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
5.1 X 1.6 B-70	N/A 117571	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 70	N/A 5.10 mm	N/A Seal Guides
5.1 X 1.6 B-90	N/A 117572	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 90	N/A 5.10 mm	N/A Seal Guides
6.1 X 1.6 B-70	N/A 117573	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 70	N/A 6.10 mm	N/A Seal Guides
6.1 X 1.6 B-90	N/A 117574	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 90	N/A 6.10 mm	N/A Seal Guides
7.1 X 1.6 B-70	N/A 117575	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 70	N/A 7.10 mm	N/A Seal Guides
7.1 X 1.6 B-90	N/A 117576	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 90	N/A 7.10 mm	N/A Seal Guides
8.1 X 1.6 B-70	N/A 117577	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 70	N/A 8.10 mm	N/A Seal Guides
8.1 X 1.6 B-90	N/A 117578	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 90	N/A 8.10 mm	N/A Seal Guides
9.1 X 1.6 B-70	N/A 117579	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 70	N/A 9.10 mm	N/A Seal Guides
9.1 X 1.6 B-90	N/A 117580	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 90	N/A 9.10 mm	N/A Seal Guides
10.1 X 1.6 B-70	N/A 117581	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 70	N/A 10.10 mm	N/A Seal Guides
10.1 X 1.6 B-90	N/A 117582	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 90	N/A 10.10 mm	N/A Seal Guides
11.1 X 1.6 B-70	N/A 117583	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 70	N/A 11.10 mm	N/A Seal Guides
11.1 X 1.6 B-90	N/A 117584	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 90	N/A 11.10 mm	N/A Seal Guides
12.1 X 1.6 B-70	N/A 117585	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 70	N/A 12.10 mm	N/A Seal Guides
12.1 X 1.6 B-90	N/A 117586	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 90	N/A 12.10 mm	N/A Seal Guides
13.1 X 1.6 B-70	N/A 117587	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 70	N/A 13.10 mm	N/A Seal Guides
13.1 X 1.6 B-90	N/A 117588	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 90	N/A 13.10 mm	N/A Seal Guides
14.1 X 1.6 B-70	N/A 117589	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 70	N/A 14.10 mm	N/A Seal Guides
14.1 X 1.6 B-90	N/A 117590	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 90	N/A 14.10 mm	N/A Seal Guides
15.1 X 1.6 B-70	N/A 117591	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 70	N/A 15.10 mm	N/A Seal Guides
15.1 X 1.6 B-90	N/A 117592	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 90	N/A 15.10 mm	N/A Seal Guides
16.1 X 1.6 B-70	N/A 117593	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 70	N/A 16.10 mm	N/A Seal Guides
16.1 X 1.6 B-90	N/A 117594	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 90	N/A 16.10 mm	N/A Seal Guides
17.1 X 1.6 B-70	N/A 117595	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 70	N/A 17.10 mm	N/A Seal Guides

N/A
117571

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 70

N/A 5.10 mm

N/A Seal Guides

5.1 X 1.6 B-90

N/A
117572

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 90

N/A 5.10 mm

N/A Seal Guides

6.1 X 1.6 B-70

N/A
117573

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 70

N/A 6.10 mm

N/A Seal Guides

6.1 X 1.6 B-90

N/A
117574

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 90

N/A 6.10 mm

N/A Seal Guides

7.1 X 1.6 B-70

N/A
117575

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 70

N/A 7.10 mm

N/A Seal Guides

7.1 X 1.6 B-90

N/A
117576

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 90

N/A 7.10 mm

N/A Seal Guides

8.1 X 1.6 B-70

N/A
117577

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 70

N/A 8.10 mm

N/A Seal Guides

8.1 X 1.6 B-90

N/A
117578

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 90

N/A 8.10 mm

N/A Seal Guides

9.1 X 1.6 B-70

N/A
117579

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 70

N/A 9.10 mm

N/A Seal Guides

9.1 X 1.6 B-90

N/A
117580

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 90

N/A 9.10 mm

N/A Seal Guides

10.1 X 1.6 B-70

N/A
117581

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 70

N/A 10.10 mm

N/A Seal Guides

10.1 X 1.6 B-90

N/A
117582

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 90

N/A 10.10 mm

N/A Seal Guides

11.1 X 1.6 B-70

N/A
117583

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 70

N/A 11.10 mm

N/A Seal Guides

11.1 X 1.6 B-90

N/A
117584

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 90

N/A 11.10 mm

N/A Seal Guides

12.1 X 1.6 B-70

N/A
117585

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 70

N/A 12.10 mm

N/A Seal Guides

12.1 X 1.6 B-90

N/A
117586

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 90

N/A 12.10 mm

N/A Seal Guides

13.1 X 1.6 B-70

N/A
117587

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 70

N/A 13.10 mm

N/A Seal Guides

13.1 X 1.6 B-90

N/A
117588

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 90

N/A 13.10 mm

N/A Seal Guides

14.1 X 1.6 B-70

N/A
117589

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 70

N/A 14.10 mm

N/A Seal Guides

14.1 X 1.6 B-90

N/A
117590

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 90

N/A 14.10 mm

N/A Seal Guides

15.1 X 1.6 B-70

N/A
117591

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 70

N/A 15.10 mm

N/A Seal Guides

15.1 X 1.6 B-90

N/A
117592

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 90

N/A 15.10 mm

N/A Seal Guides

16.1 X 1.6 B-70

N/A
117593

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 70

N/A 16.10 mm

N/A Seal Guides

16.1 X 1.6 B-90

N/A
117594

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 90

N/A 16.10 mm

N/A Seal Guides

17.1 X 1.6 B-70

N/A
117595

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 70

N/A 17.10 mm

N/A Seal Guides