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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
29.2 X 3.5 U-70 N/A
139417
N/A Metric Standard O-Ring N/A Polyurethane N/A P29.5 N/A 3.50 mm N/A 70 N/A 29.20 mm
28.7 X 3.5 U-70 N/A
139361
N/A Metric Standard O-Ring N/A Polyurethane N/A P29 N/A 3.50 mm N/A 70 N/A 28.70 mm
284.5 X 8.4 U-70 N/A
139384
N/A Metric Standard O-Ring N/A Polyurethane N/A P285 N/A 8.40 mm N/A 70 N/A 284.50 mm
279.5 X 8.4 U-70 N/A
139338
N/A Metric Standard O-Ring N/A Polyurethane N/A P280 N/A 8.40 mm N/A 70 N/A 279.50 mm
27.7 X 3.5 U-70 N/A
139292
N/A Metric Standard O-Ring N/A Polyurethane N/A P28 N/A 3.50 mm N/A 70 N/A 27.70 mm
274.5 X 8.4 U-70 N/A
139317
N/A Metric Standard O-Ring N/A Polyurethane N/A P275 N/A 8.40 mm N/A 70 N/A 274.50 mm
269.5 X 8.4 U-70 N/A
139272
N/A Metric Standard O-Ring N/A Polyurethane N/A P271 N/A 8.40 mm N/A 70 N/A 269.50 mm
259.5 X 8.4 U-70 N/A
139200
N/A Metric Standard O-Ring N/A Polyurethane N/A P26t N/A 8.40 mm N/A 70 N/A 259.50 mm
264.5 X 8.4 U-70 N/A
139246
N/A Metric Standard O-Ring N/A Polyurethane N/A P265 N/A 8.40 mm N/A 70 N/A 264.50 mm
25.7 X 3.5 U-70 N/A
139151
N/A Metric Standard O-Ring N/A Polyurethane N/A P26 N/A 3.50 mm N/A 70 N/A 25.70 mm
254.5 X 8.4 U-70 N/A
139178
N/A Metric Standard O-Ring N/A Polyurethane N/A P255 N/A 8.40 mm N/A 70 N/A 254.50 mm
249.5 X 8.4 U-70 N/A
139124
N/A Metric Standard O-Ring N/A Polyurethane N/A P250 N/A 8.40 mm N/A 70 N/A 249.50 mm
25.2 X 3.5 U-70 N/A
139144
N/A Metric Standard O-Ring N/A Polyurethane N/A P25.5 N/A 3.50 mm N/A 70 N/A 25.20 mm
24.7 X 3.5 U-70 N/A
139061
N/A Metric Standard O-Ring N/A Polyurethane N/A P25 N/A 3.50 mm N/A 70 N/A 24.70 mm
244.5 X 8.4 U-70 N/A
139094
N/A Metric Standard O-Ring N/A Polyurethane N/A P245 N/A 8.40 mm N/A 70 N/A 244.50 mm
239.5 X 8.4 U-70 N/A
139035
N/A Metric Standard O-Ring N/A Polyurethane N/A P240 N/A 8.40 mm N/A 70 N/A 239.50 mm
23.7 X 3.5 U-70 N/A
138974
N/A Metric Standard O-Ring N/A Polyurethane N/A P24 N/A 3.50 mm N/A 70 N/A 23.70 mm
234.5 X 8.4 U-70 N/A
139003
N/A Metric Standard O-Ring N/A Polyurethane N/A P235 N/A 8.40 mm N/A 70 N/A 234.50 mm
229.5 X 8.4 U-70 N/A
138946
N/A Metric Standard O-Ring N/A Polyurethane N/A P230 N/A 8.40 mm N/A 70 N/A 229.50 mm
21.7 X 3.5 U-70 N/A
138785
N/A Metric Standard O-Ring N/A Polyurethane N/A P22A N/A 3.50 mm N/A 70 N/A 21.70 mm
224.5 X 8.4 U-70 N/A
138910
N/A Metric Standard O-Ring N/A Polyurethane N/A P225 N/A 8.40 mm N/A 70 N/A 224.50 mm
219.5 X 8.4 U-70 N/A
138853
N/A Metric Standard O-Ring N/A Polyurethane N/A P220 N/A 8.40 mm N/A 70 N/A 219.50 mm
22.1 X 3.5 U-70 N/A
138865
N/A Metric Standard O-Ring N/A Polyurethane N/A P22.4 N/A 3.50 mm N/A 70 N/A 22.10 mm
21.8 X 2.4 U-70 N/A
138786
N/A Metric Standard O-Ring N/A Polyurethane N/A P22 N/A 2.40 mm N/A 70 N/A 21.80 mm
209.5 X 8.4 U-70 N/A
138760
N/A Metric Standard O-Ring N/A Polyurethane N/A P21I N/A 8.40 mm N/A 70 N/A 209.50 mm
Unit of Measure
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