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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.

Metric O-Rings
Unit of Measure
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Item #

IntegrationID

Type

Material

Cross Reference

Cross Section Width

Durometer

Inside Diameter

Quantity
44.3 X 5.7 U-70 N/A
140366
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 5.70 mm N/A 70 N/A 44.30 mm
44.5 X 3 U-70 N/A
140370
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.00 mm N/A 70 N/A 44.50 mm
44.5 X 6 U-70 N/A
140371
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 6.00 mm N/A 70 N/A 44.50 mm
44.6 X 2.4 U-70 N/A
140372
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 2.40 mm N/A 70 N/A 44.60 mm
440 X 3 U-70 N/A
140374
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.00 mm N/A 70 N/A 440.00 mm
440 X 3.5 U-70 N/A
140375
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.50 mm N/A 70 N/A 440.00 mm
440 X 4 U-70 N/A
140376
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 4.00 mm N/A 70 N/A 440.00 mm
441 X 4 U-70 N/A
140377
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 4.00 mm N/A 70 N/A 441.00 mm
442 X 4 U-70 N/A
140378
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 4.00 mm N/A 70 N/A 442.00 mm
443 X 4 U-70 N/A
140379
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 4.00 mm N/A 70 N/A 443.00 mm
444 X 4 U-70 N/A
140381
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 4.00 mm N/A 70 N/A 444.00 mm
445 X 4 U-70 N/A
140382
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 4.00 mm N/A 70 N/A 445.00 mm
446 X 4 U-70 N/A
140383
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 4.00 mm N/A 70 N/A 446.00 mm
446 X 6 U-70 N/A
140384
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 6.00 mm N/A 70 N/A 446.00 mm
447 X 4 U-70 N/A
140385
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 4.00 mm N/A 70 N/A 447.00 mm
448 X 4 U-70 N/A
140386
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 4.00 mm N/A 70 N/A 448.00 mm
448 X 6 U-70 N/A
140387
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 6.00 mm N/A 70 N/A 448.00 mm
449 X 4 U-70 N/A
140388
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 4.00 mm N/A 70 N/A 449.00 mm
449.2 X 5.7 U-70 N/A
140389
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 5.70 mm N/A 70 N/A 449.20 mm
45 X 1.5 U-70 N/A
140390
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 1.50 mm N/A 70 N/A 45.00 mm
45 X 2 U-70 N/A
140391
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 2.00 mm N/A 70 N/A 45.00 mm
45 X 2.5 U-70 N/A
140392
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 2.50 mm N/A 70 N/A 45.00 mm
45 X 3 U-70 N/A
140393
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.00 mm N/A 70 N/A 45.00 mm
45 X 3.5 U-70 N/A
140394
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.50 mm N/A 70 N/A 45.00 mm
45 X 3.55 U-70 N/A
140395
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.55 mm N/A 70 N/A 45.00 mm
Unit of Measure
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