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 |
---|---|---|---|---|---|---|---|
128 X 4.5 B-90 |
IntegrationID
N/A 122476 |
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 128.00 mm |
130 X 4.5 B-70 |
IntegrationID
N/A 122477 |
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 130.00 mm |
130 X 4.5 B-90 |
IntegrationID
N/A 122478 |
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 130.00 mm |
131.5 X 4.5 B-70 |
IntegrationID
N/A 122479 |
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 131.50 mm |
131.5 X 4.5 B-90 |
IntegrationID
N/A 122480 |
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 131.50 mm |
134.5 X 4.5 B-70 |
IntegrationID
N/A 122481 |
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 134.50 mm |
134.5 X 4.5 B-90 |
IntegrationID
N/A 122482 |
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 134.50 mm |
137 X 4.5 B-70 |
IntegrationID
N/A 122483 |
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 137.00 mm |
137 X 4.5 B-90 |
IntegrationID
N/A 122484 |
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 137.00 mm |
140 X 4.5 B-70 |
IntegrationID
N/A 122485 |
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 140.00 mm |
140 X 4.5 B-90 |
IntegrationID
N/A 122486 |
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 140.00 mm |
140.5 X 4.5 B-70 |
IntegrationID
N/A 122487 |
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 140.50 mm |
140.5 X 4.5 B-90 |
IntegrationID
N/A 122488 |
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 140.50 mm |
150 X 4.5 B-70 |
IntegrationID
N/A 122489 |
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 150.00 mm |
150 X 4.5 B-90 |
IntegrationID
N/A 122490 |
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 150.00 mm |
153 X 4.5 B-70 |
IntegrationID
N/A 122491 |
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 153.00 mm |
153 X 4.5 B-90 |
IntegrationID
N/A 122492 |
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 153.00 mm |
155 X 4.5 B-70 |
IntegrationID
N/A 122493 |
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 155.00 mm |
155 X 4.5 B-90 |
IntegrationID
N/A 122494 |
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 155.00 mm |
157 X 4.5 B-70 |
IntegrationID
N/A 122495 |
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 157.00 mm |
157 X 4.5 B-90 |
IntegrationID
N/A 122496 |
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 157.00 mm |
160 X 4.5 B-70 |
IntegrationID
N/A 122497 |
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 160.00 mm |
160 X 4.5 B-90 |
IntegrationID
N/A 122498 |
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 160.00 mm |
165 X 4.5 B-70 |
IntegrationID
N/A 122499 |
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 165.00 mm |
165 X 4.5 B-90 |
IntegrationID
N/A 122500 |
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 165.00 mm |