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 |
|---|---|---|---|---|---|---|---|---|
| 335.9 X 6.99 B-70 |
IntegrationID
N/A 124761 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A BS650 | Cross Section Width N/A 6.99 mm | Durometer N/A 70 | Inside Diameter N/A 335.90 mm | Product Guides N/A Seal Guides |
| 335.9 X 6.99 B-90 |
IntegrationID
N/A 124762 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A BS650 | Cross Section Width N/A 6.99 mm | Durometer N/A 90 | Inside Diameter N/A 335.90 mm | Product Guides N/A Seal Guides |
| 342.27 X 6.99 B-70 |
IntegrationID
N/A 124763 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 456 | Cross Section Width N/A 6.99 mm | Durometer N/A 70 | Inside Diameter N/A 342.27 mm | Product Guides N/A Seal Guides |
| 342.27 X 6.99 B-90 |
IntegrationID
N/A 124764 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 456 | Cross Section Width N/A 6.99 mm | Durometer N/A 90 | Inside Diameter N/A 342.27 mm | Product Guides N/A Seal Guides |
| 354.97 X 6.99 B-70 |
IntegrationID
N/A 124765 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 457 | Cross Section Width N/A 6.99 mm | Durometer N/A 70 | Inside Diameter N/A 354.97 mm | Product Guides N/A Seal Guides |
| 354.97 X 6.99 B-90 |
IntegrationID
N/A 124766 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 457 | Cross Section Width N/A 6.99 mm | Durometer N/A 90 | Inside Diameter N/A 354.97 mm | Product Guides N/A Seal Guides |
| 367.67 X 6.99 B-70 |
IntegrationID
N/A 124767 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 458 | Cross Section Width N/A 6.99 mm | Durometer N/A 70 | Inside Diameter N/A 367.67 mm | Product Guides N/A Seal Guides |
| 367.67 X 6.99 B-90 |
IntegrationID
N/A 124768 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 458 | Cross Section Width N/A 6.99 mm | Durometer N/A 90 | Inside Diameter N/A 367.67 mm | Product Guides N/A Seal Guides |
| 380.37 X 6.99 B-70 |
IntegrationID
N/A 124769 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 459 | Cross Section Width N/A 6.99 mm | Durometer N/A 70 | Inside Diameter N/A 380.37 mm | Product Guides N/A Seal Guides |
| 380.37 X 6.99 B-90 |
IntegrationID
N/A 124770 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 459 | Cross Section Width N/A 6.99 mm | Durometer N/A 90 | Inside Diameter N/A 380.37 mm | Product Guides N/A Seal Guides |
| 393.07 X 6.99 B-70 |
IntegrationID
N/A 124771 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 460 | Cross Section Width N/A 6.99 mm | Durometer N/A 70 | Inside Diameter N/A 393.07 mm | Product Guides N/A Seal Guides |
| 393.07 X 6.99 B-90 |
IntegrationID
N/A 124772 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 460 | Cross Section Width N/A 6.99 mm | Durometer N/A 90 | Inside Diameter N/A 393.07 mm | Product Guides N/A Seal Guides |
| 405.26 X 6.99 B-70 |
IntegrationID
N/A 124773 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 461 | Cross Section Width N/A 6.99 mm | Durometer N/A 70 | Inside Diameter N/A 405.26 mm | Product Guides N/A Seal Guides |
| 405.26 X 6.99 B-90 |
IntegrationID
N/A 124774 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 461 | Cross Section Width N/A 6.99 mm | Durometer N/A 90 | Inside Diameter N/A 405.26 mm | Product Guides N/A Seal Guides |
| 417.96 X 6.99 B-70 |
IntegrationID
N/A 124775 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 462 | Cross Section Width N/A 6.99 mm | Durometer N/A 70 | Inside Diameter N/A 417.96 mm | Product Guides N/A Seal Guides |
| 417.96 X 6.99 B-90 |
IntegrationID
N/A 124776 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 462 | Cross Section Width N/A 6.99 mm | Durometer N/A 90 | Inside Diameter N/A 417.96 mm | Product Guides N/A Seal Guides |
| 430.66 X 6.99 B-70 |
IntegrationID
N/A 124777 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 463 | Cross Section Width N/A 6.99 mm | Durometer N/A 70 | Inside Diameter N/A 430.66 mm | Product Guides N/A Seal Guides |
| 430.66 X 6.99 B-90 |
IntegrationID
N/A 124778 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 463 | Cross Section Width N/A 6.99 mm | Durometer N/A 90 | Inside Diameter N/A 430.66 mm | Product Guides N/A Seal Guides |
| 443.36 X 6.99 B-70 |
IntegrationID
N/A 124779 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 464 | Cross Section Width N/A 6.99 mm | Durometer N/A 70 | Inside Diameter N/A 443.36 mm | Product Guides N/A Seal Guides |
| 443.36 X 6.99 B-90 |
IntegrationID
N/A 124780 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 464 | Cross Section Width N/A 6.99 mm | Durometer N/A 90 | Inside Diameter N/A 443.36 mm | Product Guides N/A Seal Guides |
| 456.06 X 6.99 B-70 |
IntegrationID
N/A 124781 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 465 | Cross Section Width N/A 6.99 mm | Durometer N/A 70 | Inside Diameter N/A 456.06 mm | Product Guides N/A Seal Guides |
| 456.06 X 6.99 B-90 |
IntegrationID
N/A 124782 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 465 | Cross Section Width N/A 6.99 mm | Durometer N/A 90 | Inside Diameter N/A 456.06 mm | Product Guides N/A Seal Guides |
| 468.76 X 6.99 B-70 |
IntegrationID
N/A 124783 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 466 | Cross Section Width N/A 6.99 mm | Durometer N/A 70 | Inside Diameter N/A 468.76 mm | Product Guides N/A Seal Guides |
| 468.76 X 6.99 B-90 |
IntegrationID
N/A 124784 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 466 | Cross Section Width N/A 6.99 mm | Durometer N/A 90 | Inside Diameter N/A 468.76 mm | Product Guides N/A Seal Guides |
| 481.46 X 6.99 B-70 |
IntegrationID
N/A 124785 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 467 | Cross Section Width N/A 6.99 mm | Durometer N/A 70 | Inside Diameter N/A 481.46 mm | Product Guides N/A Seal Guides |

