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	Product Guides
59.5 X 6 B-70	N/A 124153	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 59.50 mm	N/A Seal Guides
59.5 X 6 B-90	N/A 124154	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 59.50 mm	N/A Seal Guides
60x6.00B70	N/A 124155	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 60.00 mm	N/A Seal Guides
60 X 6 B-90	N/A 124156	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 60.00 mm	N/A Seal Guides
61x6.00B70	N/A 124157	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 61.00 mm	N/A Seal Guides
61 X 6 B-90	N/A 124158	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 61.00 mm	N/A Seal Guides
62x6.00B70	N/A 124159	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 62.00 mm	N/A Seal Guides
62 X 6 B-90	N/A 124160	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 62.00 mm	N/A Seal Guides
63x6.00B70	N/A 124161	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 63.00 mm	N/A Seal Guides
63 X 6 B-90	N/A 124162	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 63.00 mm	N/A Seal Guides
64x6.00B70	N/A 124163	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 64.00 mm	N/A Seal Guides
64 X 6 B-90	N/A 124164	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 64.00 mm	N/A Seal Guides
65x6.00B70	N/A 124165	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 65.00 mm	N/A Seal Guides
65 X 6 B-90	N/A 124166	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 65.00 mm	N/A Seal Guides
66x6.00B70	N/A 124167	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 66.00 mm	N/A Seal Guides
66 X 6 B-90	N/A 124168	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 66.00 mm	N/A Seal Guides
67x6.00B70	N/A 124169	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 67.00 mm	N/A Seal Guides
67 X 6 B-90	N/A 124170	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 67.00 mm	N/A Seal Guides
68x6.00B70	N/A 124171	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 68.00 mm	N/A Seal Guides
68 X 6 B-90	N/A 124172	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 68.00 mm	N/A Seal Guides
69x6.00B70	N/A 124173	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 69.00 mm	N/A Seal Guides
69 X 6 B-90	N/A 124174	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 69.00 mm	N/A Seal Guides
70x6.00B70	N/A 124175	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 70.00 mm	N/A Seal Guides
70 X 6 B-90	N/A 124176	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 70.00 mm	N/A Seal Guides
71 X 6 B-70	N/A 124177	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 71.00 mm	N/A Seal Guides

N/A
124153

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 59.50 mm

N/A Seal Guides

59.5 X 6 B-90

N/A
124154

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 59.50 mm

N/A Seal Guides

60x6.00B70

N/A
124155

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 60.00 mm

N/A Seal Guides

60 X 6 B-90

N/A
124156

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 60.00 mm

N/A Seal Guides

61x6.00B70

N/A
124157

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 61.00 mm

N/A Seal Guides

61 X 6 B-90

N/A
124158

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 61.00 mm

N/A Seal Guides

62x6.00B70

N/A
124159

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 62.00 mm

N/A Seal Guides

62 X 6 B-90

N/A
124160

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 62.00 mm

N/A Seal Guides

63x6.00B70

N/A
124161

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 63.00 mm

N/A Seal Guides

63 X 6 B-90

N/A
124162

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 63.00 mm

N/A Seal Guides

64x6.00B70

N/A
124163

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 64.00 mm

N/A Seal Guides

64 X 6 B-90

N/A
124164

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 64.00 mm

N/A Seal Guides

65x6.00B70

N/A
124165

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 65.00 mm

N/A Seal Guides

65 X 6 B-90

N/A
124166

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 65.00 mm

N/A Seal Guides

66x6.00B70

N/A
124167

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 66.00 mm

N/A Seal Guides

66 X 6 B-90

N/A
124168

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 66.00 mm

N/A Seal Guides

67x6.00B70

N/A
124169

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 67.00 mm

N/A Seal Guides

67 X 6 B-90

N/A
124170

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 67.00 mm

N/A Seal Guides

68x6.00B70

N/A
124171

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 68.00 mm

N/A Seal Guides

68 X 6 B-90

N/A
124172

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 68.00 mm

N/A Seal Guides

69x6.00B70

N/A
124173

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 69.00 mm

N/A Seal Guides

69 X 6 B-90

N/A
124174

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 69.00 mm

N/A Seal Guides

70x6.00B70

N/A
124175

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 70.00 mm

N/A Seal Guides

70 X 6 B-90

N/A
124176

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 70.00 mm

N/A Seal Guides

71 X 6 B-70

N/A
124177

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 71.00 mm

N/A Seal Guides