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 | 
|---|---|---|---|---|---|---|---|---|
| 77x2.00B70 | IntegrationID                                                    
 N/A 118179 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 2.00 mm | Durometer N/A 70 | Inside Diameter N/A 77.00 mm | Product Guides N/A Seal Guides | 
| 77 X 2 B-90 | IntegrationID                                                    
 N/A 118180 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 2.00 mm | Durometer N/A 90 | Inside Diameter N/A 77.00 mm | Product Guides N/A Seal Guides | 
| 78x2.00B70 | IntegrationID                                                    
 N/A 118181 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 2.00 mm | Durometer N/A 70 | Inside Diameter N/A 78.00 mm | Product Guides N/A Seal Guides | 
| 78 X 2 B-90 | IntegrationID                                                    
 N/A 118182 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 2.00 mm | Durometer N/A 90 | Inside Diameter N/A 78.00 mm | Product Guides N/A Seal Guides | 
| 79x2.00B70 | IntegrationID                                                    
 N/A 118183 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 2.00 mm | Durometer N/A 70 | Inside Diameter N/A 79.00 mm | Product Guides N/A Seal Guides | 
| 79 X 2 B-90 | IntegrationID                                                    
 N/A 118184 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 2.00 mm | Durometer N/A 90 | Inside Diameter N/A 79.00 mm | Product Guides N/A Seal Guides | 
| 79.5x3.00B70 | IntegrationID                                                    
 N/A 118185 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A S80 | Cross Section Width N/A 2.00 mm | Durometer N/A 70 | Inside Diameter N/A 79.50 mm | Product Guides N/A Seal Guides | 
| 79.5 X 2 B-90 | IntegrationID                                                    
 N/A 118186 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A S80 | Cross Section Width N/A 2.00 mm | Durometer N/A 90 | Inside Diameter N/A 79.50 mm | Product Guides N/A Seal Guides | 
| 80x2.00B70 | IntegrationID                                                    
 N/A 118187 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 2.00 mm | Durometer N/A 70 | Inside Diameter N/A 80.00 mm | Product Guides N/A Seal Guides | 
| 80 X 2 B-90 | IntegrationID                                                    
 N/A 118188 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 2.00 mm | Durometer N/A 90 | Inside Diameter N/A 80.00 mm | Product Guides N/A Seal Guides | 
| 81x2.00B70 | IntegrationID                                                    
 N/A 118189 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 2.00 mm | Durometer N/A 70 | Inside Diameter N/A 81.00 mm | Product Guides N/A Seal Guides | 
| 81 X 2 B-90 | IntegrationID                                                    
 N/A 118190 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 2.00 mm | Durometer N/A 90 | Inside Diameter N/A 81.00 mm | Product Guides N/A Seal Guides | 
| 82x2.00B70 | IntegrationID                                                    
 N/A 118191 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 2.00 mm | Durometer N/A 70 | Inside Diameter N/A 82.00 mm | Product Guides N/A Seal Guides | 
| 82 X 2 B-90 | IntegrationID                                                    
 N/A 118192 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 2.00 mm | Durometer N/A 90 | Inside Diameter N/A 82.00 mm | Product Guides N/A Seal Guides | 
| 83x2.00B70 | IntegrationID                                                    
 N/A 118193 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 2.00 mm | Durometer N/A 70 | Inside Diameter N/A 83.00 mm | Product Guides N/A Seal Guides | 
| 83 X 2 B-90 | IntegrationID                                                    
 N/A 118194 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 2.00 mm | Durometer N/A 90 | Inside Diameter N/A 83.00 mm | Product Guides N/A Seal Guides | 
| 84x2.00B70 | IntegrationID                                                    
 N/A 118195 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 2.00 mm | Durometer N/A 70 | Inside Diameter N/A 84.00 mm | Product Guides N/A Seal Guides | 
| 84 X 2 B-90 | IntegrationID                                                    
 N/A 118196 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 2.00 mm | Durometer N/A 90 | Inside Diameter N/A 84.00 mm | Product Guides N/A Seal Guides | 
| 84.5x3.00B70 | IntegrationID                                                    
 N/A 118197 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A S85 | Cross Section Width N/A 2.00 mm | Durometer N/A 70 | Inside Diameter N/A 84.50 mm | Product Guides N/A Seal Guides | 
| 84.5 X 2 B-90 | IntegrationID                                                    
 N/A 118198 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A S85 | Cross Section Width N/A 2.00 mm | Durometer N/A 90 | Inside Diameter N/A 84.50 mm | Product Guides N/A Seal Guides | 
| 85x2.00B70 | IntegrationID                                                    
 N/A 118199 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 2.00 mm | Durometer N/A 70 | Inside Diameter N/A 85.00 mm | Product Guides N/A Seal Guides | 
| 85 X 2 B-90 | IntegrationID                                                    
 N/A 118200 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 2.00 mm | Durometer N/A 90 | Inside Diameter N/A 85.00 mm | Product Guides N/A Seal Guides | 
| 86x2.00B70 | IntegrationID                                                    
 N/A 118201 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 2.00 mm | Durometer N/A 70 | Inside Diameter N/A 86.00 mm | Product Guides N/A Seal Guides | 
| 86 X 2 B-90 | IntegrationID                                                    
 N/A 118202 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 2.00 mm | Durometer N/A 90 | Inside Diameter N/A 86.00 mm | Product Guides N/A Seal Guides | 
| 87x2.00B70 | IntegrationID                                                    
 N/A 118203 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 2.00 mm | Durometer N/A 70 | Inside Diameter N/A 87.00 mm | Product Guides N/A Seal Guides | 
 
 

