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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
35.5 X 1.5 U-70 N/A
139842
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 1.50 mm N/A 70 N/A 35.50 mm
35.5 X 2.5 U-70 N/A
139843
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 2.50 mm N/A 70 N/A 35.50 mm
35.5 X 2.65 U-70 N/A
139844
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 2.65 mm N/A 70 N/A 35.50 mm
35.5 X 3 U-70 N/A
139845
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.00 mm N/A 70 N/A 35.50 mm
35.5 X 3.55 U-70 N/A
139846
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.55 mm N/A 70 N/A 35.50 mm
35.5 X 4.5 U-70 N/A
139847
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 4.50 mm N/A 70 N/A 35.50 mm
35.6 X 3.6 U-70 N/A
139848
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.60 mm N/A 70 N/A 35.60 mm
350 X 3 U-70 N/A
139850
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.00 mm N/A 70 N/A 350.00 mm
350 X 3.5 U-70 N/A
139851
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.50 mm N/A 70 N/A 350.00 mm
350 X 4 U-70 N/A
139852
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 4.00 mm N/A 70 N/A 350.00 mm
350 X 5 U-70 N/A
139853
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 5.00 mm N/A 70 N/A 350.00 mm
350 X 6 U-70 N/A
139854
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 6.00 mm N/A 70 N/A 350.00 mm
350 X 8 U-70 N/A
139855
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 8.00 mm N/A 70 N/A 350.00 mm
351 X 3.5 U-70 N/A
139856
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.50 mm N/A 70 N/A 351.00 mm
351 X 4 U-70 N/A
139857
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 4.00 mm N/A 70 N/A 351.00 mm
351 X 5 U-70 N/A
139858
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 5.00 mm N/A 70 N/A 351.00 mm
352 X 3.5 U-70 N/A
139859
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.50 mm N/A 70 N/A 352.00 mm
352 X 4 U-70 N/A
139860
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 4.00 mm N/A 70 N/A 352.00 mm
352 X 5 U-70 N/A
139861
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 5.00 mm N/A 70 N/A 352.00 mm
353 X 3.5 U-70 N/A
139862
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.50 mm N/A 70 N/A 353.00 mm
353 X 4 U-70 N/A
139863
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 4.00 mm N/A 70 N/A 353.00 mm
353 X 5 U-70 N/A
139864
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 5.00 mm N/A 70 N/A 353.00 mm
354 X 3.5 U-70 N/A
139865
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 3.50 mm N/A 70 N/A 354.00 mm
354 X 4 U-70 N/A
139866
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 4.00 mm N/A 70 N/A 354.00 mm
354 X 5 U-70 N/A
139867
N/A Metric Standard O-Ring N/A Polyurethane N/A N/A 5.00 mm N/A 70 N/A 354.00 mm
Unit of Measure
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