Metric Polyurethane O-Rings

OneMonroe’s Metric Polyurethane O-Rings are designed for maximum durability and exceptional sealing performance in a wide range of applications. Crafted from high-quality polyurethane, these O-rings offer outstanding resistance to abrasion, chemicals, and high-pressure environments, making them ideal for industries that demand both reliability and longevity. Whether used in hydraulics, pneumatics, or mechanical assemblies, OneMonroe’s Metric Polyurethane O-Rings deliver dependable sealing solutions that withstand tough conditions, ensuring your systems operate smoothly and efficiently.

Our metric O-rings are available in various sizes to provide versatility and precision for any engineering or industrial requirement. These O-rings are specifically designed to provide a reliable seal for metric-based equipment, allowing for exact fitment and minimal leakage. The superior strength and elasticity of polyurethane make these O-rings more durable than traditional rubber alternatives, significantly extending the service life and reducing maintenance downtime. With their exceptional chemical and temperature resistance, OneMonroe Metric Polyurethane O-Rings are a trusted choice for applications ranging from automotive systems to heavy machinery and beyond.

OneMonroe is committed to providing premium-quality products that meet the rigorous demands of our clients. Our polyurethane O-rings undergo stringent quality checks and are manufactured to exact specifications, ensuring reliable performance in diverse environments. As a trusted provider of industrial and engineering components, we support our clients with expert guidance and a wide selection of high-quality sealing solutions. When you choose OneMonroe Metric Polyurethane O-Rings, you’re investing in dependable performance, longevity, and efficiency for all your sealing needs.

For more information, please see: Comparison Properties Chart, PTFE Encapsulated O-rings, Material Shelf Life, and O-ring Groove Design Chart.

Item #	IntegrationID	Type	Material	Cross Reference	Cross Section Width	Durometer	Inside Diameter
399.5 X 8.4 U-70	N/A 140140	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P400	N/A 8.40 mm	N/A 70	N/A 399.50 mm
39.7 X 3.5 U-70	N/A 140101	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P40	N/A 3.50 mm	N/A 70	N/A 39.70 mm
3.8 X 1.9 U-70	N/A 139501	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P4	N/A 1.90 mm	N/A 70	N/A 3.80 mm
38.7 X 3.5 U-70	N/A 140036	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P39	N/A 3.50 mm	N/A 70	N/A 38.70 mm
384.5 X 8.4 U-70	N/A 140058	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P385	N/A 8.40 mm	N/A 70	N/A 384.50 mm
37.7 X 3.5 U-70	N/A 139979	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P38	N/A 3.50 mm	N/A 70	N/A 37.70 mm
374.5 X 8.4 U-70	N/A 139999	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P375	N/A 8.40 mm	N/A 70	N/A 374.50 mm
359.5 X 8.4 U-70	N/A 139891	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P360	N/A 8.40 mm	N/A 70	N/A 359.50 mm
35.7 X 3.5 U-70	N/A 139849	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P36	N/A 3.50 mm	N/A 70	N/A 35.70 mm
354.5 X 8.4 U-70	N/A 139868	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P355	N/A 8.40 mm	N/A 70	N/A 354.50 mm
35.2 X 3.5 U-70	N/A 139840	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P35.5	N/A 3.50 mm	N/A 70	N/A 35.20 mm
34.7 X 3.5 U-70	N/A 139789	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P35	N/A 3.50 mm	N/A 70	N/A 34.70 mm
339.5 X 8.4 U-70	N/A 139761	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P340	N/A 8.40 mm	N/A 70	N/A 339.50 mm
30.7 X 3.5 U-70	N/A 139522	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P34	N/A 3.50 mm	N/A 70	N/A 30.70 mm
33.7 X 3.5 U-70	N/A 139719	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P34	N/A 3.50 mm	N/A 70	N/A 33.70 mm
334.5 X 8.4 U-70	N/A 139739	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P335	N/A 8.40 mm	N/A 70	N/A 334.50 mm
319.5 X 8.4 U-70	N/A 139634	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P320	N/A 8.40 mm	N/A 70	N/A 319.50 mm
31.7 X 3.5 U-70	N/A 139588	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P32	N/A 3.50 mm	N/A 70	N/A 31.70 mm
314.5 X 8.4 U-70	N/A 139609	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P315	N/A 8.40 mm	N/A 70	N/A 314.50 mm
31.2 X 3.5 U-70	N/A 139576	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P31.5	N/A 3.50 mm	N/A 70	N/A 31.20 mm
299.5 X 8.4 U-70	N/A 139476	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P300	N/A 8.40 mm	N/A 70	N/A 299.50 mm
29.7 X 3.5 U-70	N/A 139428	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P30	N/A 3.50 mm	N/A 70	N/A 29.70 mm
2.8 X 1.9 U-70	N/A 138659	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P3	N/A 1.90 mm	N/A 70	N/A 2.80 mm
294.5 X 8.4 U-70	N/A 139457	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P295	N/A 8.40 mm	N/A 70	N/A 294.50 mm
289.5 X 8.4 U-70	N/A 139404	N/A Metric Standard O-Ring	N/A Polyurethane	N/A P290	N/A 8.40 mm	N/A 70	N/A 289.50 mm

N/A
140140

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P400

N/A 8.40 mm

N/A 70

N/A 399.50 mm

39.7 X 3.5 U-70

N/A
140101

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P40

N/A 3.50 mm

N/A 70

N/A 39.70 mm

3.8 X 1.9 U-70

N/A
139501

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P4

N/A 1.90 mm

N/A 70

N/A 3.80 mm

38.7 X 3.5 U-70

N/A
140036

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P39

N/A 3.50 mm

N/A 70

N/A 38.70 mm

384.5 X 8.4 U-70

N/A
140058

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P385

N/A 8.40 mm

N/A 70

N/A 384.50 mm

37.7 X 3.5 U-70

N/A
139979

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P38

N/A 3.50 mm

N/A 70

N/A 37.70 mm

374.5 X 8.4 U-70

N/A
139999

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P375

N/A 8.40 mm

N/A 70

N/A 374.50 mm

359.5 X 8.4 U-70

N/A
139891

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P360

N/A 8.40 mm

N/A 70

N/A 359.50 mm

35.7 X 3.5 U-70

N/A
139849

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P36

N/A 3.50 mm

N/A 70

N/A 35.70 mm

354.5 X 8.4 U-70

N/A
139868

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P355

N/A 8.40 mm

N/A 70

N/A 354.50 mm

35.2 X 3.5 U-70

N/A
139840

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P35.5

N/A 3.50 mm

N/A 70

N/A 35.20 mm

34.7 X 3.5 U-70

N/A
139789

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P35

N/A 3.50 mm

N/A 70

N/A 34.70 mm

339.5 X 8.4 U-70

N/A
139761

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P340

N/A 8.40 mm

N/A 70

N/A 339.50 mm

30.7 X 3.5 U-70

N/A
139522

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P34

N/A 3.50 mm

N/A 70

N/A 30.70 mm

33.7 X 3.5 U-70

N/A
139719

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P34

N/A 3.50 mm

N/A 70

N/A 33.70 mm

334.5 X 8.4 U-70

N/A
139739

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P335

N/A 8.40 mm

N/A 70

N/A 334.50 mm

319.5 X 8.4 U-70

N/A
139634

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P320

N/A 8.40 mm

N/A 70

N/A 319.50 mm

31.7 X 3.5 U-70

N/A
139588

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P32

N/A 3.50 mm

N/A 70

N/A 31.70 mm

314.5 X 8.4 U-70

N/A
139609

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P315

N/A 8.40 mm

N/A 70

N/A 314.50 mm

31.2 X 3.5 U-70

N/A
139576

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P31.5

N/A 3.50 mm

N/A 70

N/A 31.20 mm

299.5 X 8.4 U-70

N/A
139476

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P300

N/A 8.40 mm

N/A 70

N/A 299.50 mm

29.7 X 3.5 U-70

N/A
139428

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P30

N/A 3.50 mm

N/A 70

N/A 29.70 mm

2.8 X 1.9 U-70

N/A
138659

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P3

N/A 1.90 mm

N/A 70

N/A 2.80 mm

294.5 X 8.4 U-70

N/A
139457

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P295

N/A 8.40 mm

N/A 70

N/A 294.50 mm

289.5 X 8.4 U-70

N/A
139404

N/A Metric Standard O-Ring

N/A Polyurethane

N/A P290

N/A 8.40 mm

N/A 70

N/A 289.50 mm