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 |
---|---|---|---|---|---|---|---|
328 X 4 B-90 |
IntegrationID
N/A 121924 |
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 328.00 mm |
329 X 4 B-70 |
IntegrationID
N/A 121925 |
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 329.00 mm |
329 X 4 B-90 |
IntegrationID
N/A 121926 |
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 329.00 mm |
330x4.00B70 |
IntegrationID
N/A 121927 |
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 330.00 mm |
330 X 4 B-90 |
IntegrationID
N/A 121928 |
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 330.00 mm |
331 X 4 B-70 |
IntegrationID
N/A 121929 |
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 331.00 mm |
331 X 4 B-90 |
IntegrationID
N/A 121930 |
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 331.00 mm |
332x4.00B70 |
IntegrationID
N/A 121931 |
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 332.00 mm |
332 X 4 B-90 |
IntegrationID
N/A 121932 |
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 332.00 mm |
333 X 4 B-70 |
IntegrationID
N/A 121933 |
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 333.00 mm |
333 X 4 B-90 |
IntegrationID
N/A 121934 |
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 333.00 mm |
334 X 4 B-70 |
IntegrationID
N/A 121935 |
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 334.00 mm |
334 X 4 B-90 |
IntegrationID
N/A 121936 |
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 334.00 mm |
335x4.00B70 |
IntegrationID
N/A 121937 |
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 335.00 mm |
335 X 4 B-90 |
IntegrationID
N/A 121938 |
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 335.00 mm |
336 X 4 B-70 |
IntegrationID
N/A 121939 |
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 336.00 mm |
336 X 4 B-90 |
IntegrationID
N/A 121940 |
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 336.00 mm |
337 X 4 B-70 |
IntegrationID
N/A 121941 |
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 337.00 mm |
337 X 4 B-90 |
IntegrationID
N/A 121942 |
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 337.00 mm |
338 X 4 B-70 |
IntegrationID
N/A 121943 |
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 338.00 mm |
338 X 4 B-90 |
IntegrationID
N/A 121944 |
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 338.00 mm |
339 X 4 B-70 |
IntegrationID
N/A 121945 |
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 339.00 mm |
339 X 4 B-90 |
IntegrationID
N/A 121946 |
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 339.00 mm |
340x4.00B70 |
IntegrationID
N/A 121947 |
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 340.00 mm |
340 X 4 B-90 |
IntegrationID
N/A 121948 |
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 340.00 mm |