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 |
---|---|---|---|---|---|---|---|
50.52 X 1.78 B-70 |
IntegrationID
N/A 117721 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 33 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 50.52 mm |
50.52 X 1.78 B-90 |
IntegrationID
N/A 117722 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 33 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 50.52 mm |
53.7 X 1.78 B-70 |
IntegrationID
N/A 117723 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 34 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 53.70 mm |
53.7 X 1.78 B-90 |
IntegrationID
N/A 117724 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 34 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 53.70 mm |
56.87 X 1.78 B-70 |
IntegrationID
N/A 117725 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 35 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 56.87 mm |
56.87 X 1.78 B-90 |
IntegrationID
N/A 117726 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 35 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 56.87 mm |
60.05 X 1.78 B-70 |
IntegrationID
N/A 117727 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 36 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 60.05 mm |
60.05 X 1.78 B-90 |
IntegrationID
N/A 117728 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 36 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 60.05 mm |
63.22 X 1.78 B-70 |
IntegrationID
N/A 117729 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 37 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 63.22 mm |
63.22 X 1.78 B-90 |
IntegrationID
N/A 117730 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 37 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 63.22 mm |
66.4 X 1.78 B-70 |
IntegrationID
N/A 117731 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 38 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 66.40 mm |
66.4 X 1.78 B-90 |
IntegrationID
N/A 117732 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 38 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 66.40 mm |
69.57 X 1.78 B-70 |
IntegrationID
N/A 117733 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 39 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 69.57 mm |
69.57 X 1.78 B-90 |
IntegrationID
N/A 117734 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 39 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 69.57 mm |
72.75 X 1.78 B-70 |
IntegrationID
N/A 117735 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 40 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 72.75 mm |
72.75 X 1.78 B-90 |
IntegrationID
N/A 117736 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 40 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 72.75 mm |
75.92 X 1.78 B-70 |
IntegrationID
N/A 117737 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 41 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 75.92 mm |
75.92 X 1.78 B-90 |
IntegrationID
N/A 117738 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 41 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 75.92 mm |
79 X 1.78 B-70 |
IntegrationID
N/A 117739 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A BS532 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 79.00 mm |
79 X 1.78 B-90 |
IntegrationID
N/A 117740 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A BS532 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 79.00 mm |
82.27 X 1.78 B-70 |
IntegrationID
N/A 117741 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 42 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 82.27 mm |
82.27 X 1.78 B-90 |
IntegrationID
N/A 117742 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 42 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 82.27 mm |
85.34 X 1.78 B-70 |
IntegrationID
N/A 117743 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A BS534 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 85.34 mm |
85.34 X 1.78 B-90 |
IntegrationID
N/A 117744 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A BS534 | Cross Section Width N/A 1.78 mm | Durometer N/A 90 | Inside Diameter N/A 85.34 mm |
88.62 X 1.78 B-70 |
IntegrationID
N/A 117745 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A 43 | Cross Section Width N/A 1.78 mm | Durometer N/A 70 | Inside Diameter N/A 88.62 mm |