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 |
---|---|---|---|---|---|---|---|
478 X 4 B-90 |
IntegrationID
N/A 122224 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 90 | Inside Diameter N/A 478.00 mm |
479 X 4 B-70 |
IntegrationID
N/A 122225 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 70 | Inside Diameter N/A 479.00 mm |
479 X 4 B-90 |
IntegrationID
N/A 122226 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 90 | Inside Diameter N/A 479.00 mm |
480 X 4 B-70 |
IntegrationID
N/A 122227 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 70 | Inside Diameter N/A 480.00 mm |
480 X 4 B-90 |
IntegrationID
N/A 122228 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 90 | Inside Diameter N/A 480.00 mm |
481 X 4 B-70 |
IntegrationID
N/A 122229 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 70 | Inside Diameter N/A 481.00 mm |
481 X 4 B-90 |
IntegrationID
N/A 122230 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 90 | Inside Diameter N/A 481.00 mm |
482 X 4 B-70 |
IntegrationID
N/A 122231 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 70 | Inside Diameter N/A 482.00 mm |
482 X 4 B-90 |
IntegrationID
N/A 122232 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 90 | Inside Diameter N/A 482.00 mm |
483 X 4 B-70 |
IntegrationID
N/A 122233 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 70 | Inside Diameter N/A 483.00 mm |
483 X 4 B-90 |
IntegrationID
N/A 122234 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 90 | Inside Diameter N/A 483.00 mm |
484 X 4 B-70 |
IntegrationID
N/A 122235 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 70 | Inside Diameter N/A 484.00 mm |
484 X 4 B-90 |
IntegrationID
N/A 122236 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 90 | Inside Diameter N/A 484.00 mm |
485 X 4 B-70 |
IntegrationID
N/A 122237 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 70 | Inside Diameter N/A 485.00 mm |
485 X 4 B-90 |
IntegrationID
N/A 122238 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 90 | Inside Diameter N/A 485.00 mm |
486 X 4 B-70 |
IntegrationID
N/A 122239 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 70 | Inside Diameter N/A 486.00 mm |
486 X 4 B-90 |
IntegrationID
N/A 122240 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 90 | Inside Diameter N/A 486.00 mm |
487 X 4 B-70 |
IntegrationID
N/A 122241 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 70 | Inside Diameter N/A 487.00 mm |
487 X 4 B-90 |
IntegrationID
N/A 122242 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 90 | Inside Diameter N/A 487.00 mm |
488 X 4 B-70 |
IntegrationID
N/A 122243 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 70 | Inside Diameter N/A 488.00 mm |
488 X 4 B-90 |
IntegrationID
N/A 122244 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 90 | Inside Diameter N/A 488.00 mm |
489 X 4 B-70 |
IntegrationID
N/A 122245 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 70 | Inside Diameter N/A 489.00 mm |
489 X 4 B-90 |
IntegrationID
N/A 122246 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 90 | Inside Diameter N/A 489.00 mm |
490 X 4 B-70 |
IntegrationID
N/A 122247 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 70 | Inside Diameter N/A 490.00 mm |
490 X 4 B-90 |
IntegrationID
N/A 122248 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.00 mm | Durometer N/A 90 | Inside Diameter N/A 490.00 mm |