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 |
|---|---|---|---|---|---|---|---|---|
| 238x6.00B70 |
IntegrationID
N/A 124405 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 70 | Inside Diameter N/A 238.00 mm | Product Guides N/A Seal Guides |
| 238 X 6 B-90 |
IntegrationID
N/A 124406 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 90 | Inside Diameter N/A 238.00 mm | Product Guides N/A Seal Guides |
| 240x6.00B70 |
IntegrationID
N/A 124407 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 70 | Inside Diameter N/A 240.00 mm | Product Guides N/A Seal Guides |
| 240 X 6 B-90 |
IntegrationID
N/A 124408 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 90 | Inside Diameter N/A 240.00 mm | Product Guides N/A Seal Guides |
| 242x6.00B70 |
IntegrationID
N/A 124409 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 70 | Inside Diameter N/A 242.00 mm | Product Guides N/A Seal Guides |
| 242 X 6 B-90 |
IntegrationID
N/A 124410 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 90 | Inside Diameter N/A 242.00 mm | Product Guides N/A Seal Guides |
| 244x6.00B70 |
IntegrationID
N/A 124411 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 70 | Inside Diameter N/A 244.00 mm | Product Guides N/A Seal Guides |
| 244 X 6 B-90 |
IntegrationID
N/A 124412 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 90 | Inside Diameter N/A 244.00 mm | Product Guides N/A Seal Guides |
| 247 X 6 B-70 |
IntegrationID
N/A 124413 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 70 | Inside Diameter N/A 247.00 mm | Product Guides N/A Seal Guides |
| 247 X 6 B-90 |
IntegrationID
N/A 124414 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 90 | Inside Diameter N/A 247.00 mm | Product Guides N/A Seal Guides |
| 249 X 6 B-70 |
IntegrationID
N/A 124415 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 70 | Inside Diameter N/A 249.00 mm | Product Guides N/A Seal Guides |
| 249 X 6 B-90 |
IntegrationID
N/A 124416 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 90 | Inside Diameter N/A 249.00 mm | Product Guides N/A Seal Guides |
| 250x6.00B70 |
IntegrationID
N/A 124417 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 70 | Inside Diameter N/A 250.00 mm | Product Guides N/A Seal Guides |
| 250 X 6 B-90 |
IntegrationID
N/A 124418 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 90 | Inside Diameter N/A 250.00 mm | Product Guides N/A Seal Guides |
| 258x6.00B70 |
IntegrationID
N/A 124419 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 70 | Inside Diameter N/A 258.00 mm | Product Guides N/A Seal Guides |
| 258 X 6 B-90 |
IntegrationID
N/A 124420 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 90 | Inside Diameter N/A 258.00 mm | Product Guides N/A Seal Guides |
| 259 X 6 B-70 |
IntegrationID
N/A 124421 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 70 | Inside Diameter N/A 259.00 mm | Product Guides N/A Seal Guides |
| 259 X 6 B-90 |
IntegrationID
N/A 124422 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 90 | Inside Diameter N/A 259.00 mm | Product Guides N/A Seal Guides |
| 260x6.00B70 |
IntegrationID
N/A 124423 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 70 | Inside Diameter N/A 260.00 mm | Product Guides N/A Seal Guides |
| 260 X 6 B-90 |
IntegrationID
N/A 124424 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 90 | Inside Diameter N/A 260.00 mm | Product Guides N/A Seal Guides |
| 262 X 6 B-70 |
IntegrationID
N/A 124425 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 70 | Inside Diameter N/A 262.00 mm | Product Guides N/A Seal Guides |
| 262 X 6 B-90 |
IntegrationID
N/A 124426 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 90 | Inside Diameter N/A 262.00 mm | Product Guides N/A Seal Guides |
| 265x6.00B70 |
IntegrationID
N/A 124427 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 70 | Inside Diameter N/A 265.00 mm | Product Guides N/A Seal Guides |
| 265 X 6 B-90 |
IntegrationID
N/A 124428 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 90 | Inside Diameter N/A 265.00 mm | Product Guides N/A Seal Guides |
| 266x6.00B70 |
IntegrationID
N/A 124429 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 6.00 mm | Durometer N/A 70 | Inside Diameter N/A 266.00 mm | Product Guides N/A Seal Guides |

