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 |
---|---|---|---|---|---|---|---|
33 X 4 B-90 |
IntegrationID
N/A 121320 |
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 33.00 mm |
33.5 X 4 B-70 |
IntegrationID
N/A 121321 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A V34 | Cross Section Width N/A 4.00 mm | Durometer N/A 70 | Inside Diameter N/A 33.50 mm |
33.5 X 4 B-90 |
IntegrationID
N/A 121322 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A V34 | Cross Section Width N/A 4.00 mm | Durometer N/A 90 | Inside Diameter N/A 33.50 mm |
34x4.00B70 |
IntegrationID
N/A 121323 |
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 34.00 mm |
34 X 4 B-90 |
IntegrationID
N/A 121324 |
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 34.00 mm |
35x4.00B70 |
IntegrationID
N/A 121325 |
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 35.00 mm |
35 X 4 B-90 |
IntegrationID
N/A 121326 |
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 35.00 mm |
36x4.00B70 |
IntegrationID
N/A 121327 |
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 36.00 mm |
36 X 4 B-90 |
IntegrationID
N/A 121328 |
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 36.00 mm |
37x4.00B70 |
IntegrationID
N/A 121329 |
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 37.00 mm |
37 X 4 B-90 |
IntegrationID
N/A 121330 |
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 37.00 mm |
38x4.00B70 |
IntegrationID
N/A 121331 |
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 38.00 mm |
38 X 4 B-90 |
IntegrationID
N/A 121332 |
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 38.00 mm |
39x4.00B70 |
IntegrationID
N/A 121333 |
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 39.00 mm |
39 X 4 B-90 |
IntegrationID
N/A 121334 |
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 39.00 mm |
39.5 X 4 B-70 |
IntegrationID
N/A 121335 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A V40 | Cross Section Width N/A 4.00 mm | Durometer N/A 70 | Inside Diameter N/A 39.50 mm |
39.5 X 4 B-90 |
IntegrationID
N/A 121336 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A V40 | Cross Section Width N/A 4.00 mm | Durometer N/A 90 | Inside Diameter N/A 39.50 mm |
40x4.00B70 |
IntegrationID
N/A 121337 |
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 40.00 mm |
40 X 4 B-90 |
IntegrationID
N/A 121338 |
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 40.00 mm |
41x4.00B70 |
IntegrationID
N/A 121339 |
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 41.00 mm |
41 X 4 B-90 |
IntegrationID
N/A 121340 |
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 41.00 mm |
42x4.00B70 |
IntegrationID
N/A 121341 |
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 42.00 mm |
42 X 4 B-90 |
IntegrationID
N/A 121342 |
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 42.00 mm |
43x4.00B70 |
IntegrationID
N/A 121343 |
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 43.00 mm |
43 X 4 B-90 |
IntegrationID
N/A 121344 |
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 43.00 mm |