OneMonroe’s Metric Buna O-Rings are engineered to provide reliable sealing performance across a variety of industrial and commercial applications. Made from high-quality Buna-N (Nitrile) rubber, these O-rings are known for their excellent resistance to oils, fuels, and other petroleum-based products, making them ideal for use in environments where durable, leak-proof seals are essential. Buna-N’s resilient properties allow it to maintain its integrity even in challenging temperatures, ranging from -40°F to 250°F, ensuring these O-rings can withstand both low and high-stress conditions with ease. With a broad range of metric sizes available, OneMonroe ensures you’ll find the right fit for your exact specifications.
Our Metric Buna O-Rings are crafted to offer outstanding resistance to abrasion and tearing, providing long-lasting performance in rigorous applications. This makes them well-suited for automotive, aerospace, marine, and hydraulic systems, as well as in general maintenance and repair settings. The unique chemical composition of Buna-N allows these O-rings to endure pressure and friction over extended periods without compromising their sealing capabilities, making them a reliable choice for static and dynamic sealing tasks. Each O-ring is manufactured to precise industry standards, ensuring a dependable fit and function in every installation.
With OneMonroe, you’re getting more than just a product; you’re receiving a commitment to quality and expertise. Our team is dedicated to supporting your projects with high-quality metric Buna O-Rings that meet both industry standards and specific customer requirements. We provide technical support to help you select the best O-ring for your application, offering detailed product specifications and guidance. Trust OneMonroe to deliver durable, efficient, and cost-effective sealing solutions tailored to meet the demands of your unique projects.
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 Reference | 
                        
                            Cross Section Width | 
                        
                            Durometer | 
                        
                            Inside Diameter | 
                        
                            Product Guides | 
                                                        
|---|---|---|---|---|---|---|---|---|
| 197 X 3 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119716  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 90 | Inside Diameter N/A 197.00 mm | Product Guides N/A Seal Guides | 
| 198 X 3 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119717  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 70 | Inside Diameter N/A 198.00 mm | Product Guides N/A Seal Guides | 
| 198 X 3 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119718  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 90 | Inside Diameter N/A 198.00 mm | Product Guides N/A Seal Guides | 
| 199 X 3 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119719  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 70 | Inside Diameter N/A 199.00 mm | Product Guides N/A Seal Guides | 
| 199 X 3 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119720  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 90 | Inside Diameter N/A 199.00 mm | Product Guides N/A Seal Guides | 
| 199.5 X 3 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119721  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 70 | Inside Diameter N/A 199.50 mm | Product Guides N/A Seal Guides | 
| 199.5 X 3 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119722  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 90 | Inside Diameter N/A 199.50 mm | Product Guides N/A Seal Guides | 
| 200 X 3 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119723  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 70 | Inside Diameter N/A 200.00 mm | Product Guides N/A Seal Guides | 
| 200 X 3 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119724  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 90 | Inside Diameter N/A 200.00 mm | Product Guides N/A Seal Guides | 
| 201 X 3 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119725  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 70 | Inside Diameter N/A 201.00 mm | Product Guides N/A Seal Guides | 
| 201 X 3 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119726  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 90 | Inside Diameter N/A 201.00 mm | Product Guides N/A Seal Guides | 
| 202 X 3 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119727  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 70 | Inside Diameter N/A 202.00 mm | Product Guides N/A Seal Guides | 
| 202 X 3 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119728  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 90 | Inside Diameter N/A 202.00 mm | Product Guides N/A Seal Guides | 
| 203 X 3 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119729  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 70 | Inside Diameter N/A 203.00 mm | Product Guides N/A Seal Guides | 
| 203 X 3 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119730  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 90 | Inside Diameter N/A 203.00 mm | Product Guides N/A Seal Guides | 
| 204 X 3 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119731  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 70 | Inside Diameter N/A 204.00 mm | Product Guides N/A Seal Guides | 
| 204 X 3 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119732  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 90 | Inside Diameter N/A 204.00 mm | Product Guides N/A Seal Guides | 
| 204.5 X 3 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119733  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 70 | Inside Diameter N/A 204.50 mm | Product Guides N/A Seal Guides | 
| 204.5 X 3 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119734  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 90 | Inside Diameter N/A 204.50 mm | Product Guides N/A Seal Guides | 
| 205 X 3 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119735  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 70 | Inside Diameter N/A 205.00 mm | Product Guides N/A Seal Guides | 
| 205 X 3 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119736  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 90 | Inside Diameter N/A 205.00 mm | Product Guides N/A Seal Guides | 
| 206 X 3 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119737  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 70 | Inside Diameter N/A 206.00 mm | Product Guides N/A Seal Guides | 
| 206 X 3 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119738  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 90 | Inside Diameter N/A 206.00 mm | Product Guides N/A Seal Guides | 
| 207 X 3 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119739  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 70 | Inside Diameter N/A 207.00 mm | Product Guides N/A Seal Guides | 
| 207 X 3 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         119740  | 
                                Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.00 mm | Durometer N/A 90 | Inside Diameter N/A 207.00 mm | Product Guides N/A Seal Guides | 
 
