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 | 
                                                        
|---|---|---|---|---|---|---|---|---|---|
| BS145 U-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183066  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 90 | Inside Diameter N/A 2.550 in64.77 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -145 | Product Guides N/A Seal Guides | 
| BS144 U-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183067  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 2.487 in63.17 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -144 | Product Guides N/A Seal Guides | 
| BS144 U-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183068  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 90 | Inside Diameter N/A 2.487 in63.17 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -144 | Product Guides N/A Seal Guides | 
| BS143 U-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183069  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 2.425 in61.60 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -143 | Product Guides N/A Seal Guides | 
| BS143 U-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183070  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 90 | Inside Diameter N/A 2.425 in61.60 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -143 | Product Guides N/A Seal Guides | 
| BS142 U-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183071  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 2.362 in59.99 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -142 | Product Guides N/A Seal Guides | 
| BS142 U-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183072  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 90 | Inside Diameter N/A 2.362 in59.99 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -142 | Product Guides N/A Seal Guides | 
| BS141 U-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183073  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 2.300 in58.42 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -141 | Product Guides N/A Seal Guides | 
| BS141 U-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183074  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 90 | Inside Diameter N/A 2.300 in58.42 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -141 | Product Guides N/A Seal Guides | 
| BS140 U-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183075  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 2.237 in56.82 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -140 | Product Guides N/A Seal Guides | 
| BS140 U-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183076  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 90 | Inside Diameter N/A 2.237 in56.82 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -140 | Product Guides N/A Seal Guides | 
| BS139 U-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183077  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 2.175 in55.25 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -139 | Product Guides N/A Seal Guides | 
| BS139 U-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183078  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 90 | Inside Diameter N/A 2.175 in55.25 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -139 | Product Guides N/A Seal Guides | 
| BS138 U-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183079  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 2.112 in53.64 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -138 | Product Guides N/A Seal Guides | 
| BS138 U-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183080  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 90 | Inside Diameter N/A 2.112 in53.64 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -138 | Product Guides N/A Seal Guides | 
| BS137 U-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183081  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 2.050 in52.07 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -137 | Product Guides N/A Seal Guides | 
| BS137 U-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183082  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 90 | Inside Diameter N/A 2.050 in52.07 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -137 | Product Guides N/A Seal Guides | 
| BS136 U-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183083  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 1.987 in50.47 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -136 | Product Guides N/A Seal Guides | 
| BS136 U-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183084  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 90 | Inside Diameter N/A 1.987 in50.47 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -136 | Product Guides N/A Seal Guides | 
| BS135 U-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183085  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 1.925 in48.90 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -135 | Product Guides N/A Seal Guides | 
| BS135 U-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183086  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 90 | Inside Diameter N/A 1.925 in48.90 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -135 | Product Guides N/A Seal Guides | 
| BS134 U-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183087  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 1.862 in47.29 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -134 | Product Guides N/A Seal Guides | 
| BS134 U-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183088  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 90 | Inside Diameter N/A 1.862 in47.29 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -134 | Product Guides N/A Seal Guides | 
| BS133 U-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183089  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 1.799 in45.69 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -133 | Product Guides N/A Seal Guides | 
| BS133 U-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         183090  | 
                                Type N/A BS Standard O-Ring | Material N/A Polyurethane | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 90 | Inside Diameter N/A 1.799 in45.69 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -133 | Product Guides N/A Seal Guides |