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 |
---|---|---|---|---|---|---|---|
291 X 4 B-70 |
IntegrationID
N/A 121849 |
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 291.00 mm |
291 X 4 B-90 |
IntegrationID
N/A 121850 |
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 291.00 mm |
292x4.00B70 |
IntegrationID
N/A 121851 |
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 292.00 mm |
292 X 4 B-90 |
IntegrationID
N/A 121852 |
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 292.00 mm |
293 X 4 B-70 |
IntegrationID
N/A 121853 |
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 293.00 mm |
293 X 4 B-90 |
IntegrationID
N/A 121854 |
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 293.00 mm |
294 X 4 B-70 |
IntegrationID
N/A 121855 |
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 294.00 mm |
294 X 4 B-90 |
IntegrationID
N/A 121856 |
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 294.00 mm |
295x4.00B70 |
IntegrationID
N/A 121857 |
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 295.00 mm |
295 X 4 B-90 |
IntegrationID
N/A 121858 |
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 295.00 mm |
296 X 4 B-70 |
IntegrationID
N/A 121859 |
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 296.00 mm |
296 X 4 B-90 |
IntegrationID
N/A 121860 |
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 296.00 mm |
297x4.00B70 |
IntegrationID
N/A 121861 |
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 297.00 mm |
297 X 4 B-90 |
IntegrationID
N/A 121862 |
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 297.00 mm |
298 X 4 B-70 |
IntegrationID
N/A 121863 |
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 298.00 mm |
298 X 4 B-90 |
IntegrationID
N/A 121864 |
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 298.00 mm |
299 X 4 B-70 |
IntegrationID
N/A 121865 |
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 299.00 mm |
299 X 4 B-90 |
IntegrationID
N/A 121866 |
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 299.00 mm |
300x4.00B70 |
IntegrationID
N/A 121867 |
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 300.00 mm |
300 X 4 B-90 |
IntegrationID
N/A 121868 |
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 300.00 mm |
301 X 4 B-70 |
IntegrationID
N/A 121869 |
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 301.00 mm |
301 X 4 B-90 |
IntegrationID
N/A 121870 |
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 301.00 mm |
302 X 4 B-70 |
IntegrationID
N/A 121871 |
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 302.00 mm |
302 X 4 B-90 |
IntegrationID
N/A 121872 |
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 302.00 mm |
303 X 4 B-70 |
IntegrationID
N/A 121873 |
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 303.00 mm |