
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.
 
            | Item # | IntegrationID | Type | Material | Cross Section Width | Durometer | Inside Diameter | CSW Tolerance | BS Number | Product Guides | Quantity | 
|---|---|---|---|---|---|---|---|---|---|---|
| BS435 U-70 | N/A 182641 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.275 in6.99 mm | N/A 70 | N/A 5.725 in145.42 mm | N/A 0.006 in0.15 mm | N/A -435 | N/A Seal Guides | |
| BS435 U-90 | N/A 182642 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.275 in6.99 mm | N/A 90 | N/A 5.725 in145.42 mm | N/A 0.006 in0.15 mm | N/A -435 | N/A Seal Guides | |
| BS434 U-70 | N/A 182643 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.275 in6.99 mm | N/A 70 | N/A 5.600 in142.24 mm | N/A 0.006 in0.15 mm | N/A -434 | N/A Seal Guides | |
| BS434 U-90 | N/A 182644 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.275 in6.99 mm | N/A 90 | N/A 5.600 in142.24 mm | N/A 0.006 in0.15 mm | N/A -434 | N/A Seal Guides | |
| BS433 U-70 | N/A 182645 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.275 in6.99 mm | N/A 70 | N/A 5.475 in139.07 mm | N/A 0.006 in0.15 mm | N/A -433 | N/A Seal Guides | |
| BS433 U-90 | N/A 182646 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.275 in6.99 mm | N/A 90 | N/A 5.475 in139.07 mm | N/A 0.006 in0.15 mm | N/A -433 | N/A Seal Guides | |
| BS432 U-70 | N/A 182647 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.275 in6.99 mm | N/A 70 | N/A 5.350 in135.89 mm | N/A 0.006 in0.15 mm | N/A -432 | N/A Seal Guides | |
| BS432 U-90 | N/A 182648 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.275 in6.99 mm | N/A 90 | N/A 5.350 in135.89 mm | N/A 0.006 in0.15 mm | N/A -432 | N/A Seal Guides | |
| BS431 U-70 | N/A 182649 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.275 in6.99 mm | N/A 70 | N/A 5.225 in132.72 mm | N/A 0.006 in0.15 mm | N/A -431 | N/A Seal Guides | |
| BS431 U-90 | N/A 182650 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.275 in6.99 mm | N/A 90 | N/A 5.225 in132.72 mm | N/A 0.006 in0.15 mm | N/A -431 | N/A Seal Guides | |
| BS430 U-70 | N/A 182651 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.275 in6.99 mm | N/A 70 | N/A 5.100 in129.54 mm | N/A 0.006 in0.15 mm | N/A -430 | N/A Seal Guides | |
| BS430 U-90 | N/A 182652 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.275 in6.99 mm | N/A 90 | N/A 5.100 in129.54 mm | N/A 0.006 in0.15 mm | N/A -430 | N/A Seal Guides | |
| BS429 U-70 | N/A 182653 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.275 in6.99 mm | N/A 70 | N/A 4.975 in126.37 mm | N/A 0.006 in0.15 mm | N/A -429 | N/A Seal Guides | |
| BS429 U-90 | N/A 182654 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.275 in6.99 mm | N/A 90 | N/A 4.975 in126.37 mm | N/A 0.006 in0.15 mm | N/A -429 | N/A Seal Guides | |
| BS428 U-70 | N/A 182655 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.275 in6.99 mm | N/A 70 | N/A 4.850 in123.19 mm | N/A 0.006 in0.15 mm | N/A -428 | N/A Seal Guides | |
| BS428 U-90 | N/A 182656 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.275 in6.99 mm | N/A 90 | N/A 4.850 in123.19 mm | N/A 0.006 in0.15 mm | N/A -428 | N/A Seal Guides | |
| BS427 U-70 | N/A 182657 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.275 in6.99 mm | N/A 70 | N/A 4.725 in120.02 mm | N/A 0.006 in0.15 mm | N/A -427 | N/A Seal Guides | |
| BS427 U-90 | N/A 182658 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.275 in6.99 mm | N/A 90 | N/A 4.725 in120.02 mm | N/A 0.006 in0.15 mm | N/A -427 | N/A Seal Guides | |
| BS426 U-70 | N/A 182659 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.275 in6.99 mm | N/A 70 | N/A 4.600 in116.84 mm | N/A 0.006 in0.15 mm | N/A -426 | N/A Seal Guides | |
| BS426 U-90 | N/A 182660 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.275 in6.99 mm | N/A 90 | N/A 4.600 in116.84 mm | N/A 0.006 in0.15 mm | N/A -426 | N/A Seal Guides | |
| BS425 U-70 | N/A 182661 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.275 in6.99 mm | N/A 70 | N/A 4.475 in113.67 mm | N/A 0.006 in0.15 mm | N/A -425 | N/A Seal Guides | |
| BS425 U-90 | N/A 182662 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.275 in6.99 mm | N/A 90 | N/A 4.475 in113.67 mm | N/A 0.006 in0.15 mm | N/A -425 | N/A Seal Guides | |
| BS395 U-70 | N/A 182663 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.210 in5.33 mm | N/A 70 | N/A 25.940 in658.88 mm | N/A 0.005 in0.13 mm | N/A -395 | N/A Seal Guides | |
| BS395 U-90 | N/A 182664 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.210 in5.33 mm | N/A 90 | N/A 25.940 in658.88 mm | N/A 0.005 in0.13 mm | N/A -395 | N/A Seal Guides | |
| BS394 U-70 | N/A 182665 | N/A BS Standard O-Ring | N/A Polyurethane | N/A 0.210 in5.33 mm | N/A 70 | N/A 24.940 in633.48 mm | N/A 0.005 in0.13 mm | N/A -394 | N/A Seal Guides | 
