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 |
---|---|---|---|---|---|---|---|
28.3 X 1.78 B-90 |
IntegrationID
N/A 117696 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 24 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 28.30 mm |
29.87 X 1.78 B-70 |
IntegrationID
N/A 117697 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 25 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 29.87 mm |
29.87 X 1.78 B-90 |
IntegrationID
N/A 117698 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 25 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 29.87 mm |
31.47 X 1.78 B-70 |
IntegrationID
N/A 117699 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 26 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 31.47 mm |
31.47 X 1.78 B-90 |
IntegrationID
N/A 117700 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 26 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 31.47 mm |
33.05 X 1.78 B-70 |
IntegrationID
N/A 117701 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 27 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 33.05 mm |
33.05 X 1.78 B-90 |
IntegrationID
N/A 117702 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 27 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 33.05 mm |
34.65 X 1.78 B-70 |
IntegrationID
N/A 117703 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 28 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 34.65 mm |
34.65 X 1.78 B-90 |
IntegrationID
N/A 117704 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 28 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 34.65 mm |
36 X 1.78 B-70 |
IntegrationID
N/A 117705 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 36.00 mm |
36 X 1.78 B-90 |
IntegrationID
N/A 117706 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 36.00 mm |
36.27 X 1.78 B-70 |
IntegrationID
N/A 117707 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A BS517 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 36.27 mm |
36.27 X 1.78 B-90 |
IntegrationID
N/A 117708 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A BS517 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 36.27 mm |
37.82 X 1.78 B-70 |
IntegrationID
N/A 117709 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 29 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 37.82 mm |
37.82 X 1.78 B-90 |
IntegrationID
N/A 117710 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 29 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 37.82 mm |
39.45 X 1.78 B-70 |
IntegrationID
N/A 117711 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A BS519 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 39.45 mm |
39.45 X 1.78 B-90 |
IntegrationID
N/A 117712 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A BS519 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 39.45 mm |
41 X 1.78 B-70 |
IntegrationID
N/A 117713 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 30 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 41.00 mm |
41 X 1.78 B-90 |
IntegrationID
N/A 117714 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 30 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 41.00 mm |
44.17 X 1.78 B-70 |
IntegrationID
N/A 117715 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 31 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 44.17 mm |
44.17 X 1.78 B-90 |
IntegrationID
N/A 117716 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 31 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 44.17 mm |
45.84 X 1.78 B-70 |
IntegrationID
N/A 117717 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 45.84 mm |
45.84 X 1.78 B-90 |
IntegrationID
N/A 117718 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 45.84 mm |
47.35 X 1.78 B-70 |
IntegrationID
N/A 117719 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 32 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 47.35 mm |
47.35 X 1.78 B-90 |
IntegrationID
N/A 117720 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 32 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 47.35 mm |