Monroe
OneMonroe
Locations Throughout the Country
ISO 9001:2015
Tel: (877) 740-2007
Fax: (800) 453-9683
Email: sales@askmonroe.com
Website: monroeengineering.com
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OneMonroe Polyurethane O-Rings are designed for applications that demand superior wear resistance, flexibility, and resilience. Constructed from high-quality polyurethane material, these O-rings offer an excellent balance between strength and elasticity, making them perfect for heavy-duty applications where traditional rubber rings may fail. Polyurethane is renowned for its exceptional tear resistance, abrasion tolerance, and longevity, enabling OneMonroe O-Rings to deliver reliable performance even in challenging environments. From industrial machinery and automotive components to hydraulic and pneumatic systems, our polyurethane O-rings provide a dependable seal in numerous applications.

These O-rings are manufactured to precise standards, ensuring a consistent and reliable fit for various equipment and machinery. Polyurethane material is particularly well-suited for sealing applications that encounter high-pressure or high-vibration conditions, as it is less prone to deformation and degradation over time. Available in a broad range of sizes, OneMonroe Polyurethane O-Rings meet diverse requirements, providing dependable sealing solutions that minimize maintenance and downtime. Our commitment to quality means each O-ring undergoes rigorous testing to ensure optimal performance, whether in low-friction, static sealing, or dynamic, high-motion environments.

At Monroe, we prioritize durability, efficiency, and adaptability in every product we offer. Our polyurethane O-rings are specifically engineered for durability and longevity, reducing the need for frequent replacements. For industries where reliability is essential, OneMonroe Polyurethane O-Rings provide a practical and cost-effective solution that withstands the rigors of daily operation. Whether you need to upgrade an existing system or are working on a new project, OneMonroe offers the high-performance polyurethane O-rings you can count on to keep your equipment running smoothly and effectively.

For more information, please see: Comparison Properties Chart, PTFE Encapsulated O-rings, Material Shelf Life, and O-ring Groove Design Chart.

BS O-Rings
Unit of Measure
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Item #

IntegrationID

Type

Material

Cross Section Width

Durometer

Inside Diameter

CSW Tolerance

BS Number

Quantity
BS356 U-70 N/A
182741 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 70 N/A 5.350 in135.89 mm N/A 0.005 in0.13 mm N/A -356
BS356 U-90 N/A
182742 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 90 N/A 5.350 in135.89 mm N/A 0.005 in0.13 mm N/A -356
BS355 U-70 N/A
182743 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 70 N/A 5.225 in132.72 mm N/A 0.005 in0.13 mm N/A -355
BS355 U-90 N/A
182744 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 90 N/A 5.225 in132.72 mm N/A 0.005 in0.13 mm N/A -355
BS354 U-70 N/A
182745 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 70 N/A 5.100 in129.54 mm N/A 0.005 in0.13 mm N/A -354
BS354 U-90 N/A
182746 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 90 N/A 5.100 in129.54 mm N/A 0.005 in0.13 mm N/A -354
BS353 U-70 N/A
182747 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 70 N/A 4.975 in126.37 mm N/A 0.005 in0.13 mm N/A -353
BS353 U-90 N/A
182748 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 90 N/A 4.975 in126.37 mm N/A 0.005 in0.13 mm N/A -353
BS352 U-70 N/A
182749 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 70 N/A 4.850 in123.19 mm N/A 0.005 in0.13 mm N/A -352
BS352 U-90 N/A
182750 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 90 N/A 4.850 in123.19 mm N/A 0.005 in0.13 mm N/A -352
BS351 U-70 N/A
182751 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 70 N/A 4.725 in120.02 mm N/A 0.005 in0.13 mm N/A -351
BS351 U-90 N/A
182752 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 90 N/A 4.725 in120.02 mm N/A 0.005 in0.13 mm N/A -351
BS350 U-70 N/A
182753 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 70 N/A 4.600 in116.84 mm N/A 0.005 in0.13 mm N/A -350
BS350 U-90 N/A
182754 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 90 N/A 4.600 in116.84 mm N/A 0.005 in0.13 mm N/A -350
BS349 U-70 N/A
182755 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 70 N/A 4.475 in113.67 mm N/A 0.005 in0.13 mm N/A -349
BS349 U-90 N/A
182756 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 90 N/A 4.475 in113.67 mm N/A 0.005 in0.13 mm N/A -349
BS348 U-70 N/A
182757 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 70 N/A 4.350 in110.49 mm N/A 0.005 in0.13 mm N/A -348
BS348 U-90 N/A
182758 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 90 N/A 4.350 in110.49 mm N/A 0.005 in0.13 mm N/A -348
BS347 U-70 N/A
182759 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 70 N/A 4.225 in107.32 mm N/A 0.005 in0.13 mm N/A -347
BS347 U-90 N/A
182760 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 90 N/A 4.225 in107.32 mm N/A 0.005 in0.13 mm N/A -347
BS346 U-70 N/A
182761 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 70 N/A 4.100 in104.14 mm N/A 0.005 in0.13 mm N/A -346
BS346 U-90 N/A
182762 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 90 N/A 4.100 in104.14 mm N/A 0.005 in0.13 mm N/A -346
BS345 U-70 N/A
182763 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 70 N/A 3.975 in100.97 mm N/A 0.005 in0.13 mm N/A -345
BS345 U-90 N/A
182764 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 90 N/A 3.975 in100.97 mm N/A 0.005 in0.13 mm N/A -345
BS344 U-70 N/A
182765 		N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 70 N/A 3.850 in97.79 mm N/A 0.005 in0.13 mm N/A -344
Unit of Measure
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