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
17x3.50B70	N/A 119943	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 70	N/A 17.00 mm
17 X 3.5 B-90	N/A 119944	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 90	N/A 17.00 mm
17.5 X 3.5 B-70	N/A 119945	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 70	N/A 17.50 mm
17.5 X 3.5 B-90	N/A 119946	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 90	N/A 17.50 mm
18x3.50B70	N/A 119947	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 70	N/A 18.00 mm
18 X 3.5 B-90	N/A 119948	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 90	N/A 18.00 mm
19x3.50B70	N/A 119949	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 70	N/A 19.00 mm
19 X 3.5 B-90	N/A 119950	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 90	N/A 19.00 mm
20x3.50B70	N/A 119951	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 70	N/A 20.00 mm
20 X 3.5 B-90	N/A 119952	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 90	N/A 20.00 mm
21x3.50B70	N/A 119953	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 70	N/A 21.00 mm
21 X 3.5 B-90	N/A 119954	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 90	N/A 21.00 mm
21.7x3.50B70	N/A 119955	N/A Metric Standard O-Ring	N/A Buna	N/A P22A	N/A 3.50 mm	N/A 70	N/A 21.70 mm
21.7 X 3.5 B-90	N/A 119956	N/A Metric Standard O-Ring	N/A Buna	N/A P22A	N/A 3.50 mm	N/A 90	N/A 21.70 mm
22x3.50B70	N/A 119957	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 70	N/A 22.00 mm
22 X 3.5 B-90	N/A 119958	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 90	N/A 22.00 mm
22.1x3.50B70	N/A 119959	N/A Metric Standard O-Ring	N/A Buna	N/A P22.4	N/A 3.50 mm	N/A 70	N/A 22.10 mm
22.1 X 3.5 B-90	N/A 119960	N/A Metric Standard O-Ring	N/A Buna	N/A P22.4	N/A 3.50 mm	N/A 90	N/A 22.10 mm
23x3.50B70	N/A 119961	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 70	N/A 23.00 mm
23 X 3.5 B-90	N/A 119962	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 90	N/A 23.00 mm
23.7x3.50B70	N/A 119963	N/A Metric Standard O-Ring	N/A Buna	N/A P24	N/A 3.50 mm	N/A 70	N/A 23.70 mm
23.7 X 3.5 B-90	N/A 119964	N/A Metric Standard O-Ring	N/A Buna	N/A P24	N/A 3.50 mm	N/A 90	N/A 23.70 mm
24x3.50B70	N/A 119965	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 70	N/A 24.00 mm
24 X 3.5 B-90	N/A 119966	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 90	N/A 24.00 mm
24.7x3.50B70	N/A 119967	N/A Metric Standard O-Ring	N/A Buna	N/A P25	N/A 3.50 mm	N/A 70	N/A 24.70 mm

N/A
119943

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 70

N/A 17.00 mm

17 X 3.5 B-90

N/A
119944

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 90

N/A 17.00 mm

17.5 X 3.5 B-70

N/A
119945

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 70

N/A 17.50 mm

17.5 X 3.5 B-90

N/A
119946

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 90

N/A 17.50 mm

18x3.50B70

N/A
119947

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 70

N/A 18.00 mm

18 X 3.5 B-90

N/A
119948

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 90

N/A 18.00 mm

19x3.50B70

N/A
119949

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 70

N/A 19.00 mm

19 X 3.5 B-90

N/A
119950

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 90

N/A 19.00 mm

20x3.50B70

N/A
119951

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 70

N/A 20.00 mm

20 X 3.5 B-90

N/A
119952

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 90

N/A 20.00 mm

21x3.50B70

N/A
119953

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 70

N/A 21.00 mm

21 X 3.5 B-90

N/A
119954

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 90

N/A 21.00 mm

21.7x3.50B70

N/A
119955

N/A Metric Standard O-Ring

N/A Buna

N/A P22A

N/A 3.50 mm

N/A 70

N/A 21.70 mm

21.7 X 3.5 B-90

N/A
119956

N/A Metric Standard O-Ring

N/A Buna

N/A P22A

N/A 3.50 mm

N/A 90

N/A 21.70 mm

22x3.50B70

N/A
119957

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 70

N/A 22.00 mm

22 X 3.5 B-90

N/A
119958

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 90

N/A 22.00 mm

22.1x3.50B70

N/A
119959

N/A Metric Standard O-Ring

N/A Buna

N/A P22.4

N/A 3.50 mm

N/A 70

N/A 22.10 mm

22.1 X 3.5 B-90

N/A
119960

N/A Metric Standard O-Ring

N/A Buna

N/A P22.4

N/A 3.50 mm

N/A 90

N/A 22.10 mm

23x3.50B70

N/A
119961

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 70

N/A 23.00 mm

23 X 3.5 B-90

N/A
119962

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 90

N/A 23.00 mm

23.7x3.50B70

N/A
119963

N/A Metric Standard O-Ring

N/A Buna

N/A P24

N/A 3.50 mm

N/A 70

N/A 23.70 mm

23.7 X 3.5 B-90

N/A
119964

N/A Metric Standard O-Ring

N/A Buna

N/A P24

N/A 3.50 mm

N/A 90

N/A 23.70 mm

24x3.50B70

N/A
119965

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 70

N/A 24.00 mm

24 X 3.5 B-90

N/A
119966

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 90

N/A 24.00 mm

24.7x3.50B70

N/A
119967

N/A Metric Standard O-Ring

N/A Buna

N/A P25

N/A 3.50 mm

N/A 70

N/A 24.70 mm