Monroe
OneMonroe
Locations Throughout the Country
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Tel: (877) 740-2007
Fax: (800) 453-9683
Email: sales@askmonroe.com
Website: monroeengineering.com
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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.

Metric O-Rings
Unit of Measure
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Item #

IntegrationID

Type

Material

Cross Reference

Cross Section Width

Durometer

Inside Diameter

Product Guides

Quantity
5.28 X 1.78 B-90 N/A
117646 		N/A Metric Standard O-Ring N/A Buna N/A 9 N/A 1.78 mm N/A 90 N/A 5.28 mm N/A Seal Guides
6.07 X 1.78 B-70 N/A
117647 		N/A Metric Standard O-Ring N/A Buna N/A 10 N/A 1.78 mm N/A 70 N/A 6.07 mm N/A Seal Guides
6.07 X 1.78 B-90 N/A
117648 		N/A Metric Standard O-Ring N/A Buna N/A 10 N/A 1.78 mm N/A 90 N/A 6.07 mm N/A Seal Guides
6.35 X 1.78 B-70 N/A
117649 		N/A Metric Standard O-Ring N/A Buna N/A BS803 N/A 1.78 mm N/A 70 N/A 6.35 mm N/A Seal Guides
6.35 X 1.78 B-90 N/A
117650 		N/A Metric Standard O-Ring N/A Buna N/A BS803 N/A 1.78 mm N/A 90 N/A 6.35 mm N/A Seal Guides
6.75 X 1.78 B-70 N/A
117651 		N/A Metric Standard O-Ring N/A Buna N/A BS610 N/A 1.78 mm N/A 70 N/A 6.75 mm N/A Seal Guides
6.75 X 1.78 B-90 N/A
117652 		N/A Metric Standard O-Ring N/A Buna N/A BS610 N/A 1.78 mm N/A 90 N/A 6.75 mm N/A Seal Guides
7.65 X 1.78 B-70 N/A
117653 		N/A Metric Standard O-Ring N/A Buna N/A 11 N/A 1.78 mm N/A 70 N/A 7.65 mm N/A Seal Guides
7.65 X 1.78 B-90 N/A
117654 		N/A Metric Standard O-Ring N/A Buna N/A 11 N/A 1.78 mm N/A 90 N/A 7.65 mm N/A Seal Guides
7.94 X 1.78 B-70 N/A
117655 		N/A Metric Standard O-Ring N/A Buna N/A BS804 N/A 1.78 mm N/A 70 N/A 7.94 mm N/A Seal Guides
7.94 X 1.78 B-90 N/A
117656 		N/A Metric Standard O-Ring N/A Buna N/A BS804 N/A 1.78 mm N/A 90 N/A 7.94 mm N/A Seal Guides
8.73 X 1.78 B-70 N/A
117657 		N/A Metric Standard O-Ring N/A Buna N/A BS611 N/A 1.78 mm N/A 70 N/A 8.73 mm N/A Seal Guides
8.73 X 1.78 B-90 N/A
117658 		N/A Metric Standard O-Ring N/A Buna N/A BS611 N/A 1.78 mm N/A 90 N/A 8.73 mm N/A Seal Guides
9.25 X 1.78 B-70 N/A
117659 		N/A Metric Standard O-Ring N/A Buna N/A 12 N/A 1.78 mm N/A 70 N/A 9.25 mm N/A Seal Guides
9.25 X 1.78 B-90 N/A
117660 		N/A Metric Standard O-Ring N/A Buna N/A 12 N/A 1.78 mm N/A 90 N/A 9.25 mm N/A Seal Guides
9.52 X 1.78 B-70 N/A
117661 		N/A Metric Standard O-Ring N/A Buna N/A N/A 1.78 mm N/A 70 N/A 9.52 mm N/A Seal Guides
9.52 X 1.78 B-90 N/A
117662 		N/A Metric Standard O-Ring N/A Buna N/A N/A 1.78 mm N/A 90 N/A 9.52 mm N/A Seal Guides
10.82 X 1.78 B-70 N/A
117663 		N/A Metric Standard O-Ring N/A Buna N/A 13 N/A 1.78 mm N/A 70 N/A 10.82 mm N/A Seal Guides
10.82 X 1.78 B-90 N/A
117664 		N/A Metric Standard O-Ring N/A Buna N/A 13 N/A 1.78 mm N/A 90 N/A 10.82 mm N/A Seal Guides
11.11 X 1.78 B-70 N/A
117665 		N/A Metric Standard O-Ring N/A Buna N/A BS806 N/A 1.78 mm N/A 70 N/A 11.11 mm N/A Seal Guides
11.11 X 1.78 B-90 N/A
117666 		N/A Metric Standard O-Ring N/A Buna N/A BS806 N/A 1.78 mm N/A 90 N/A 11.11 mm N/A Seal Guides
11.91 X 1.78 B-70 N/A
117667 		N/A Metric Standard O-Ring N/A Buna N/A N/A 1.78 mm N/A 70 N/A 11.91 mm N/A Seal Guides
11.91 X 1.78 B-90 N/A
117668 		N/A Metric Standard O-Ring N/A Buna N/A N/A 1.78 mm N/A 90 N/A 11.91 mm N/A Seal Guides
12.42 X 1.78 B-70 N/A
117669 		N/A Metric Standard O-Ring N/A Buna N/A 14 N/A 1.78 mm N/A 70 N/A 12.42 mm N/A Seal Guides
12.42 X 1.78 B-90 N/A
117670 		N/A Metric Standard O-Ring N/A Buna N/A 14 N/A 1.78 mm N/A 90 N/A 12.42 mm N/A Seal Guides
Unit of Measure
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