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 |
---|---|---|---|---|---|---|---|
30.5 X 3.5 B-70 |
IntegrationID
N/A 119993 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.50 mm | Durometer N/A 70 | Inside Diameter N/A 30.50 mm |
30.5 X 3.5 B-90 |
IntegrationID
N/A 119994 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.50 mm | Durometer N/A 90 | Inside Diameter N/A 30.50 mm |
30.7x3.50B70 |
IntegrationID
N/A 119995 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A P34 | Cross Section Width N/A 3.50 mm | Durometer N/A 70 | Inside Diameter N/A 30.70 mm |
30.7 X 3.5 B-90 |
IntegrationID
N/A 119996 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A P34 | Cross Section Width N/A 3.50 mm | Durometer N/A 90 | Inside Diameter N/A 30.70 mm |
31x3.50B70 |
IntegrationID
N/A 119997 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.50 mm | Durometer N/A 70 | Inside Diameter N/A 31.00 mm |
31 X 3.5 B-90 |
IntegrationID
N/A 119998 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.50 mm | Durometer N/A 90 | Inside Diameter N/A 31.00 mm |
31.2x3.50B70 |
IntegrationID
N/A 119999 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A P31.5 | Cross Section Width N/A 3.50 mm | Durometer N/A 70 | Inside Diameter N/A 31.20 mm |
31.2 X 3.5 B-90 |
IntegrationID
N/A 120000 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A P31.5 | Cross Section Width N/A 3.50 mm | Durometer N/A 90 | Inside Diameter N/A 31.20 mm |
31.7x3.50B70 |
IntegrationID
N/A 120001 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A P32 | Cross Section Width N/A 3.50 mm | Durometer N/A 70 | Inside Diameter N/A 31.70 mm |
31.7 X 3.5 B-90 |
IntegrationID
N/A 120002 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A P32 | Cross Section Width N/A 3.50 mm | Durometer N/A 90 | Inside Diameter N/A 31.70 mm |
32x3.50B70 |
IntegrationID
N/A 120003 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.50 mm | Durometer N/A 70 | Inside Diameter N/A 32.00 mm |
32 X 3.5 B-90 |
IntegrationID
N/A 120004 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.50 mm | Durometer N/A 90 | Inside Diameter N/A 32.00 mm |
33x3.50B70 |
IntegrationID
N/A 120005 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.50 mm | Durometer N/A 70 | Inside Diameter N/A 33.00 mm |
33 X 3.5 B-90 |
IntegrationID
N/A 120006 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.50 mm | Durometer N/A 90 | Inside Diameter N/A 33.00 mm |
33.7x3.50B70 |
IntegrationID
N/A 120007 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A P34 | Cross Section Width N/A 3.50 mm | Durometer N/A 70 | Inside Diameter N/A 33.70 mm |
33.7 X 3.5 B-90 |
IntegrationID
N/A 120008 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A P34 | Cross Section Width N/A 3.50 mm | Durometer N/A 90 | Inside Diameter N/A 33.70 mm |
34x3.50B70 |
IntegrationID
N/A 120009 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.50 mm | Durometer N/A 70 | Inside Diameter N/A 34.00 mm |
34 X 3.5 B-90 |
IntegrationID
N/A 120010 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.50 mm | Durometer N/A 90 | Inside Diameter N/A 34.00 mm |
34.7x3.50B70 |
IntegrationID
N/A 120011 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A P35 | Cross Section Width N/A 3.50 mm | Durometer N/A 70 | Inside Diameter N/A 34.70 mm |
34.7 X 3.5 B-90 |
IntegrationID
N/A 120012 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A P35 | Cross Section Width N/A 3.50 mm | Durometer N/A 90 | Inside Diameter N/A 34.70 mm |
35x3.50B70 |
IntegrationID
N/A 120013 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.50 mm | Durometer N/A 70 | Inside Diameter N/A 35.00 mm |
35 X 3.5 B-90 |
IntegrationID
N/A 120014 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.50 mm | Durometer N/A 90 | Inside Diameter N/A 35.00 mm |
35.2x3.50B70 |
IntegrationID
N/A 120015 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A P35.5 | Cross Section Width N/A 3.50 mm | Durometer N/A 70 | Inside Diameter N/A 35.20 mm |
35.2 X 3.5 B-90 |
IntegrationID
N/A 120016 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A P35.5 | Cross Section Width N/A 3.50 mm | Durometer N/A 90 | Inside Diameter N/A 35.20 mm |
35.7x3.50B70 |
IntegrationID
N/A 120017 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A P36 | Cross Section Width N/A 3.50 mm | Durometer N/A 70 | Inside Diameter N/A 35.70 mm |