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 |
|---|---|---|---|---|---|---|---|---|
| 315 X 10 B-90 |
IntegrationID
N/A 125186 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 10.00 mm | Durometer N/A 90 | Inside Diameter N/A 315.00 mm | Product Guides N/A Seal Guides |
| 325 X 10 B-70 |
IntegrationID
N/A 125187 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 10.00 mm | Durometer N/A 70 | Inside Diameter N/A 325.00 mm | Product Guides N/A Seal Guides |
| 325 X 10 B-90 |
IntegrationID
N/A 125188 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 10.00 mm | Durometer N/A 90 | Inside Diameter N/A 325.00 mm | Product Guides N/A Seal Guides |
| 330 X 10 B-70 |
IntegrationID
N/A 125189 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 10.00 mm | Durometer N/A 70 | Inside Diameter N/A 330.00 mm | Product Guides N/A Seal Guides |
| 330 X 10 B-90 |
IntegrationID
N/A 125190 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 10.00 mm | Durometer N/A 90 | Inside Diameter N/A 330.00 mm | Product Guides N/A Seal Guides |
| 340 X 10 B-70 |
IntegrationID
N/A 125191 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 10.00 mm | Durometer N/A 70 | Inside Diameter N/A 340.00 mm | Product Guides N/A Seal Guides |
| 340 X 10 B-90 |
IntegrationID
N/A 125192 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 10.00 mm | Durometer N/A 90 | Inside Diameter N/A 340.00 mm | Product Guides N/A Seal Guides |
| 360 X 10 B-70 |
IntegrationID
N/A 125193 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 10.00 mm | Durometer N/A 70 | Inside Diameter N/A 360.00 mm | Product Guides N/A Seal Guides |
| 360 X 10 B-90 |
IntegrationID
N/A 125194 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 10.00 mm | Durometer N/A 90 | Inside Diameter N/A 360.00 mm | Product Guides N/A Seal Guides |
| 380 X 10 B-70 |
IntegrationID
N/A 125195 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 10.00 mm | Durometer N/A 70 | Inside Diameter N/A 380.00 mm | Product Guides N/A Seal Guides |
| 380 X 10 B-90 |
IntegrationID
N/A 125196 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 10.00 mm | Durometer N/A 90 | Inside Diameter N/A 380.00 mm | Product Guides N/A Seal Guides |
| 450 X 10 B-70 |
IntegrationID
N/A 125197 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 10.00 mm | Durometer N/A 70 | Inside Diameter N/A 450.00 mm | Product Guides N/A Seal Guides |
| 450 X 10 B-90 |
IntegrationID
N/A 125198 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 10.00 mm | Durometer N/A 90 | Inside Diameter N/A 450.00 mm | Product Guides N/A Seal Guides |
| 475 X 10 B-70 |
IntegrationID
N/A 125199 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A V480 | Cross Section Width N/A 10.00 mm | Durometer N/A 70 | Inside Diameter N/A 475.00 mm | Product Guides N/A Seal Guides |
| 475 X 10 B-90 |
IntegrationID
N/A 125200 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A V480 | Cross Section Width N/A 10.00 mm | Durometer N/A 90 | Inside Diameter N/A 475.00 mm | Product Guides N/A Seal Guides |
| 524.5 X 10 B-70 |
IntegrationID
N/A 125201 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A V530 | Cross Section Width N/A 10.00 mm | Durometer N/A 70 | Inside Diameter N/A 524.50 mm | Product Guides N/A Seal Guides |
| 524.5 X 10 B-90 |
IntegrationID
N/A 125202 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A V530 | Cross Section Width N/A 10.00 mm | Durometer N/A 90 | Inside Diameter N/A 524.50 mm | Product Guides N/A Seal Guides |
| 579 X 10 B-70 |
IntegrationID
N/A 125203 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A V585 | Cross Section Width N/A 10.00 mm | Durometer N/A 70 | Inside Diameter N/A 579.00 mm | Product Guides N/A Seal Guides |
| 579 X 10 B-90 |
IntegrationID
N/A 125204 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A V585 | Cross Section Width N/A 10.00 mm | Durometer N/A 90 | Inside Diameter N/A 579.00 mm | Product Guides N/A Seal Guides |
| 633.5 X 10 B-70 |
IntegrationID
N/A 125205 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A V640 | Cross Section Width N/A 10.00 mm | Durometer N/A 70 | Inside Diameter N/A 633.50 mm | Product Guides N/A Seal Guides |
| 633.5 X 10 B-90 |
IntegrationID
N/A 125206 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A V640 | Cross Section Width N/A 10.00 mm | Durometer N/A 90 | Inside Diameter N/A 633.50 mm | Product Guides N/A Seal Guides |
| 683 X 10 B-70 |
IntegrationID
N/A 125207 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A V690 | Cross Section Width N/A 10.00 mm | Durometer N/A 70 | Inside Diameter N/A 683.00 mm | Product Guides N/A Seal Guides |
| 683 X 10 B-90 |
IntegrationID
N/A 125208 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A V690 | Cross Section Width N/A 10.00 mm | Durometer N/A 90 | Inside Diameter N/A 683.00 mm | Product Guides N/A Seal Guides |
| 700 X 10 B-70 |
IntegrationID
N/A 125209 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 10.00 mm | Durometer N/A 70 | Inside Diameter N/A 700.00 mm | Product Guides N/A Seal Guides |
| 700 X 10 B-90 |
IntegrationID
N/A 125210 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 10.00 mm | Durometer N/A 90 | Inside Diameter N/A 700.00 mm | Product Guides N/A Seal Guides |

