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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
3.55 X 1.8 U-70 N/A
139494
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 1.80 mm N/A 70 N/A 3.55 mm
3.6 X 2.4 U-70 N/A
139495
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 2.40 mm N/A 70 N/A 3.60 mm
3.7 X 1.6 U-70 N/A
139498
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 1.60 mm N/A 70 N/A 3.70 mm
3.75 X 1.8 U-70 N/A
139499
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 1.80 mm N/A 70 N/A 3.75 mm
3.8 X 1.25 U-70 N/A
139500
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 1.25 mm N/A 70 N/A 3.80 mm
3.91 X 1.27 U-70 N/A
139502
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 1.27 mm N/A 70 N/A 3.91 mm
30 X 1.5 U-70 N/A
139503
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 1.50 mm N/A 70 N/A 30.00 mm
30 X 2 U-70 N/A
139504
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 2.00 mm N/A 70 N/A 30.00 mm
30 X 2.5 U-70 N/A
139505
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 2.50 mm N/A 70 N/A 30.00 mm
30 X 2.65 U-70 N/A
139506
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 2.65 mm N/A 70 N/A 30.00 mm
30 X 3 U-70 N/A
139507
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.00 mm N/A 70 N/A 30.00 mm
30 X 3.5 U-70 N/A
139508
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.50 mm N/A 70 N/A 30.00 mm
30 X 3.55 U-70 N/A
139509
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.55 mm N/A 70 N/A 30.00 mm
30 X 4 U-70 N/A
139510
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 4.00 mm N/A 70 N/A 30.00 mm
30 X 4.5 U-70 N/A
139511
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 4.50 mm N/A 70 N/A 30.00 mm
30 X 5 U-70 N/A
139512
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 5.00 mm N/A 70 N/A 30.00 mm
30 X 6 U-70 N/A
139513
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 6.00 mm N/A 70 N/A 30.00 mm
30.2 X 3 U-70 N/A
139514
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.00 mm N/A 70 N/A 30.20 mm
30.3 X 2.4 U-70 N/A
139515
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 2.40 mm N/A 70 N/A 30.30 mm
30.5 X 1 U-70 N/A
139516
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 1.00 mm N/A 70 N/A 30.50 mm
30.5 X 1.5 U-70 N/A
139517
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 1.50 mm N/A 70 N/A 30.50 mm
30.5 X 2 U-70 N/A
139518
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 2.00 mm N/A 70 N/A 30.50 mm
30.5 X 2.5 U-70 N/A
139519
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 2.50 mm N/A 70 N/A 30.50 mm
30.5 X 3 U-70 N/A
139520
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.00 mm N/A 70 N/A 30.50 mm
30.5 X 3.5 U-70 N/A
139521
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.50 mm N/A 70 N/A 30.50 mm
Unit of Measure
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