in3.50 mm	N/A 90	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 U-70	N/A 179975	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.138 in3.50 mm	N/A 70	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 U-90	N/A 179976	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.138 in3.50 mm	N/A 90	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 U-70	N/A 179977	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.331 in8.40 mm	N/A 70	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 U-90	N/A 179978	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.331 in8.40 mm	N/A 90	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 U-70	N/A 179979	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.138 in3.50 mm	N/A 70	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 U-90	N/A 179980	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.138 in3.50 mm	N/A 90	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 U-70	N/A 179981	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.331 in8.40 mm	N/A 70	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 U-90	N/A 179982	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.331 in8.40 mm	N/A 90	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 U-70	N/A 179983	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.331 in8.40 mm	N/A 70	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 U-90	N/A 179984	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.331 in8.40 mm	N/A 90	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 U-70	N/A 179985	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.138 in3.50 mm	N/A 70	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 U-90	N/A 179986	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.138 in3.50 mm	N/A 90	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 U-70	N/A 179987	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.331 in8.40 mm	N/A 70	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 U-90	N/A 179988	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.331 in8.40 mm	N/A 90	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 U-70	N/A 179989	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.138 in3.50 mm	N/A 70	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 U-90	N/A 179990	N/A JIS Standard O-Ring	N/A Polyurethane	N/A 0.138 in3.50 mm	N/A 90	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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No Preference
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
89.50
89.60
9.50
9.80
94.40
94.50
94.60
940.50
99.00
99.40
99.50
99.60

No Preference
0.098
0.138
0.150
0.177
0.189
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
0.453
0.465
0.472
0.484
0.531
0.543
0.571
0.583
0.610
0.622
0.689
0.701
0.768
0.780
0.819
0.846
0.854
0.858
0.862
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
1.220
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
1.957
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