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
42.2 X 3 U-70	N/A 140276	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 3.00 mm	N/A 70	N/A 42.20 mm
42.5 X 3 U-70	N/A 140278	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 3.00 mm	N/A 70	N/A 42.50 mm
42.5 X 3.55 U-70	N/A 140279	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 3.55 mm	N/A 70	N/A 42.50 mm
42.5 X 5.3 U-70	N/A 140280	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 5.30 mm	N/A 70	N/A 42.50 mm
420 X 3.5 U-70	N/A 140283	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 3.50 mm	N/A 70	N/A 420.00 mm
420 X 4 U-70	N/A 140284	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 4.00 mm	N/A 70	N/A 420.00 mm
421 X 3.5 U-70	N/A 140285	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 3.50 mm	N/A 70	N/A 421.00 mm
421 X 4 U-70	N/A 140286	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 4.00 mm	N/A 70	N/A 421.00 mm
422 X 3.5 U-70	N/A 140287	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 3.50 mm	N/A 70	N/A 422.00 mm
422 X 4 U-70	N/A 140288	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 4.00 mm	N/A 70	N/A 422.00 mm
422 X 6 U-70	N/A 140289	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 6.00 mm	N/A 70	N/A 422.00 mm
422.2 X 6.2 U-70	N/A 140290	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 6.20 mm	N/A 70	N/A 422.20 mm
422.2 X 6.9 U-70	N/A 140291	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 6.90 mm	N/A 70	N/A 422.20 mm
423 X 3.5 U-70	N/A 140292	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 3.50 mm	N/A 70	N/A 423.00 mm
423 X 4 U-70	N/A 140293	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 4.00 mm	N/A 70	N/A 423.00 mm
424 X 3.5 U-70	N/A 140294	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 3.50 mm	N/A 70	N/A 424.00 mm
424 X 4 U-70	N/A 140295	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 4.00 mm	N/A 70	N/A 424.00 mm
425 X 3.5 U-70	N/A 140296	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 3.50 mm	N/A 70	N/A 425.00 mm
425 X 4 U-70	N/A 140297	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 4.00 mm	N/A 70	N/A 425.00 mm
425 X 7 U-70	N/A 140298	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 7.00 mm	N/A 70	N/A 425.00 mm
425 X 8 U-70	N/A 140299	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 8.00 mm	N/A 70	N/A 425.00 mm
426 X 3.5 U-70	N/A 140301	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 3.50 mm	N/A 70	N/A 426.00 mm
426 X 4 U-70	N/A 140302	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 4.00 mm	N/A 70	N/A 426.00 mm
427 X 3.5 U-70	N/A 140303	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 3.50 mm	N/A 70	N/A 427.00 mm
427 X 4 U-70	N/A 140304	N/A Metric Standard O-Ring	N/A Polyurethane	N/A	N/A 4.00 mm	N/A 70	N/A 427.00 mm

N/A
140276

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 3.00 mm

N/A 70

N/A 42.20 mm

42.5 X 3 U-70

N/A
140278

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 3.00 mm

N/A 70

N/A 42.50 mm

42.5 X 3.55 U-70

N/A
140279

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 3.55 mm

N/A 70

N/A 42.50 mm

42.5 X 5.3 U-70

N/A
140280

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 5.30 mm

N/A 70

N/A 42.50 mm

420 X 3.5 U-70

N/A
140283

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 3.50 mm

N/A 70

N/A 420.00 mm

420 X 4 U-70

N/A
140284

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 4.00 mm

N/A 70

N/A 420.00 mm

421 X 3.5 U-70

N/A
140285

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 3.50 mm

N/A 70

N/A 421.00 mm

421 X 4 U-70

N/A
140286

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 4.00 mm

N/A 70

N/A 421.00 mm

422 X 3.5 U-70

N/A
140287

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 3.50 mm

N/A 70

N/A 422.00 mm

422 X 4 U-70

N/A
140288

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 4.00 mm

N/A 70

N/A 422.00 mm

422 X 6 U-70

N/A
140289

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 6.00 mm

N/A 70

N/A 422.00 mm

422.2 X 6.2 U-70

N/A
140290

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 6.20 mm

N/A 70

N/A 422.20 mm

422.2 X 6.9 U-70

N/A
140291

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 6.90 mm

N/A 70

N/A 422.20 mm

423 X 3.5 U-70

N/A
140292

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 3.50 mm

N/A 70

N/A 423.00 mm

423 X 4 U-70

N/A
140293

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 4.00 mm

N/A 70

N/A 423.00 mm

424 X 3.5 U-70

N/A
140294

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 3.50 mm

N/A 70

N/A 424.00 mm

424 X 4 U-70

N/A
140295

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 4.00 mm

N/A 70

N/A 424.00 mm

425 X 3.5 U-70

N/A
140296

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 3.50 mm

N/A 70

N/A 425.00 mm

425 X 4 U-70

N/A
140297

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 4.00 mm

N/A 70

N/A 425.00 mm

425 X 7 U-70

N/A
140298

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 7.00 mm

N/A 70

N/A 425.00 mm

425 X 8 U-70

N/A
140299

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 8.00 mm

N/A 70

N/A 425.00 mm

426 X 3.5 U-70

N/A
140301

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 3.50 mm

N/A 70

N/A 426.00 mm

426 X 4 U-70

N/A
140302

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 4.00 mm

N/A 70

N/A 426.00 mm

427 X 3.5 U-70

N/A
140303

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 3.50 mm

N/A 70

N/A 427.00 mm

427 X 4 U-70

N/A
140304

N/A Metric Standard O-Ring

N/A Polyurethane

N/A

N/A 4.00 mm

N/A 70

N/A 427.00 mm