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
86 X 1.6 B-70	N/A 117621	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 70	N/A 86.00 mm
86 X 1.6 B-90	N/A 117622	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 90	N/A 86.00 mm
96.6 X 1.6 B-70	N/A 117623	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 70	N/A 96.60 mm
96.6 X 1.6 B-90	N/A 117624	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 90	N/A 96.60 mm
115 X 1.6 B-70	N/A 117625	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 70	N/A 115.00 mm
115 X 1.6 B-90	N/A 117626	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.60 mm	N/A 90	N/A 115.00 mm
6.07 X 1.63 B-70	N/A 117627	N/A Metric Standard O-Ring	N/A Buna	N/A 902	N/A 1.63 mm	N/A 70	N/A 6.07 mm
6.07 X 1.63 B-90	N/A 117628	N/A Metric Standard O-Ring	N/A Buna	N/A 902	N/A 1.63 mm	N/A 90	N/A 6.07 mm
7.65 X 1.63 B-70	N/A 117629	N/A Metric Standard O-Ring	N/A Buna	N/A 903	N/A 1.63 mm	N/A 70	N/A 7.65 mm
7.65 X 1.63 B-90	N/A 117630	N/A Metric Standard O-Ring	N/A Buna	N/A 903	N/A 1.63 mm	N/A 90	N/A 7.65 mm
1.78 X 1.78 B-70	N/A 117631	N/A Metric Standard O-Ring	N/A Buna	N/A 4	N/A 1.78 mm	N/A 70	N/A 1.78 mm
1.78 X 1.78 B-90	N/A 117632	N/A Metric Standard O-Ring	N/A Buna	N/A 4	N/A 1.78 mm	N/A 90	N/A 1.78 mm
2.57 X 1.78 B-70	N/A 117633	N/A Metric Standard O-Ring	N/A Buna	N/A 5	N/A 1.78 mm	N/A 70	N/A 2.57 mm
2.57 X 1.78 B-90	N/A 117634	N/A Metric Standard O-Ring	N/A Buna	N/A 5	N/A 1.78 mm	N/A 90	N/A 2.57 mm
2.9 X 1.78 B-70	N/A 117635	N/A Metric Standard O-Ring	N/A Buna	N/A 6	N/A 1.78 mm	N/A 70	N/A 2.90 mm
2.9 X 1.78 B-90	N/A 117636	N/A Metric Standard O-Ring	N/A Buna	N/A 6	N/A 1.78 mm	N/A 90	N/A 2.90 mm
3.17 X 1.78 B-70	N/A 117637	N/A Metric Standard O-Ring	N/A Buna	N/A BS801	N/A 1.78 mm	N/A 70	N/A 3.17 mm
3.17 X 1.78 B-90	N/A 117638	N/A Metric Standard O-Ring	N/A Buna	N/A BS801	N/A 1.78 mm	N/A 90	N/A 3.17 mm
3.68 X 1.78 B-70	N/A 117639	N/A Metric Standard O-Ring	N/A Buna	N/A 7	N/A 1.78 mm	N/A 70	N/A 3.68 mm
3.68 X 1.78 B-90	N/A 117640	N/A Metric Standard O-Ring	N/A Buna	N/A 7	N/A 1.78 mm	N/A 90	N/A 3.68 mm
4.47 X 1.78 B-70	N/A 117641	N/A Metric Standard O-Ring	N/A Buna	N/A 8	N/A 1.78 mm	N/A 70	N/A 4.47 mm
4.47 X 1.78 B-90	N/A 117642	N/A Metric Standard O-Ring	N/A Buna	N/A 8	N/A 1.78 mm	N/A 90	N/A 4.47 mm
476 X 1.78 B-70	N/A 117643	N/A Metric Standard O-Ring	N/A Buna	N/A BS802	N/A 1.78 mm	N/A 70	N/A 476.00 mm
476 X 1.78 B-90	N/A 117644	N/A Metric Standard O-Ring	N/A Buna	N/A BS802	N/A 1.78 mm	N/A 90	N/A 476.00 mm
5.28 X 1.78 B-70	N/A 117645	N/A Metric Standard O-Ring	N/A Buna	N/A 9	N/A 1.78 mm	N/A 70	N/A 5.28 mm

N/A
117621

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 70

N/A 86.00 mm

86 X 1.6 B-90

N/A
117622

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 90

N/A 86.00 mm

96.6 X 1.6 B-70

N/A
117623

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 70

N/A 96.60 mm

96.6 X 1.6 B-90

N/A
117624

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 90

N/A 96.60 mm

115 X 1.6 B-70

N/A
117625

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 70

N/A 115.00 mm

115 X 1.6 B-90

N/A
117626

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.60 mm

N/A 90

N/A 115.00 mm

6.07 X 1.63 B-70

N/A
117627

N/A Metric Standard O-Ring

N/A Buna

N/A 902

N/A 1.63 mm

N/A 70

N/A 6.07 mm

6.07 X 1.63 B-90

N/A
117628

N/A Metric Standard O-Ring

N/A Buna

N/A 902

N/A 1.63 mm

N/A 90

N/A 6.07 mm

7.65 X 1.63 B-70

N/A
117629

N/A Metric Standard O-Ring

N/A Buna

N/A 903

N/A 1.63 mm

N/A 70

N/A 7.65 mm

7.65 X 1.63 B-90

N/A
117630

N/A Metric Standard O-Ring

N/A Buna

N/A 903

N/A 1.63 mm

N/A 90

N/A 7.65 mm

1.78 X 1.78 B-70

N/A
117631

N/A Metric Standard O-Ring

N/A Buna

N/A 4

N/A 1.78 mm

N/A 70

N/A 1.78 mm

1.78 X 1.78 B-90

N/A
117632

N/A Metric Standard O-Ring

N/A Buna

N/A 4

N/A 1.78 mm

N/A 90

N/A 1.78 mm

2.57 X 1.78 B-70

N/A
117633

N/A Metric Standard O-Ring

N/A Buna

N/A 5

N/A 1.78 mm

N/A 70

N/A 2.57 mm

2.57 X 1.78 B-90

N/A
117634

N/A Metric Standard O-Ring

N/A Buna

N/A 5

N/A 1.78 mm

N/A 90

N/A 2.57 mm

2.9 X 1.78 B-70

N/A
117635

N/A Metric Standard O-Ring

N/A Buna

N/A 6

N/A 1.78 mm

N/A 70

N/A 2.90 mm

2.9 X 1.78 B-90

N/A
117636

N/A Metric Standard O-Ring

N/A Buna

N/A 6

N/A 1.78 mm

N/A 90

N/A 2.90 mm

3.17 X 1.78 B-70

N/A
117637

N/A Metric Standard O-Ring

N/A Buna

N/A BS801

N/A 1.78 mm

N/A 70

N/A 3.17 mm

3.17 X 1.78 B-90

N/A
117638

N/A Metric Standard O-Ring

N/A Buna

N/A BS801

N/A 1.78 mm

N/A 90

N/A 3.17 mm

3.68 X 1.78 B-70

N/A
117639

N/A Metric Standard O-Ring

N/A Buna

N/A 7

N/A 1.78 mm

N/A 70

N/A 3.68 mm

3.68 X 1.78 B-90

N/A
117640

N/A Metric Standard O-Ring

N/A Buna

N/A 7

N/A 1.78 mm

N/A 90

N/A 3.68 mm

4.47 X 1.78 B-70

N/A
117641

N/A Metric Standard O-Ring

N/A Buna

N/A 8

N/A 1.78 mm

N/A 70

N/A 4.47 mm

4.47 X 1.78 B-90

N/A
117642

N/A Metric Standard O-Ring

N/A Buna

N/A 8

N/A 1.78 mm

N/A 90

N/A 4.47 mm

476 X 1.78 B-70

N/A
117643

N/A Metric Standard O-Ring

N/A Buna

N/A BS802

N/A 1.78 mm

N/A 70

N/A 476.00 mm

476 X 1.78 B-90

N/A
117644

N/A Metric Standard O-Ring

N/A Buna

N/A BS802

N/A 1.78 mm

N/A 90

N/A 476.00 mm

5.28 X 1.78 B-70

N/A
117645

N/A Metric Standard O-Ring

N/A Buna

N/A 9

N/A 1.78 mm

N/A 70

N/A 5.28 mm