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 | 
|---|---|---|---|---|---|---|---|---|
| 14 X 1.78 B-70 | IntegrationID                                                    
 N/A 117671 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 15 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 14.00 mm | Product Guides N/A Seal Guides | 
| 14 X 1.78 B-90 | IntegrationID                                                    
 N/A 117672 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 15 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 14.00 mm | Product Guides N/A Seal Guides | 
| 15.6 X 1.78 B-70 | IntegrationID                                                    
 N/A 117673 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 16 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 15.60 mm | Product Guides N/A Seal Guides | 
| 15.6 X 1.78 B-90 | IntegrationID                                                    
 N/A 117674 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 16 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 15.60 mm | Product Guides N/A Seal Guides | 
| 17.17 X 1.78 B-70 | IntegrationID                                                    
 N/A 117675 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 17 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 17.17 mm | Product Guides N/A Seal Guides | 
| 17.17 X 1.78 B-90 | IntegrationID                                                    
 N/A 117676 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 17 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 17.17 mm | Product Guides N/A Seal Guides | 
| 18.77 X 1.78 B-70 | IntegrationID                                                    
 N/A 117677 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 18 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 18.77 mm | Product Guides N/A Seal Guides | 
| 18.77 X 1.78 B-90 | IntegrationID                                                    
 N/A 117678 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 18 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 18.77 mm | Product Guides N/A Seal Guides | 
| 19.05 X 1.78 B-70 | IntegrationID                                                    
 N/A 117679 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 19.05 mm | Product Guides N/A Seal Guides | 
| 19.05 X 1.78 B-90 | IntegrationID                                                    
 N/A 117680 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 19.05 mm | Product Guides N/A Seal Guides | 
| 19.15 X 1.78 B-70 | IntegrationID                                                    
 N/A 117681 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 19.15 mm | Product Guides N/A Seal Guides | 
| 19.15 X 1.78 B-90 | IntegrationID                                                    
 N/A 117682 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 19.15 mm | Product Guides N/A Seal Guides | 
| 20.35 X 1.78 B-70 | IntegrationID                                                    
 N/A 117683 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 19 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 20.35 mm | Product Guides N/A Seal Guides | 
| 20.35 X 1.78 B-90 | IntegrationID                                                    
 N/A 117684 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 19 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 20.35 mm | Product Guides N/A Seal Guides | 
| 21.47 X 1.78 B-70 | IntegrationID                                                    
 N/A 117685 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 21.47 mm | Product Guides N/A Seal Guides | 
| 21.47 X 1.78 B-90 | IntegrationID                                                    
 N/A 117686 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 21.47 mm | Product Guides N/A Seal Guides | 
| 21.95 X 1.78 B-70 | IntegrationID                                                    
 N/A 117687 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 20 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 21.95 mm | Product Guides N/A Seal Guides | 
| 21.95 X 1.78 B-90 | IntegrationID                                                    
 N/A 117688 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 20 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 21.95 mm | Product Guides N/A Seal Guides | 
| 23.52 X 1.78 B-70 | IntegrationID                                                    
 N/A 117689 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 21 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 23.52 mm | Product Guides N/A Seal Guides | 
| 23.52 X 1.78 B-90 | IntegrationID                                                    
 N/A 117690 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 21 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 23.52 mm | Product Guides N/A Seal Guides | 
| 25.12 X 1.78 B-70 | IntegrationID                                                    
 N/A 117691 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 22 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 25.12 mm | Product Guides N/A Seal Guides | 
| 25.12 X 1.78 B-90 | IntegrationID                                                    
 N/A 117692 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 22 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 25.12 mm | Product Guides N/A Seal Guides | 
| 26.7 X 1.78 B-70 | IntegrationID                                                    
 N/A 117693 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 23 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 26.70 mm | Product Guides N/A Seal Guides | 
| 26.7 X 1.78 B-90 | IntegrationID                                                    
 N/A 117694 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 23 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 26.70 mm | Product Guides N/A Seal Guides | 
| 28.3 X 1.78 B-70 | IntegrationID                                                    
 N/A 117695 | Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 24 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 28.30 mm | Product Guides N/A Seal Guides | 
 
 

