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.
Cross Section Width (in)
Cross Section Width (mm)
Durometer
Inside Diameter (in)
Inside Diameter (mm)
| Item # | IntegrationID | Type | Material | Cross Section Width | Durometer | Inside Diameter | CSW Tolerance | BS Number | Product Guides | 
|---|---|---|---|---|---|---|---|---|---|
| BS254 U-70 | IntegrationID                                                    
 N/A 182891 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 5.484 in139.29 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -254 | Product Guides N/A Seal Guides | 
| BS254 U-90 | IntegrationID                                                    
 N/A 182892 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 90 | Inside Diameter N/A 5.484 in139.29 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -254 | Product Guides N/A Seal Guides | 
| BS253 U-70 | IntegrationID                                                    
 N/A 182893 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 5.359 in136.12 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -253 | Product Guides N/A Seal Guides | 
| BS253 U-90 | IntegrationID                                                    
 N/A 182894 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 90 | Inside Diameter N/A 5.359 in136.12 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -253 | Product Guides N/A Seal Guides | 
| BS252 U-70 | IntegrationID                                                    
 N/A 182895 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 5.234 in132.94 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -252 | Product Guides N/A Seal Guides | 
| BS252 U-90 | IntegrationID                                                    
 N/A 182896 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 90 | Inside Diameter N/A 5.234 in132.94 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -252 | Product Guides N/A Seal Guides | 
| BS251 U-70 | IntegrationID                                                    
 N/A 182897 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 5.109 in129.77 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -251 | Product Guides N/A Seal Guides | 
| BS251 U-90 | IntegrationID                                                    
 N/A 182898 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 90 | Inside Diameter N/A 5.109 in129.77 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -251 | Product Guides N/A Seal Guides | 
| BS250 U-70 | IntegrationID                                                    
 N/A 182899 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 4.984 in126.59 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -250 | Product Guides N/A Seal Guides | 
| BS250 U-90 | IntegrationID                                                    
 N/A 182900 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 90 | Inside Diameter N/A 4.984 in126.59 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -250 | Product Guides N/A Seal Guides | 
| BS249 U-70 | IntegrationID                                                    
 N/A 182901 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 4.859 in123.42 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -249 | Product Guides N/A Seal Guides | 
| BS249 U-90 | IntegrationID                                                    
 N/A 182902 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 90 | Inside Diameter N/A 4.859 in123.42 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -249 | Product Guides N/A Seal Guides | 
| BS248 U-70 | IntegrationID                                                    
 N/A 182903 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 4.734 in120.24 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -248 | Product Guides N/A Seal Guides | 
| BS248 U-90 | IntegrationID                                                    
 N/A 182904 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 90 | Inside Diameter N/A 4.734 in120.24 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -248 | Product Guides N/A Seal Guides | 
| BS247 U-70 | IntegrationID                                                    
 N/A 182905 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 4.609 in117.07 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -247 | Product Guides N/A Seal Guides | 
| BS247 U-90 | IntegrationID                                                    
 N/A 182906 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 90 | Inside Diameter N/A 4.609 in117.07 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -247 | Product Guides N/A Seal Guides | 
| BS246 U-70 | IntegrationID                                                    
 N/A 182907 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 4.484 in113.89 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -246 | Product Guides N/A Seal Guides | 
| BS246 U-90 | IntegrationID                                                    
 N/A 182908 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 90 | Inside Diameter N/A 4.484 in113.89 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -246 | Product Guides N/A Seal Guides | 
| BS245 U-70 | IntegrationID                                                    
 N/A 182909 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 4.359 in110.72 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -245 | Product Guides N/A Seal Guides | 
| BS245 U-90 | IntegrationID                                                    
 N/A 182910 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 90 | Inside Diameter N/A 4.359 in110.72 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -245 | Product Guides N/A Seal Guides | 
| BS244 U-70 | IntegrationID                                                    
 N/A 182911 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 4.234 in107.54 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -244 | Product Guides N/A Seal Guides | 
| BS244 U-90 | IntegrationID                                                    
 N/A 182912 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 90 | Inside Diameter N/A 4.234 in107.54 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -244 | Product Guides N/A Seal Guides | 
| BS243 U-70 | IntegrationID                                                    
 N/A 182913 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 4.109 in104.37 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -243 | Product Guides N/A Seal Guides | 
| BS243 U-90 | IntegrationID                                                    
 N/A 182914 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 90 | Inside Diameter N/A 4.109 in104.37 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -243 | Product Guides N/A Seal Guides | 
| BS242 U-70 | IntegrationID                                                    
 N/A 182915 | Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 3.984 in101.19 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -242 | Product Guides N/A Seal Guides | 
 
 

