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 |
---|---|---|---|---|---|---|---|
128x3.55B70 |
IntegrationID
N/A 121195 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 70 | Inside Diameter N/A 128.00 mm |
128 X 3.55 B-90 |
IntegrationID
N/A 121196 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 90 | Inside Diameter N/A 128.00 mm |
132 X 3.55 B-70 |
IntegrationID
N/A 121197 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 70 | Inside Diameter N/A 132.00 mm |
132 X 3.55 B-90 |
IntegrationID
N/A 121198 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 90 | Inside Diameter N/A 132.00 mm |
136 X 3.55 B-70 |
IntegrationID
N/A 121199 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 70 | Inside Diameter N/A 136.00 mm |
136 X 3.55 B-90 |
IntegrationID
N/A 121200 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 90 | Inside Diameter N/A 136.00 mm |
140x3.55B70 |
IntegrationID
N/A 121201 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 70 | Inside Diameter N/A 140.00 mm |
140 X 3.55 B-90 |
IntegrationID
N/A 121202 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 90 | Inside Diameter N/A 140.00 mm |
145x3.55B70 |
IntegrationID
N/A 121203 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 70 | Inside Diameter N/A 145.00 mm |
145 X 3.55 B-90 |
IntegrationID
N/A 121204 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 90 | Inside Diameter N/A 145.00 mm |
150 X 3.55 B-70 |
IntegrationID
N/A 121205 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 70 | Inside Diameter N/A 150.00 mm |
150 X 3.55 B-90 |
IntegrationID
N/A 121206 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 90 | Inside Diameter N/A 150.00 mm |
155 X 3.55 B-70 |
IntegrationID
N/A 121207 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 70 | Inside Diameter N/A 155.00 mm |
155 X 3.55 B-90 |
IntegrationID
N/A 121208 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 90 | Inside Diameter N/A 155.00 mm |
160 X 3.55 B-70 |
IntegrationID
N/A 121209 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 70 | Inside Diameter N/A 160.00 mm |
160 X 3.55 B-90 |
IntegrationID
N/A 121210 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 90 | Inside Diameter N/A 160.00 mm |
165 X 3.55 B-70 |
IntegrationID
N/A 121211 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 70 | Inside Diameter N/A 165.00 mm |
165 X 3.55 B-90 |
IntegrationID
N/A 121212 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 90 | Inside Diameter N/A 165.00 mm |
170x3.55B70 |
IntegrationID
N/A 121213 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 70 | Inside Diameter N/A 170.00 mm |
170 X 3.55 B-90 |
IntegrationID
N/A 121214 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 90 | Inside Diameter N/A 170.00 mm |
175x3.55B70 |
IntegrationID
N/A 121215 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 70 | Inside Diameter N/A 175.00 mm |
175 X 3.55 B-90 |
IntegrationID
N/A 121216 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 90 | Inside Diameter N/A 175.00 mm |
180 X 3.55 B-70 |
IntegrationID
N/A 121217 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 70 | Inside Diameter N/A 180.00 mm |
180 X 3.55 B-90 |
IntegrationID
N/A 121218 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 90 | Inside Diameter N/A 180.00 mm |
185x3.55B70 |
IntegrationID
N/A 121219 |
Type N/A Metric Standard O-Ring | Material N/A Buna | Cross Reference N/A | Cross Section Width N/A 3.55 mm | Durometer N/A 70 | Inside Diameter N/A 185.00 mm |