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
1.8 X 0.7 B-70	N/A 117071	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 0.70 mm	N/A 70	N/A 1.80 mm	N/A Seal Guides
1.8 X 0.7 B-90	N/A 117072	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 0.70 mm	N/A 90	N/A 1.80 mm	N/A Seal Guides
22.8 X 0.8 B-70	N/A 117073	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 0.80 mm	N/A 70	N/A 22.80 mm	N/A Seal Guides
22.8 X 0.8 B-90	N/A 117074	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 0.80 mm	N/A 90	N/A 22.80 mm	N/A Seal Guides
5.36 X 0.81 B-70	N/A 117075	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 0.81 mm	N/A 70	N/A 5.36 mm	N/A Seal Guides
5.36 X 0.81 B-90	N/A 117076	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 0.81 mm	N/A 90	N/A 5.36 mm	N/A Seal Guides
6.1 X 0.84 B-70	N/A 117077	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 0.84 mm	N/A 70	N/A 6.10 mm	N/A Seal Guides
6.1 X 0.84 B-90	N/A 117078	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 0.84 mm	N/A 90	N/A 6.10 mm	N/A Seal Guides
22.8 X 0.9 B-70	N/A 117079	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 0.90 mm	N/A 70	N/A 22.80 mm	N/A Seal Guides
22.8 X 0.9 B-90	N/A 117080	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 0.90 mm	N/A 90	N/A 22.80 mm	N/A Seal Guides
2.54 X 0.9 B-70	N/A 117081	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 0.90 mm	N/A 70	N/A 2.54 mm	N/A Seal Guides
2.54 X 0.9 B-90	N/A 117082	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 0.90 mm	N/A 90	N/A 2.54 mm	N/A Seal Guides
1.15 X 1 B-70	N/A 117083	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.00 mm	N/A 70	N/A 1.15 mm	N/A Seal Guides
1.15 X 1 B-90	N/A 117084	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.00 mm	N/A 90	N/A 1.15 mm	N/A Seal Guides
1.25 X 1 B-70	N/A 117085	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.00 mm	N/A 70	N/A 1.25 mm	N/A Seal Guides
1.25 X 1 B-90	N/A 117086	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.00 mm	N/A 90	N/A 1.25 mm	N/A Seal Guides
1.5 X 1 B-70	N/A 117087	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.00 mm	N/A 70	N/A 1.50 mm	N/A Seal Guides
1.5 X 1 B-90	N/A 117088	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.00 mm	N/A 90	N/A 1.50 mm	N/A Seal Guides
1.8 X 1 B-70	N/A 117089	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.00 mm	N/A 70	N/A 1.80 mm	N/A Seal Guides
1.8 X 1 B-90	N/A 117090	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.00 mm	N/A 90	N/A 1.80 mm	N/A Seal Guides
2 X 1 B-70	N/A 117091	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.00 mm	N/A 70	N/A 2.00 mm	N/A Seal Guides
2 X 1 B-90	N/A 117092	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.00 mm	N/A 90	N/A 2.00 mm	N/A Seal Guides
2.5 X 1 B-70	N/A 117093	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.00 mm	N/A 70	N/A 2.50 mm	N/A Seal Guides
2.5 X 1 B-90	N/A 117094	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.00 mm	N/A 90	N/A 2.50 mm	N/A Seal Guides
2.7 X 1 B-70	N/A 117095	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.00 mm	N/A 70	N/A 2.70 mm	N/A Seal Guides

N/A
117071

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 0.70 mm

N/A 70

N/A 1.80 mm

N/A Seal Guides

1.8 X 0.7 B-90

N/A
117072

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 0.70 mm

N/A 90

N/A 1.80 mm

N/A Seal Guides

22.8 X 0.8 B-70

N/A
117073

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 0.80 mm

N/A 70

N/A 22.80 mm

N/A Seal Guides

22.8 X 0.8 B-90

N/A
117074

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 0.80 mm

N/A 90

N/A 22.80 mm

N/A Seal Guides

5.36 X 0.81 B-70

N/A
117075

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 0.81 mm

N/A 70

N/A 5.36 mm

N/A Seal Guides

5.36 X 0.81 B-90

N/A
117076

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 0.81 mm

N/A 90

N/A 5.36 mm

N/A Seal Guides

6.1 X 0.84 B-70

N/A
117077

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 0.84 mm

N/A 70

N/A 6.10 mm

N/A Seal Guides

6.1 X 0.84 B-90

N/A
117078

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 0.84 mm

N/A 90

N/A 6.10 mm

N/A Seal Guides

22.8 X 0.9 B-70

N/A
117079

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 0.90 mm

N/A 70

N/A 22.80 mm

N/A Seal Guides

22.8 X 0.9 B-90

N/A
117080

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 0.90 mm

N/A 90

N/A 22.80 mm

N/A Seal Guides

2.54 X 0.9 B-70

N/A
117081

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 0.90 mm

N/A 70

N/A 2.54 mm

N/A Seal Guides

2.54 X 0.9 B-90

N/A
117082

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 0.90 mm

N/A 90

N/A 2.54 mm

N/A Seal Guides

1.15 X 1 B-70

N/A
117083

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.00 mm

N/A 70

N/A 1.15 mm

N/A Seal Guides

1.15 X 1 B-90

N/A
117084

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.00 mm

N/A 90

N/A 1.15 mm

N/A Seal Guides

1.25 X 1 B-70

N/A
117085

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.00 mm

N/A 70

N/A 1.25 mm

N/A Seal Guides

1.25 X 1 B-90

N/A
117086

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.00 mm

N/A 90

N/A 1.25 mm

N/A Seal Guides

1.5 X 1 B-70

N/A
117087

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.00 mm

N/A 70

N/A 1.50 mm

N/A Seal Guides

1.5 X 1 B-90

N/A
117088

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.00 mm

N/A 90

N/A 1.50 mm

N/A Seal Guides

1.8 X 1 B-70

N/A
117089

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.00 mm

N/A 70

N/A 1.80 mm

N/A Seal Guides

1.8 X 1 B-90

N/A
117090

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.00 mm

N/A 90

N/A 1.80 mm

N/A Seal Guides

2 X 1 B-70

N/A
117091

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.00 mm

N/A 70

N/A 2.00 mm

N/A Seal Guides

2 X 1 B-90

N/A
117092

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.00 mm

N/A 90

N/A 2.00 mm

N/A Seal Guides

2.5 X 1 B-70

N/A
117093

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.00 mm

N/A 70

N/A 2.50 mm

N/A Seal Guides

2.5 X 1 B-90

N/A
117094

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.00 mm

N/A 90

N/A 2.50 mm

N/A Seal Guides

2.7 X 1 B-70

N/A
117095

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.00 mm

N/A 70

N/A 2.70 mm

N/A Seal Guides