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 |
---|---|---|---|---|---|---|---|
437 X 3.5 B-70 |
IntegrationID
N/A 120843 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.50 mm | Durometer N/A 70 | Inside Diameter N/A 437.00 mm |
437 X 3.5 B-90 |
IntegrationID
N/A 120844 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.50 mm | Durometer N/A 90 | Inside Diameter N/A 437.00 mm |
438 X 3.5 B-70 |
IntegrationID
N/A 120845 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.50 mm | Durometer N/A 70 | Inside Diameter N/A 438.00 mm |
438 X 3.5 B-90 |
IntegrationID
N/A 120846 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.50 mm | Durometer N/A 90 | Inside Diameter N/A 438.00 mm |
439 X 3.5 B-70 |
IntegrationID
N/A 120847 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.50 mm | Durometer N/A 70 | Inside Diameter N/A 439.00 mm |
439 X 3.5 B-90 |
IntegrationID
N/A 120848 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.50 mm | Durometer N/A 90 | Inside Diameter N/A 439.00 mm |
440 X 3.5 B-70 |
IntegrationID
N/A 120849 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.50 mm | Durometer N/A 70 | Inside Diameter N/A 440.00 mm |
440 X 3.5 B-90 |
IntegrationID
N/A 120850 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.50 mm | Durometer N/A 90 | Inside Diameter N/A 440.00 mm |
4.34 X 3.53 B-70 |
IntegrationID
N/A 120851 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 201 | Cross Section Width N/A 3.53 mm | Durometer N/A 70 | Inside Diameter N/A 4.34 mm |
4.34 X 3.53 B-90 |
IntegrationID
N/A 120852 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 201 | Cross Section Width N/A 3.53 mm | Durometer N/A 90 | Inside Diameter N/A 4.34 mm |
5.94 X 3.53 B-70 |
IntegrationID
N/A 120853 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 202 | Cross Section Width N/A 3.53 mm | Durometer N/A 70 | Inside Diameter N/A 5.94 mm |
5.94 X 3.53 B-90 |
IntegrationID
N/A 120854 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 202 | Cross Section Width N/A 3.53 mm | Durometer N/A 90 | Inside Diameter N/A 5.94 mm |
7.52 X 3.53 B-70 |
IntegrationID
N/A 120855 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 203 | Cross Section Width N/A 3.53 mm | Durometer N/A 70 | Inside Diameter N/A 7.52 mm |
7.52 X 3.53 B-90 |
IntegrationID
N/A 120856 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 203 | Cross Section Width N/A 3.53 mm | Durometer N/A 90 | Inside Diameter N/A 7.52 mm |
9.34 X 3.53 B-70 |
IntegrationID
N/A 120857 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 204 | Cross Section Width N/A 3.53 mm | Durometer N/A 70 | Inside Diameter N/A 9.34 mm |
9.34 X 3.53 B-90 |
IntegrationID
N/A 120858 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 204 | Cross Section Width N/A 3.53 mm | Durometer N/A 90 | Inside Diameter N/A 9.34 mm |
10.69 X 3.53 B-70 |
IntegrationID
N/A 120859 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 205 | Cross Section Width N/A 3.53 mm | Durometer N/A 70 | Inside Diameter N/A 10.69 mm |
10.69 X 3.53 B-90 |
IntegrationID
N/A 120860 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 205 | Cross Section Width N/A 3.53 mm | Durometer N/A 90 | Inside Diameter N/A 10.69 mm |
12.29 X 3.53 B-70 |
IntegrationID
N/A 120861 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 206 | Cross Section Width N/A 3.53 mm | Durometer N/A 70 | Inside Diameter N/A 12.29 mm |
12.29 X 3.53 B-90 |
IntegrationID
N/A 120862 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 206 | Cross Section Width N/A 3.53 mm | Durometer N/A 90 | Inside Diameter N/A 12.29 mm |
13.87 X 3.53 B-70 |
IntegrationID
N/A 120863 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 207 | Cross Section Width N/A 3.53 mm | Durometer N/A 70 | Inside Diameter N/A 13.87 mm |
13.87 X 3.53 B-90 |
IntegrationID
N/A 120864 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 207 | Cross Section Width N/A 3.53 mm | Durometer N/A 90 | Inside Diameter N/A 13.87 mm |
15.47 X 3.53 B-70 |
IntegrationID
N/A 120865 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 208 | Cross Section Width N/A 3.53 mm | Durometer N/A 70 | Inside Diameter N/A 15.47 mm |
15.47 X 3.53 B-90 |
IntegrationID
N/A 120866 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 208 | Cross Section Width N/A 3.53 mm | Durometer N/A 90 | Inside Diameter N/A 15.47 mm |
17.04 X 3.53 B-70 |
IntegrationID
N/A 120867 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 209 | Cross Section Width N/A 3.53 mm | Durometer N/A 70 | Inside Diameter N/A 17.04 mm |