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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
94.62 X 5.33 B-90 N/A
123528
N/A Metric Standard O-Ring N/A Buna N/A 343 N/A 5.33 mm N/A 90 N/A 94.62 mm N/A Seal Guides
97.79 X 5.33 B-70 N/A
123529
N/A Metric Standard O-Ring N/A Buna N/A 344 N/A 5.33 mm N/A 70 N/A 97.79 mm N/A Seal Guides
97.79 X 5.33 B-90 N/A
123530
N/A Metric Standard O-Ring N/A Buna N/A 344 N/A 5.33 mm N/A 90 N/A 97.79 mm N/A Seal Guides
100 X 5.33 B-70 N/A
123531
N/A Metric Standard O-Ring N/A Buna N/A BS622 N/A 5.33 mm N/A 70 N/A 100.00 mm N/A Seal Guides
100 X 5.33 B-90 N/A
123532
N/A Metric Standard O-Ring N/A Buna N/A BS622 N/A 5.33 mm N/A 90 N/A 100.00 mm N/A Seal Guides
100.97 X 5.33 B-70 N/A
123533
N/A Metric Standard O-Ring N/A Buna N/A 345 N/A 5.33 mm N/A 70 N/A 100.97 mm N/A Seal Guides
100.97 X 5.33 B-90 N/A
123534
N/A Metric Standard O-Ring N/A Buna N/A 345 N/A 5.33 mm N/A 90 N/A 100.97 mm N/A Seal Guides
104.14 X 5.33 B-70 N/A
123535
N/A Metric Standard O-Ring N/A Buna N/A 346 N/A 5.33 mm N/A 70 N/A 104.14 mm N/A Seal Guides
104.14 X 5.33 B-90 N/A
123536
N/A Metric Standard O-Ring N/A Buna N/A 346 N/A 5.33 mm N/A 90 N/A 104.14 mm N/A Seal Guides
107.32 X 5.33 B-70 N/A
123537
N/A Metric Standard O-Ring N/A Buna N/A 347 N/A 5.33 mm N/A 70 N/A 107.32 mm N/A Seal Guides
107.32 X 5.33 B-90 N/A
123538
N/A Metric Standard O-Ring N/A Buna N/A 347 N/A 5.33 mm N/A 90 N/A 107.32 mm N/A Seal Guides
109.54 X 5.33 B-70 N/A
123539
N/A Metric Standard O-Ring N/A Buna N/A BS623 N/A 5.33 mm N/A 70 N/A 109.54 mm N/A Seal Guides
109.54 X 5.33 B-90 N/A
123540
N/A Metric Standard O-Ring N/A Buna N/A BS623 N/A 5.33 mm N/A 90 N/A 109.54 mm N/A Seal Guides
110.49 X 5.33 B-70 N/A
123541
N/A Metric Standard O-Ring N/A Buna N/A 348 N/A 5.33 mm N/A 70 N/A 110.49 mm N/A Seal Guides
110.49 X 5.33 B-90 N/A
123542
N/A Metric Standard O-Ring N/A Buna N/A 348 N/A 5.33 mm N/A 90 N/A 110.49 mm N/A Seal Guides
113.67 X 5.33 B-70 N/A
123543
N/A Metric Standard O-Ring N/A Buna N/A 349 N/A 5.33 mm N/A 70 N/A 113.67 mm N/A Seal Guides
113.67 X 5.33 B-90 N/A
123544
N/A Metric Standard O-Ring N/A Buna N/A 349 N/A 5.33 mm N/A 90 N/A 113.67 mm N/A Seal Guides
116.84 X 5.33 B-70 N/A
123545
N/A Metric Standard O-Ring N/A Buna N/A 350 N/A 5.33 mm N/A 70 N/A 116.84 mm N/A Seal Guides
116.84 X 5.33 B-90 N/A
123546
N/A Metric Standard O-Ring N/A Buna N/A 350 N/A 5.33 mm N/A 90 N/A 116.84 mm N/A Seal Guides
117.48 X 5.33 B-70 N/A
123547
N/A Metric Standard O-Ring N/A Buna N/A BS860 N/A 5.33 mm N/A 70 N/A 117.48 mm N/A Seal Guides
117.48 X 5.33 B-90 N/A
123548
N/A Metric Standard O-Ring N/A Buna N/A BS860 N/A 5.33 mm N/A 90 N/A 117.48 mm N/A Seal Guides
120.02 X 5.33 B-70 N/A
123549
N/A Metric Standard O-Ring N/A Buna N/A 351 N/A 5.33 mm N/A 70 N/A 120.02 mm N/A Seal Guides
120.02 X 5.33 B-90 N/A
123550
N/A Metric Standard O-Ring N/A Buna N/A 351 N/A 5.33 mm N/A 90 N/A 120.02 mm N/A Seal Guides
120.65 X 5.33 B-70 N/A
123551
N/A Metric Standard O-Ring N/A Buna N/A BS861 N/A 5.33 mm N/A 70 N/A 120.65 mm N/A Seal Guides
120.65 X 5.33 B-90 N/A
123552
N/A Metric Standard O-Ring N/A Buna N/A BS861 N/A 5.33 mm N/A 90 N/A 120.65 mm N/A Seal Guides
Unit of Measure
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