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 |
---|---|---|---|---|---|---|---|
8 X 4.5 B-90 |
IntegrationID
N/A 122274 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 90 | Inside Diameter N/A 8.00 mm |
9 X 4.5 B-70 |
IntegrationID
N/A 122275 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 70 | Inside Diameter N/A 9.00 mm |
9 X 4.5 B-90 |
IntegrationID
N/A 122276 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 90 | Inside Diameter N/A 9.00 mm |
9.5 X 4.5 B-70 |
IntegrationID
N/A 122277 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 70 | Inside Diameter N/A 9.50 mm |
9.5 X 4.5 B-90 |
IntegrationID
N/A 122278 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 90 | Inside Diameter N/A 9.50 mm |
10 X 4.5 B-70 |
IntegrationID
N/A 122279 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 70 | Inside Diameter N/A 10.00 mm |
10 X 4.5 B-90 |
IntegrationID
N/A 122280 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 90 | Inside Diameter N/A 10.00 mm |
10.5 X 4.5 B-70 |
IntegrationID
N/A 122281 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 70 | Inside Diameter N/A 10.50 mm |
10.5 X 4.5 B-90 |
IntegrationID
N/A 122282 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 90 | Inside Diameter N/A 10.50 mm |
11 X 4.5 B-70 |
IntegrationID
N/A 122283 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 70 | Inside Diameter N/A 11.00 mm |
11 X 4.5 B-90 |
IntegrationID
N/A 122284 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 90 | Inside Diameter N/A 11.00 mm |
12 X 4.5 B-70 |
IntegrationID
N/A 122285 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 70 | Inside Diameter N/A 12.00 mm |
12 X 4.5 B-90 |
IntegrationID
N/A 122286 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 90 | Inside Diameter N/A 12.00 mm |
13 X 4.5 B-70 |
IntegrationID
N/A 122287 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 70 | Inside Diameter N/A 13.00 mm |
13 X 4.5 B-90 |
IntegrationID
N/A 122288 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 90 | Inside Diameter N/A 13.00 mm |
15 X 4.5 B-70 |
IntegrationID
N/A 122289 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 70 | Inside Diameter N/A 15.00 mm |
15 X 4.5 B-90 |
IntegrationID
N/A 122290 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 90 | Inside Diameter N/A 15.00 mm |
15.5 X 4.5 B-70 |
IntegrationID
N/A 122291 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 70 | Inside Diameter N/A 15.50 mm |
15.5 X 4.5 B-90 |
IntegrationID
N/A 122292 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 90 | Inside Diameter N/A 15.50 mm |
16 X 4.5 B-70 |
IntegrationID
N/A 122293 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 70 | Inside Diameter N/A 16.00 mm |
16 X 4.5 B-90 |
IntegrationID
N/A 122294 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 90 | Inside Diameter N/A 16.00 mm |
17 X 4.5 B-70 |
IntegrationID
N/A 122295 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 70 | Inside Diameter N/A 17.00 mm |
17 X 4.5 B-90 |
IntegrationID
N/A 122296 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 90 | Inside Diameter N/A 17.00 mm |
18 X 4.5 B-70 |
IntegrationID
N/A 122297 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 70 | Inside Diameter N/A 18.00 mm |
18 X 4.5 B-90 |
IntegrationID
N/A 122298 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 4.50 mm | Durometer N/A 90 | Inside Diameter N/A 18.00 mm |