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
67 X 2 B-90	N/A 118154	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 90	N/A 67.00 mm
68x2.00B70	N/A 118155	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 70	N/A 68.00 mm
68 X 2 B-90	N/A 118156	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 90	N/A 68.00 mm
69x2.00B70	N/A 118157	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 70	N/A 69.00 mm
69 X 2 B-90	N/A 118158	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 90	N/A 69.00 mm
69.5x3.00B70	N/A 118159	N/A Metric Standard O-Ring	N/A Buna	N/A S70	N/A 2.00 mm	N/A 70	N/A 69.50 mm
69.5 X 2 B-90	N/A 118160	N/A Metric Standard O-Ring	N/A Buna	N/A S70	N/A 2.00 mm	N/A 90	N/A 69.50 mm
70x2.00B70	N/A 118161	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 70	N/A 70.00 mm
70 X 2 B-90	N/A 118162	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 90	N/A 70.00 mm
70.5 X 2 B-70	N/A 118163	N/A Metric Standard O-Ring	N/A Buna	N/A S71	N/A 2.00 mm	N/A 70	N/A 70.50 mm
70.5 X 2 B-90	N/A 118164	N/A Metric Standard O-Ring	N/A Buna	N/A S71	N/A 2.00 mm	N/A 90	N/A 70.50 mm
71x2.00B70	N/A 118165	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 70	N/A 71.00 mm
71 X 2 B-90	N/A 118166	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 90	N/A 71.00 mm
72x2.00B70	N/A 118167	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 70	N/A 72.00 mm
72 X 2 B-90	N/A 118168	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 90	N/A 72.00 mm
73x2.00B70	N/A 118169	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 70	N/A 73.00 mm
73 X 2 B-90	N/A 118170	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 90	N/A 73.00 mm
74x2.00B70	N/A 118171	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 70	N/A 74.00 mm
74 X 2 B-90	N/A 118172	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 90	N/A 74.00 mm
74.5x3.00B70	N/A 118173	N/A Metric Standard O-Ring	N/A Buna	N/A S75	N/A 2.00 mm	N/A 70	N/A 74.50 mm
74.5 X 2 B-90	N/A 118174	N/A Metric Standard O-Ring	N/A Buna	N/A S75	N/A 2.00 mm	N/A 90	N/A 74.50 mm
75x2.00B70	N/A 118175	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 70	N/A 75.00 mm
75 X 2 B-90	N/A 118176	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 90	N/A 75.00 mm
76x2.00B70	N/A 118177	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 70	N/A 76.00 mm
76 X 2 B-90	N/A 118178	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 90	N/A 76.00 mm

N/A
118154

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 90

N/A 67.00 mm

68x2.00B70

N/A
118155

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 70

N/A 68.00 mm

68 X 2 B-90

N/A
118156

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 90

N/A 68.00 mm

69x2.00B70

N/A
118157

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 70

N/A 69.00 mm

69 X 2 B-90

N/A
118158

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 90

N/A 69.00 mm

69.5x3.00B70

N/A
118159

N/A Metric Standard O-Ring

N/A Buna

N/A S70

N/A 2.00 mm

N/A 70

N/A 69.50 mm

69.5 X 2 B-90

N/A
118160

N/A Metric Standard O-Ring

N/A Buna

N/A S70

N/A 2.00 mm

N/A 90

N/A 69.50 mm

70x2.00B70

N/A
118161

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 70

N/A 70.00 mm

70 X 2 B-90

N/A
118162

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 90

N/A 70.00 mm

70.5 X 2 B-70

N/A
118163

N/A Metric Standard O-Ring

N/A Buna

N/A S71

N/A 2.00 mm

N/A 70

N/A 70.50 mm

70.5 X 2 B-90

N/A
118164

N/A Metric Standard O-Ring

N/A Buna

N/A S71

N/A 2.00 mm

N/A 90

N/A 70.50 mm

71x2.00B70

N/A
118165

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 70

N/A 71.00 mm

71 X 2 B-90

N/A
118166

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 90

N/A 71.00 mm

72x2.00B70

N/A
118167

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 70

N/A 72.00 mm

72 X 2 B-90

N/A
118168

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 90

N/A 72.00 mm

73x2.00B70

N/A
118169

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 70

N/A 73.00 mm

73 X 2 B-90

N/A
118170

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 90

N/A 73.00 mm

74x2.00B70

N/A
118171

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 70

N/A 74.00 mm

74 X 2 B-90

N/A
118172

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 90

N/A 74.00 mm

74.5x3.00B70

N/A
118173

N/A Metric Standard O-Ring

N/A Buna

N/A S75

N/A 2.00 mm

N/A 70

N/A 74.50 mm

74.5 X 2 B-90

N/A
118174

N/A Metric Standard O-Ring

N/A Buna

N/A S75

N/A 2.00 mm

N/A 90

N/A 74.50 mm

75x2.00B70

N/A
118175

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 70

N/A 75.00 mm

75 X 2 B-90

N/A
118176

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 90

N/A 75.00 mm

76x2.00B70

N/A
118177

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 70

N/A 76.00 mm

76 X 2 B-90

N/A
118178

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 90

N/A 76.00 mm