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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
296 X 5 U-70 N/A
139464
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 5.00 mm N/A 70 N/A 296.00 mm
297 X 3.5 U-70 N/A
139465
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.50 mm N/A 70 N/A 297.00 mm
297 X 4 U-70 N/A
139466
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 4.00 mm N/A 70 N/A 297.00 mm
297 X 5 U-70 N/A
139467
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 5.00 mm N/A 70 N/A 297.00 mm
298 X 3.5 U-70 N/A
139469
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.50 mm N/A 70 N/A 298.00 mm
298 X 4 U-70 N/A
139470
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 4.00 mm N/A 70 N/A 298.00 mm
298 X 5 U-70 N/A
139471
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 5.00 mm N/A 70 N/A 298.00 mm
299 X 3.5 U-70 N/A
139472
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.50 mm N/A 70 N/A 299.00 mm
299 X 4 U-70 N/A
139473
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 4.00 mm N/A 70 N/A 299.00 mm
299 X 5 U-70 N/A
139474
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 5.00 mm N/A 70 N/A 299.00 mm
3 X 1 U-70 N/A
139477
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 1.00 mm N/A 70 N/A 3.00 mm
3 X 1.5 U-70 N/A
139478
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 1.50 mm N/A 70 N/A 3.00 mm
3 X 2 U-70 N/A
139479
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 2.00 mm N/A 70 N/A 3.00 mm
3 X 3 U-70 N/A
139480
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.00 mm N/A 70 N/A 3.00 mm
3.1 X 1.6 U-70 N/A
139481
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 1.60 mm N/A 70 N/A 3.10 mm
3.15 X 1.8 U-70 N/A
139482
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 1.80 mm N/A 70 N/A 3.15 mm
3.2 X 1.6 U-70 N/A
139484
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 1.60 mm N/A 70 N/A 3.20 mm
3.25 X 1.27 U-70 N/A
139485
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 1.27 mm N/A 70 N/A 3.25 mm
3.3 X 1 U-70 N/A
139486
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 1.00 mm N/A 70 N/A 3.30 mm
3.3 X 2.4 U-70 N/A
139487
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 2.40 mm N/A 70 N/A 3.30 mm
3.4 X 1.9 U-70 N/A
139488
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 1.90 mm N/A 70 N/A 3.40 mm
3.5 X 1 U-70 N/A
139489
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 1.00 mm N/A 70 N/A 3.50 mm
3.5 X 1.2 U-70 N/A
139490
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 1.20 mm N/A 70 N/A 3.50 mm
3.5 X 2 U-70 N/A
139492
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 2.00 mm N/A 70 N/A 3.50 mm
3.5 X 3 U-70 N/A
139493
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.00 mm N/A 70 N/A 3.50 mm
Unit of Measure
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