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
40.94 X 2.62 B-70	N/A 118937	N/A Metric Standard O-Ring	N/A Buna	N/A 130	N/A 2.62 mm	N/A 70	N/A 40.94 mm
40.94 X 2.62 B-90	N/A 118938	N/A Metric Standard O-Ring	N/A Buna	N/A 130	N/A 2.62 mm	N/A 90	N/A 40.94 mm
42.52 X 2.62 B-70	N/A 118939	N/A Metric Standard O-Ring	N/A Buna	N/A 131	N/A 2.62 mm	N/A 70	N/A 42.52 mm
42.52 X 2.62 B-90	N/A 118940	N/A Metric Standard O-Ring	N/A Buna	N/A 131	N/A 2.62 mm	N/A 90	N/A 42.52 mm
44.12 X 2.62 B-70	N/A 118941	N/A Metric Standard O-Ring	N/A Buna	N/A 132	N/A 2.62 mm	N/A 70	N/A 44.12 mm
44.12 X 2.62 B-90	N/A 118942	N/A Metric Standard O-Ring	N/A Buna	N/A 132	N/A 2.62 mm	N/A 90	N/A 44.12 mm
45.69 X 2.62 B-70	N/A 118943	N/A Metric Standard O-Ring	N/A Buna	N/A 133	N/A 2.62 mm	N/A 70	N/A 45.69 mm
45.69 X 2.62 B-90	N/A 118944	N/A Metric Standard O-Ring	N/A Buna	N/A 133	N/A 2.62 mm	N/A 90	N/A 45.69 mm
47.29 X 2.62 B-70	N/A 118945	N/A Metric Standard O-Ring	N/A Buna	N/A 134	N/A 2.62 mm	N/A 70	N/A 47.29 mm
47.29 X 2.62 B-90	N/A 118946	N/A Metric Standard O-Ring	N/A Buna	N/A 134	N/A 2.62 mm	N/A 90	N/A 47.29 mm
48.9 X 2.62 B-70	N/A 118947	N/A Metric Standard O-Ring	N/A Buna	N/A 135	N/A 2.62 mm	N/A 70	N/A 48.90 mm
48.9 X 2.62 B-90	N/A 118948	N/A Metric Standard O-Ring	N/A Buna	N/A 135	N/A 2.62 mm	N/A 90	N/A 48.90 mm
50.47 X 2.62 B-70	N/A 118949	N/A Metric Standard O-Ring	N/A Buna	N/A 136	N/A 2.62 mm	N/A 70	N/A 50.47 mm
50.47 X 2.62 B-90	N/A 118950	N/A Metric Standard O-Ring	N/A Buna	N/A 136	N/A 2.62 mm	N/A 90	N/A 50.47 mm
52.07 X 2.62 B-70	N/A 118951	N/A Metric Standard O-Ring	N/A Buna	N/A 137	N/A 2.62 mm	N/A 70	N/A 52.07 mm
52.07 X 2.62 B-90	N/A 118952	N/A Metric Standard O-Ring	N/A Buna	N/A 137	N/A 2.62 mm	N/A 90	N/A 52.07 mm
53.64 X 2.62 B-70	N/A 118953	N/A Metric Standard O-Ring	N/A Buna	N/A 138	N/A 2.62 mm	N/A 70	N/A 53.64 mm
53.64 X 2.62 B-90	N/A 118954	N/A Metric Standard O-Ring	N/A Buna	N/A 138	N/A 2.62 mm	N/A 90	N/A 53.64 mm
55.25 X 2.62 B-70	N/A 118955	N/A Metric Standard O-Ring	N/A Buna	N/A 139	N/A 2.62 mm	N/A 70	N/A 55.25 mm
55.25 X 2.62 B-90	N/A 118956	N/A Metric Standard O-Ring	N/A Buna	N/A 139	N/A 2.62 mm	N/A 90	N/A 55.25 mm
56.82 X 2.62 B-70	N/A 118957	N/A Metric Standard O-Ring	N/A Buna	N/A 140	N/A 2.62 mm	N/A 70	N/A 56.82 mm
56.82 X 2.62 B-90	N/A 118958	N/A Metric Standard O-Ring	N/A Buna	N/A 140	N/A 2.62 mm	N/A 90	N/A 56.82 mm
58.42 X 2.62 B-70	N/A 118959	N/A Metric Standard O-Ring	N/A Buna	N/A 141	N/A 2.62 mm	N/A 70	N/A 58.42 mm
58.42 X 2.62 B-90	N/A 118960	N/A Metric Standard O-Ring	N/A Buna	N/A 141	N/A 2.62 mm	N/A 90	N/A 58.42 mm
59.99 X 2.62 B-70	N/A 118961	N/A Metric Standard O-Ring	N/A Buna	N/A 142	N/A 2.62 mm	N/A 70	N/A 59.99 mm

N/A
118937

N/A Metric Standard O-Ring

N/A Buna

N/A 130

N/A 2.62 mm

N/A 70

N/A 40.94 mm

40.94 X 2.62 B-90

N/A
118938

N/A Metric Standard O-Ring

N/A Buna

N/A 130

N/A 2.62 mm

N/A 90

N/A 40.94 mm

42.52 X 2.62 B-70

N/A
118939

N/A Metric Standard O-Ring

N/A Buna

N/A 131

N/A 2.62 mm

N/A 70

N/A 42.52 mm

42.52 X 2.62 B-90

N/A
118940

N/A Metric Standard O-Ring

N/A Buna

N/A 131

N/A 2.62 mm

N/A 90

N/A 42.52 mm

44.12 X 2.62 B-70

N/A
118941

N/A Metric Standard O-Ring

N/A Buna

N/A 132

N/A 2.62 mm

N/A 70

N/A 44.12 mm

44.12 X 2.62 B-90

N/A
118942

N/A Metric Standard O-Ring

N/A Buna

N/A 132

N/A 2.62 mm

N/A 90

N/A 44.12 mm

45.69 X 2.62 B-70

N/A
118943

N/A Metric Standard O-Ring

N/A Buna

N/A 133

N/A 2.62 mm

N/A 70

N/A 45.69 mm

45.69 X 2.62 B-90

N/A
118944

N/A Metric Standard O-Ring

N/A Buna

N/A 133

N/A 2.62 mm

N/A 90

N/A 45.69 mm

47.29 X 2.62 B-70

N/A
118945

N/A Metric Standard O-Ring

N/A Buna

N/A 134

N/A 2.62 mm

N/A 70

N/A 47.29 mm

47.29 X 2.62 B-90

N/A
118946

N/A Metric Standard O-Ring

N/A Buna

N/A 134

N/A 2.62 mm

N/A 90

N/A 47.29 mm

48.9 X 2.62 B-70

N/A
118947

N/A Metric Standard O-Ring

N/A Buna

N/A 135

N/A 2.62 mm

N/A 70

N/A 48.90 mm

48.9 X 2.62 B-90

N/A
118948

N/A Metric Standard O-Ring

N/A Buna

N/A 135

N/A 2.62 mm

N/A 90

N/A 48.90 mm

50.47 X 2.62 B-70

N/A
118949

N/A Metric Standard O-Ring

N/A Buna

N/A 136

N/A 2.62 mm

N/A 70

N/A 50.47 mm

50.47 X 2.62 B-90

N/A
118950

N/A Metric Standard O-Ring

N/A Buna

N/A 136

N/A 2.62 mm

N/A 90

N/A 50.47 mm

52.07 X 2.62 B-70

N/A
118951

N/A Metric Standard O-Ring

N/A Buna

N/A 137

N/A 2.62 mm

N/A 70

N/A 52.07 mm

52.07 X 2.62 B-90

N/A
118952

N/A Metric Standard O-Ring

N/A Buna

N/A 137

N/A 2.62 mm

N/A 90

N/A 52.07 mm

53.64 X 2.62 B-70

N/A
118953

N/A Metric Standard O-Ring

N/A Buna

N/A 138

N/A 2.62 mm

N/A 70

N/A 53.64 mm

53.64 X 2.62 B-90

N/A
118954

N/A Metric Standard O-Ring

N/A Buna

N/A 138

N/A 2.62 mm

N/A 90

N/A 53.64 mm

55.25 X 2.62 B-70

N/A
118955

N/A Metric Standard O-Ring

N/A Buna

N/A 139

N/A 2.62 mm

N/A 70

N/A 55.25 mm

55.25 X 2.62 B-90

N/A
118956

N/A Metric Standard O-Ring

N/A Buna

N/A 139

N/A 2.62 mm

N/A 90

N/A 55.25 mm

56.82 X 2.62 B-70

N/A
118957

N/A Metric Standard O-Ring

N/A Buna

N/A 140

N/A 2.62 mm

N/A 70

N/A 56.82 mm

56.82 X 2.62 B-90

N/A
118958

N/A Metric Standard O-Ring

N/A Buna

N/A 140

N/A 2.62 mm

N/A 90

N/A 56.82 mm

58.42 X 2.62 B-70

N/A
118959

N/A Metric Standard O-Ring

N/A Buna

N/A 141

N/A 2.62 mm

N/A 70

N/A 58.42 mm

58.42 X 2.62 B-90

N/A
118960

N/A Metric Standard O-Ring

N/A Buna

N/A 141

N/A 2.62 mm

N/A 90

N/A 58.42 mm

59.99 X 2.62 B-70

N/A
118961

N/A Metric Standard O-Ring

N/A Buna

N/A 142

N/A 2.62 mm

N/A 70

N/A 59.99 mm