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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
189.87 X 6.99 B-70 N/A
124711
N/A Metric Standard O-Ring N/A Buna N/A 443 N/A 6.99 mm N/A 70 N/A 189.87 mm N/A Seal Guides
189.87 X 6.99 B-90 N/A
124712
N/A Metric Standard O-Ring N/A Buna N/A 443 N/A 6.99 mm N/A 90 N/A 189.87 mm N/A Seal Guides
193.7 X 6.99 B-70 N/A
124713
N/A Metric Standard O-Ring N/A Buna N/A BS884 N/A 6.99 mm N/A 70 N/A 193.70 mm N/A Seal Guides
193.7 X 6.99 B-90 N/A
124714
N/A Metric Standard O-Ring N/A Buna N/A BS884 N/A 6.99 mm N/A 90 N/A 193.70 mm N/A Seal Guides
196.22 X 6.99 B-70 N/A
124715
N/A Metric Standard O-Ring N/A Buna N/A 444 N/A 6.99 mm N/A 70 N/A 196.22 mm N/A Seal Guides
196.22 X 6.99 B-90 N/A
124716
N/A Metric Standard O-Ring N/A Buna N/A 444 N/A 6.99 mm N/A 90 N/A 196.22 mm N/A Seal Guides
200 X 6.99 B-70 N/A
124717
N/A Metric Standard O-Ring N/A Buna N/A BS886 N/A 6.99 mm N/A 70 N/A 200.00 mm N/A Seal Guides
200 X 6.99 B-90 N/A
124718
N/A Metric Standard O-Ring N/A Buna N/A BS886 N/A 6.99 mm N/A 90 N/A 200.00 mm N/A Seal Guides
202.57 X 6.99 B-70 N/A
124719
N/A Metric Standard O-Ring N/A Buna N/A 445 N/A 6.99 mm N/A 70 N/A 202.57 mm N/A Seal Guides
202.57 X 6.99 B-90 N/A
124720
N/A Metric Standard O-Ring N/A Buna N/A 445 N/A 6.99 mm N/A 90 N/A 202.57 mm N/A Seal Guides
208.92 X 6.99 B-70 N/A
124721
N/A Metric Standard O-Ring N/A Buna N/A BS674 N/A 6.99 mm N/A 70 N/A 208.92 mm N/A Seal Guides
208.92 X 6.99 B-90 N/A
124722
N/A Metric Standard O-Ring N/A Buna N/A BS674 N/A 6.99 mm N/A 90 N/A 208.92 mm N/A Seal Guides
215.27 X 6.99 B-70 N/A
124723
N/A Metric Standard O-Ring N/A Buna N/A 446 N/A 6.99 mm N/A 70 N/A 215.27 mm N/A Seal Guides
215.27 X 6.99 B-90 N/A
124724
N/A Metric Standard O-Ring N/A Buna N/A 446 N/A 6.99 mm N/A 90 N/A 215.27 mm N/A Seal Guides
221.62 X 6.99 B-70 N/A
124725
N/A Metric Standard O-Ring N/A Buna N/A BS676 N/A 6.99 mm N/A 70 N/A 221.62 mm N/A Seal Guides
221.62 X 6.99 B-90 N/A
124726
N/A Metric Standard O-Ring N/A Buna N/A BS676 N/A 6.99 mm N/A 90 N/A 221.62 mm N/A Seal Guides
227.97 X 6.99 B-70 N/A
124727
N/A Metric Standard O-Ring N/A Buna N/A 447 N/A 6.99 mm N/A 70 N/A 227.97 mm N/A Seal Guides
227.97 X 6.99 B-90 N/A
124728
N/A Metric Standard O-Ring N/A Buna N/A 447 N/A 6.99 mm N/A 90 N/A 227.97 mm N/A Seal Guides
234.32 X 6.99 B-70 N/A
124729
N/A Metric Standard O-Ring N/A Buna N/A BS678 N/A 6.99 mm N/A 70 N/A 234.32 mm N/A Seal Guides
234.32 X 6.99 B-90 N/A
124730
N/A Metric Standard O-Ring N/A Buna N/A BS678 N/A 6.99 mm N/A 90 N/A 234.32 mm N/A Seal Guides
240.67 X 6.99 B-70 N/A
124731
N/A Metric Standard O-Ring N/A Buna N/A 448 N/A 6.99 mm N/A 70 N/A 240.67 mm N/A Seal Guides
240.67 X 6.99 B-90 N/A
124732
N/A Metric Standard O-Ring N/A Buna N/A 448 N/A 6.99 mm N/A 90 N/A 240.67 mm N/A Seal Guides
247 X 6.99 B-70 N/A
124733
N/A Metric Standard O-Ring N/A Buna N/A BS680 N/A 6.99 mm N/A 70 N/A 247.00 mm N/A Seal Guides
247 X 6.99 B-90 N/A
124734
N/A Metric Standard O-Ring N/A Buna N/A BS680 N/A 6.99 mm N/A 90 N/A 247.00 mm N/A Seal Guides
253.37 X 6.99 B-70 N/A
124735
N/A Metric Standard O-Ring N/A Buna N/A 4491 N/A 6.99 mm N/A 70 N/A 253.37 mm N/A Seal Guides
Unit of Measure
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