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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
45.59 X 6.99 B-70 N/A
124611
N/A Metric Standard O-Ring N/A Buna N/A 405 N/A 6.99 mm N/A 70 N/A 45.59 mm N/A Seal Guides
45.59 X 6.99 B-90 N/A
124612
N/A Metric Standard O-Ring N/A Buna N/A 405 N/A 6.99 mm N/A 90 N/A 45.59 mm N/A Seal Guides
46.99 X 6.99 B-70 N/A
124613
N/A Metric Standard O-Ring N/A Buna N/A 404 N/A 6.99 mm N/A 70 N/A 46.99 mm N/A Seal Guides
46.99 X 6.99 B-90 N/A
124614
N/A Metric Standard O-Ring N/A Buna N/A 404 N/A 6.99 mm N/A 90 N/A 46.99 mm N/A Seal Guides
53.34 X 6.99 B-70 N/A
124615
N/A Metric Standard O-Ring N/A Buna N/A 406 N/A 6.99 mm N/A 70 N/A 53.34 mm N/A Seal Guides
53.34 X 6.99 B-90 N/A
124616
N/A Metric Standard O-Ring N/A Buna N/A 406 N/A 6.99 mm N/A 90 N/A 53.34 mm N/A Seal Guides
56.52 X 6.99 B-70 N/A
124617
N/A Metric Standard O-Ring N/A Buna N/A 407 N/A 6.99 mm N/A 70 N/A 56.52 mm N/A Seal Guides
56.52 X 6.99 B-90 N/A
124618
N/A Metric Standard O-Ring N/A Buna N/A 407 N/A 6.99 mm N/A 90 N/A 56.52 mm N/A Seal Guides
59.69 X 6.99 B-70 N/A
124619
N/A Metric Standard O-Ring N/A Buna N/A 408 N/A 6.99 mm N/A 70 N/A 59.69 mm N/A Seal Guides
59.69 X 6.99 B-90 N/A
124620
N/A Metric Standard O-Ring N/A Buna N/A 408 N/A 6.99 mm N/A 90 N/A 59.69 mm N/A Seal Guides
62.87 X 6.99 B-70 N/A
124621
N/A Metric Standard O-Ring N/A Buna N/A 409 N/A 6.99 mm N/A 70 N/A 62.87 mm N/A Seal Guides
62.87 X 6.99 B-90 N/A
124622
N/A Metric Standard O-Ring N/A Buna N/A 409 N/A 6.99 mm N/A 90 N/A 62.87 mm N/A Seal Guides
66.04 X 6.99 B-70 N/A
124623
N/A Metric Standard O-Ring N/A Buna N/A 410 N/A 6.99 mm N/A 70 N/A 66.04 mm N/A Seal Guides
66.04 X 6.99 B-90 N/A
124624
N/A Metric Standard O-Ring N/A Buna N/A 410 N/A 6.99 mm N/A 90 N/A 66.04 mm N/A Seal Guides
69.22 X 6.99 B-70 N/A
124625
N/A Metric Standard O-Ring N/A Buna N/A 411 N/A 6.99 mm N/A 70 N/A 69.22 mm N/A Seal Guides
69.22 X 6.99 B-90 N/A
124626
N/A Metric Standard O-Ring N/A Buna N/A 411 N/A 6.99 mm N/A 90 N/A 69.22 mm N/A Seal Guides
72.39 X 6.99 B-70 N/A
124627
N/A Metric Standard O-Ring N/A Buna N/A 412 N/A 6.99 mm N/A 70 N/A 72.39 mm N/A Seal Guides
72.39 X 6.99 B-90 N/A
124628
N/A Metric Standard O-Ring N/A Buna N/A 412 N/A 6.99 mm N/A 90 N/A 72.39 mm N/A Seal Guides
75.57 X 6.99 B-70 N/A
124629
N/A Metric Standard O-Ring N/A Buna N/A 413 N/A 6.99 mm N/A 70 N/A 75.57 mm N/A Seal Guides
75.57 X 6.99 B-90 N/A
124630
N/A Metric Standard O-Ring N/A Buna N/A 413 N/A 6.99 mm N/A 90 N/A 75.57 mm N/A Seal Guides
78.74 X 6.99 B-70 N/A
124631
N/A Metric Standard O-Ring N/A Buna N/A 414 N/A 6.99 mm N/A 70 N/A 78.74 mm N/A Seal Guides
78.74 X 6.99 B-90 N/A
124632
N/A Metric Standard O-Ring N/A Buna N/A 414 N/A 6.99 mm N/A 90 N/A 78.74 mm N/A Seal Guides
81.92 X 6.99 B-70 N/A
124633
N/A Metric Standard O-Ring N/A Buna N/A 415 N/A 6.99 mm N/A 70 N/A 81.92 mm N/A Seal Guides
81.92 X 6.99 B-90 N/A
124634
N/A Metric Standard O-Ring N/A Buna N/A 415 N/A 6.99 mm N/A 90 N/A 81.92 mm N/A Seal Guides
85.09 X 6.99 B-70 N/A
124635
N/A Metric Standard O-Ring N/A Buna N/A 416 N/A 6.99 mm N/A 70 N/A 85.09 mm N/A Seal Guides
Unit of Measure
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