Metric Buna 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.

Item #	IntegrationID	Type	Material	Cross Reference	Cross Section Width	Durometer	Inside Diameter	Product Guides
422 X 6 B-90	N/A 124536	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 422.00 mm	N/A Seal Guides
425.5 X 6 B-70	N/A 124537	N/A Metric Standard O-Ring	N/A Buna	N/A V430	N/A 6.00 mm	N/A 70	N/A 425.50 mm	N/A Seal Guides
425.5 X 6 B-90	N/A 124538	N/A Metric Standard O-Ring	N/A Buna	N/A V430	N/A 6.00 mm	N/A 90	N/A 425.50 mm	N/A Seal Guides
429x6.00B70	N/A 124539	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 429.00 mm	N/A Seal Guides
429 X 6 B-90	N/A 124540	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 429.00 mm	N/A Seal Guides
446 X 6 B-70	N/A 124541	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 446.00 mm	N/A Seal Guides
446 X 6 B-90	N/A 124542	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 446.00 mm	N/A Seal Guides
448 X 6 B-70	N/A 124543	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 448.00 mm	N/A Seal Guides
448 X 6 B-90	N/A 124544	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 448.00 mm	N/A Seal Guides
450 X 6 B-70	N/A 124545	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 450.00 mm	N/A Seal Guides
450 X 6 B-90	N/A 124546	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 450.00 mm	N/A Seal Guides
453 X 6 B-70	N/A 124547	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 453.00 mm	N/A Seal Guides
453 X 6 B-90	N/A 124548	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 453.00 mm	N/A Seal Guides
470 X 6 B-70	N/A 124549	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 470.00 mm	N/A Seal Guides
470 X 6 B-90	N/A 124550	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 470.00 mm	N/A Seal Guides
478 X 6 B-70	N/A 124551	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 478.00 mm	N/A Seal Guides
478 X 6 B-90	N/A 124552	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 478.00 mm	N/A Seal Guides
480x6.00B70	N/A 124553	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 480.00 mm	N/A Seal Guides
480 X 6 B-90	N/A 124554	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 480.00 mm	N/A Seal Guides
483 X 6 B-70	N/A 124555	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 483.00 mm	N/A Seal Guides
483 X 6 B-90	N/A 124556	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 483.00 mm	N/A Seal Guides
486 X 6 B-70	N/A 124557	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 486.00 mm	N/A Seal Guides
486 X 6 B-90	N/A 124558	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 486.00 mm	N/A Seal Guides
489 X 6 B-70	N/A 124559	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 489.00 mm	N/A Seal Guides
489 X 6 B-90	N/A 124560	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 489.00 mm	N/A Seal Guides

N/A
124536

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 422.00 mm

N/A Seal Guides

425.5 X 6 B-70

N/A
124537

N/A Metric Standard O-Ring

N/A Buna

N/A V430

N/A 6.00 mm

N/A 70

N/A 425.50 mm

N/A Seal Guides

425.5 X 6 B-90

N/A
124538

N/A Metric Standard O-Ring

N/A Buna

N/A V430

N/A 6.00 mm

N/A 90

N/A 425.50 mm

N/A Seal Guides

429x6.00B70

N/A
124539

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 429.00 mm

N/A Seal Guides

429 X 6 B-90

N/A
124540

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 429.00 mm

N/A Seal Guides

446 X 6 B-70

N/A
124541

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 446.00 mm

N/A Seal Guides

446 X 6 B-90

N/A
124542

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 446.00 mm

N/A Seal Guides

448 X 6 B-70

N/A
124543

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 448.00 mm

N/A Seal Guides

448 X 6 B-90

N/A
124544

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 448.00 mm

N/A Seal Guides

450 X 6 B-70

N/A
124545

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 450.00 mm

N/A Seal Guides

450 X 6 B-90

N/A
124546

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 450.00 mm

N/A Seal Guides

453 X 6 B-70

N/A
124547

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 453.00 mm

N/A Seal Guides

453 X 6 B-90

N/A
124548

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 453.00 mm

N/A Seal Guides

470 X 6 B-70

N/A
124549

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 470.00 mm

N/A Seal Guides

470 X 6 B-90

N/A
124550

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 470.00 mm

N/A Seal Guides

478 X 6 B-70

N/A
124551

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 478.00 mm

N/A Seal Guides

478 X 6 B-90

N/A
124552

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 478.00 mm

N/A Seal Guides

480x6.00B70

N/A
124553

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 480.00 mm

N/A Seal Guides

480 X 6 B-90

N/A
124554

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 480.00 mm

N/A Seal Guides

483 X 6 B-70

N/A
124555

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 483.00 mm

N/A Seal Guides

483 X 6 B-90

N/A
124556

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 483.00 mm

N/A Seal Guides

486 X 6 B-70

N/A
124557

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 486.00 mm

N/A Seal Guides

486 X 6 B-90

N/A
124558

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 486.00 mm

N/A Seal Guides

489 X 6 B-70

N/A
124559

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 489.00 mm

N/A Seal Guides

489 X 6 B-90

N/A
124560

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 489.00 mm

N/A Seal Guides