• Metric O-Rings

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.

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Cross Section Width (mm)

Durometer

Inside Diameter (mm)

Item #

IntegrationID

Type

Material

Cross Reference

Cross Section Width

Durometer

Inside Diameter

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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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