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 |
---|---|---|---|---|---|---|---|
227 X 4.5 B-90 |
IntegrationID
N/A 122526 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 90 | Inside Diameter N/A 227.00 mm |
250 X 4.5 B-70 |
IntegrationID
N/A 122527 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 70 | Inside Diameter N/A 250.00 mm |
250 X 4.5 B-90 |
IntegrationID
N/A 122528 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 90 | Inside Diameter N/A 250.00 mm |
267 X 4.5 B-70 |
IntegrationID
N/A 122529 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 70 | Inside Diameter N/A 267.00 mm |
267 X 4.5 B-90 |
IntegrationID
N/A 122530 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 90 | Inside Diameter N/A 267.00 mm |
280 X 4.5 B-70 |
IntegrationID
N/A 122531 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 70 | Inside Diameter N/A 280.00 mm |
280 X 4.5 B-90 |
IntegrationID
N/A 122532 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 90 | Inside Diameter N/A 280.00 mm |
315 X 4.5 B-70 |
IntegrationID
N/A 122533 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 70 | Inside Diameter N/A 315.00 mm |
315 X 4.5 B-90 |
IntegrationID
N/A 122534 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 90 | Inside Diameter N/A 315.00 mm |
7.93 X 4.76 B-70 |
IntegrationID
N/A 122535 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.76 mm | Durometer N/A 70 | Inside Diameter N/A 7.93 mm |
7.93 X 4.76 B-90 |
IntegrationID
N/A 122536 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.76 mm | Durometer N/A 90 | Inside Diameter N/A 7.93 mm |
4x5.00B70 |
IntegrationID
N/A 122537 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 5.00 mm | Durometer N/A 70 | Inside Diameter N/A 4.00 mm |
4 X 5 B-90 |
IntegrationID
N/A 122538 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 5.00 mm | Durometer N/A 90 | Inside Diameter N/A 4.00 mm |
5x5.00B70 |
IntegrationID
N/A 122539 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 5.00 mm | Durometer N/A 70 | Inside Diameter N/A 5.00 mm |
5 X 5 B-90 |
IntegrationID
N/A 122540 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 5.00 mm | Durometer N/A 90 | Inside Diameter N/A 5.00 mm |
6x5.00B70 |
IntegrationID
N/A 122541 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 5.00 mm | Durometer N/A 70 | Inside Diameter N/A 6.00 mm |
6 X 5 B-90 |
IntegrationID
N/A 122542 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 5.00 mm | Durometer N/A 90 | Inside Diameter N/A 6.00 mm |
7x5.00B70 |
IntegrationID
N/A 122543 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 5.00 mm | Durometer N/A 70 | Inside Diameter N/A 7.00 mm |
7 X 5 B-90 |
IntegrationID
N/A 122544 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 5.00 mm | Durometer N/A 90 | Inside Diameter N/A 7.00 mm |
8x5.00B70 |
IntegrationID
N/A 122545 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 5.00 mm | Durometer N/A 70 | Inside Diameter N/A 8.00 mm |
8 X 5 B-90 |
IntegrationID
N/A 122546 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 5.00 mm | Durometer N/A 90 | Inside Diameter N/A 8.00 mm |
9x5.00B70 |
IntegrationID
N/A 122547 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 5.00 mm | Durometer N/A 70 | Inside Diameter N/A 9.00 mm |
9 X 5 B-90 |
IntegrationID
N/A 122548 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 5.00 mm | Durometer N/A 90 | Inside Diameter N/A 9.00 mm |
10x5.00B70 |
IntegrationID
N/A 122549 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 5.00 mm | Durometer N/A 70 | Inside Diameter N/A 10.00 mm |
10 X 5 B-90 |
IntegrationID
N/A 122550 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 5.00 mm | Durometer N/A 90 | Inside Diameter N/A 10.00 mm |