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
59.99 X 2.62 B-90	N/A 118962	N/A Metric Standard O-Ring	N/A Buna	N/A 142	N/A 2.62 mm	N/A 90	N/A 59.99 mm
61.6 X 2.62 B-70	N/A 118963	N/A Metric Standard O-Ring	N/A Buna	N/A 143	N/A 2.62 mm	N/A 70	N/A 61.60 mm
61.6 X 2.62 B-90	N/A 118964	N/A Metric Standard O-Ring	N/A Buna	N/A 143	N/A 2.62 mm	N/A 90	N/A 61.60 mm
63.17 X 2.62 B-70	N/A 118965	N/A Metric Standard O-Ring	N/A Buna	N/A 144	N/A 2.62 mm	N/A 70	N/A 63.17 mm
63.17 X 2.62 B-90	N/A 118966	N/A Metric Standard O-Ring	N/A Buna	N/A 144	N/A 2.62 mm	N/A 90	N/A 63.17 mm
64.77 X 2.62 B-70	N/A 118967	N/A Metric Standard O-Ring	N/A Buna	N/A 145	N/A 2.62 mm	N/A 70	N/A 64.77 mm
64.77 X 2.62 B-90	N/A 118968	N/A Metric Standard O-Ring	N/A Buna	N/A 145	N/A 2.62 mm	N/A 90	N/A 64.77 mm
66.34 X 2.62 B-70	N/A 118969	N/A Metric Standard O-Ring	N/A Buna	N/A 146	N/A 2.62 mm	N/A 70	N/A 66.34 mm
66.34 X 2.62 B-90	N/A 118970	N/A Metric Standard O-Ring	N/A Buna	N/A 146	N/A 2.62 mm	N/A 90	N/A 66.34 mm
67.95 X 2.62 B-70	N/A 118971	N/A Metric Standard O-Ring	N/A Buna	N/A 147	N/A 2.62 mm	N/A 70	N/A 67.95 mm
67.95 X 2.62 B-90	N/A 118972	N/A Metric Standard O-Ring	N/A Buna	N/A 147	N/A 2.62 mm	N/A 90	N/A 67.95 mm
69.52 X 2.62 B-70	N/A 118973	N/A Metric Standard O-Ring	N/A Buna	N/A 148	N/A 2.62 mm	N/A 70	N/A 69.52 mm
69.52 X 2.62 B-90	N/A 118974	N/A Metric Standard O-Ring	N/A Buna	N/A 148	N/A 2.62 mm	N/A 90	N/A 69.52 mm
71.12 X 2.62 B-70	N/A 118975	N/A Metric Standard O-Ring	N/A Buna	N/A 149	N/A 2.62 mm	N/A 70	N/A 71.12 mm
71.12 X 2.62 B-90	N/A 118976	N/A Metric Standard O-Ring	N/A Buna	N/A 149	N/A 2.62 mm	N/A 90	N/A 71.12 mm
72.69 X 2.62 B-70	N/A 118977	N/A Metric Standard O-Ring	N/A Buna	N/A 150	N/A 2.62 mm	N/A 70	N/A 72.69 mm
72.69 X 2.62 B-90	N/A 118978	N/A Metric Standard O-Ring	N/A Buna	N/A 150	N/A 2.62 mm	N/A 90	N/A 72.69 mm
74.3x2.62B70	N/A 118979	N/A Metric Standard O-Ring	N/A Buna	N/A BS640	N/A 2.62 mm	N/A 70	N/A 74.30 mm
74.3 X 2.62 B-90	N/A 118980	N/A Metric Standard O-Ring	N/A Buna	N/A BS640	N/A 2.62 mm	N/A 90	N/A 74.30 mm
75.87 X 2.62 B-70	N/A 118981	N/A Metric Standard O-Ring	N/A Buna	N/A 151	N/A 2.62 mm	N/A 70	N/A 75.87 mm
75.87 X 2.62 B-90	N/A 118982	N/A Metric Standard O-Ring	N/A Buna	N/A 151	N/A 2.62 mm	N/A 90	N/A 75.87 mm
77.5 X 2.62 B-70	N/A 118983	N/A Metric Standard O-Ring	N/A Buna	N/A BS641	N/A 2.62 mm	N/A 70	N/A 77.50 mm
77.5 X 2.62 B-90	N/A 118984	N/A Metric Standard O-Ring	N/A Buna	N/A BS641	N/A 2.62 mm	N/A 90	N/A 77.50 mm
80.6x2.62B70	N/A 118987	N/A Metric Standard O-Ring	N/A Buna	N/A BS642	N/A 2.62 mm	N/A 70	N/A 80.60 mm
80.6 X 2.62 B-90	N/A 118988	N/A Metric Standard O-Ring	N/A Buna	N/A BS642	N/A 2.62 mm	N/A 90	N/A 80.60 mm

N/A
118962

N/A Metric Standard O-Ring

N/A Buna

N/A 142

N/A 2.62 mm

N/A 90

N/A 59.99 mm

61.6 X 2.62 B-70

N/A
118963

N/A Metric Standard O-Ring

N/A Buna

N/A 143

N/A 2.62 mm

N/A 70

N/A 61.60 mm

61.6 X 2.62 B-90

N/A
118964

N/A Metric Standard O-Ring

N/A Buna

N/A 143

N/A 2.62 mm

N/A 90

N/A 61.60 mm

63.17 X 2.62 B-70

N/A
118965

N/A Metric Standard O-Ring

N/A Buna

N/A 144

N/A 2.62 mm

N/A 70

N/A 63.17 mm

63.17 X 2.62 B-90

N/A
118966

N/A Metric Standard O-Ring

N/A Buna

N/A 144

N/A 2.62 mm

N/A 90

N/A 63.17 mm

64.77 X 2.62 B-70

N/A
118967

N/A Metric Standard O-Ring

N/A Buna

N/A 145

N/A 2.62 mm

N/A 70

N/A 64.77 mm

64.77 X 2.62 B-90

N/A
118968

N/A Metric Standard O-Ring

N/A Buna

N/A 145

N/A 2.62 mm

N/A 90

N/A 64.77 mm

66.34 X 2.62 B-70

N/A
118969

N/A Metric Standard O-Ring

N/A Buna

N/A 146

N/A 2.62 mm

N/A 70

N/A 66.34 mm

66.34 X 2.62 B-90

N/A
118970

N/A Metric Standard O-Ring

N/A Buna

N/A 146

N/A 2.62 mm

N/A 90

N/A 66.34 mm

67.95 X 2.62 B-70

N/A
118971

N/A Metric Standard O-Ring

N/A Buna

N/A 147

N/A 2.62 mm

N/A 70

N/A 67.95 mm

67.95 X 2.62 B-90

N/A
118972

N/A Metric Standard O-Ring

N/A Buna

N/A 147

N/A 2.62 mm

N/A 90

N/A 67.95 mm

69.52 X 2.62 B-70

N/A
118973

N/A Metric Standard O-Ring

N/A Buna

N/A 148

N/A 2.62 mm

N/A 70

N/A 69.52 mm

69.52 X 2.62 B-90

N/A
118974

N/A Metric Standard O-Ring

N/A Buna

N/A 148

N/A 2.62 mm

N/A 90

N/A 69.52 mm

71.12 X 2.62 B-70

N/A
118975

N/A Metric Standard O-Ring

N/A Buna

N/A 149

N/A 2.62 mm

N/A 70

N/A 71.12 mm

71.12 X 2.62 B-90

N/A
118976

N/A Metric Standard O-Ring

N/A Buna

N/A 149

N/A 2.62 mm

N/A 90

N/A 71.12 mm

72.69 X 2.62 B-70

N/A
118977

N/A Metric Standard O-Ring

N/A Buna

N/A 150

N/A 2.62 mm

N/A 70

N/A 72.69 mm

72.69 X 2.62 B-90

N/A
118978

N/A Metric Standard O-Ring

N/A Buna

N/A 150

N/A 2.62 mm

N/A 90

N/A 72.69 mm

74.3x2.62B70

N/A
118979

N/A Metric Standard O-Ring

N/A Buna

N/A BS640

N/A 2.62 mm

N/A 70

N/A 74.30 mm

74.3 X 2.62 B-90

N/A
118980

N/A Metric Standard O-Ring

N/A Buna

N/A BS640

N/A 2.62 mm

N/A 90

N/A 74.30 mm

75.87 X 2.62 B-70

N/A
118981

N/A Metric Standard O-Ring

N/A Buna

N/A 151

N/A 2.62 mm

N/A 70

N/A 75.87 mm

75.87 X 2.62 B-90

N/A
118982

N/A Metric Standard O-Ring

N/A Buna

N/A 151

N/A 2.62 mm

N/A 90

N/A 75.87 mm

77.5 X 2.62 B-70

N/A
118983

N/A Metric Standard O-Ring

N/A Buna

N/A BS641

N/A 2.62 mm

N/A 70

N/A 77.50 mm

77.5 X 2.62 B-90

N/A
118984

N/A Metric Standard O-Ring

N/A Buna

N/A BS641

N/A 2.62 mm

N/A 90

N/A 77.50 mm

80.6x2.62B70

N/A
118987

N/A Metric Standard O-Ring

N/A Buna

N/A BS642

N/A 2.62 mm

N/A 70

N/A 80.60 mm

80.6 X 2.62 B-90

N/A
118988

N/A Metric Standard O-Ring

N/A Buna

N/A BS642

N/A 2.62 mm

N/A 90

N/A 80.60 mm