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
85x6.00B70	N/A 124203	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 85.00 mm	N/A Seal Guides
85 X 6 B-90	N/A 124204	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 85.00 mm	N/A Seal Guides
86x6.00B70	N/A 124205	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 86.00 mm	N/A Seal Guides
86 X 6 B-90	N/A 124206	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 86.00 mm	N/A Seal Guides
88x6.00B70	N/A 124207	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 88.00 mm	N/A Seal Guides
88 X 6 B-90	N/A 124208	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 88.00 mm	N/A Seal Guides
89 X 6 B-70	N/A 124209	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 89.00 mm	N/A Seal Guides
89 X 6 B-90	N/A 124210	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 89.00 mm	N/A Seal Guides
90x6.00B70	N/A 124211	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 90.00 mm	N/A Seal Guides
90 X 6 B-90	N/A 124212	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 90.00 mm	N/A Seal Guides
92x6.00B70	N/A 124213	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 92.00 mm	N/A Seal Guides
92 X 6 B-90	N/A 124214	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 92.00 mm	N/A Seal Guides
93x6.00B70	N/A 124215	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 93.00 mm	N/A Seal Guides
93 X 6 B-90	N/A 124216	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 93.00 mm	N/A Seal Guides
95x6.00B70	N/A 124217	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 95.00 mm	N/A Seal Guides
95 X 6 B-90	N/A 124218	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 95.00 mm	N/A Seal Guides
96x6.00B70	N/A 124219	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 96.00 mm	N/A Seal Guides
96 X 6 B-90	N/A 124220	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 96.00 mm	N/A Seal Guides
98x6.00B70	N/A 124221	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 98.00 mm	N/A Seal Guides
98 X 6 B-90	N/A 124222	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 98.00 mm	N/A Seal Guides
99x6.00B70	N/A 124223	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 99.00 mm	N/A Seal Guides
99 X 6 B-90	N/A 124224	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 99.00 mm	N/A Seal Guides
100x6.00B70	N/A 124225	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 100.00 mm	N/A Seal Guides
100 X 6 B-90	N/A 124226	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 100.00 mm	N/A Seal Guides
101 X 6 B-70	N/A 124227	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 101.00 mm	N/A Seal Guides

N/A
124203

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 85.00 mm

N/A Seal Guides

85 X 6 B-90

N/A
124204

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 85.00 mm

N/A Seal Guides

86x6.00B70

N/A
124205

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 86.00 mm

N/A Seal Guides

86 X 6 B-90

N/A
124206

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 86.00 mm

N/A Seal Guides

88x6.00B70

N/A
124207

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 88.00 mm

N/A Seal Guides

88 X 6 B-90

N/A
124208

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 88.00 mm

N/A Seal Guides

89 X 6 B-70

N/A
124209

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 89.00 mm

N/A Seal Guides

89 X 6 B-90

N/A
124210

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 89.00 mm

N/A Seal Guides

90x6.00B70

N/A
124211

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 90.00 mm

N/A Seal Guides

90 X 6 B-90

N/A
124212

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 90.00 mm

N/A Seal Guides

92x6.00B70

N/A
124213

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 92.00 mm

N/A Seal Guides

92 X 6 B-90

N/A
124214

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 92.00 mm

N/A Seal Guides

93x6.00B70

N/A
124215

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 93.00 mm

N/A Seal Guides

93 X 6 B-90

N/A
124216

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 93.00 mm

N/A Seal Guides

95x6.00B70

N/A
124217

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 95.00 mm

N/A Seal Guides

95 X 6 B-90

N/A
124218

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 95.00 mm

N/A Seal Guides

96x6.00B70

N/A
124219

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 96.00 mm

N/A Seal Guides

96 X 6 B-90

N/A
124220

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 96.00 mm

N/A Seal Guides

98x6.00B70

N/A
124221

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 98.00 mm

N/A Seal Guides

98 X 6 B-90

N/A
124222

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 98.00 mm

N/A Seal Guides

99x6.00B70

N/A
124223

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 99.00 mm

N/A Seal Guides

99 X 6 B-90

N/A
124224

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 99.00 mm

N/A Seal Guides

100x6.00B70

N/A
124225

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 100.00 mm

N/A Seal Guides

100 X 6 B-90

N/A
124226

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 100.00 mm

N/A Seal Guides

101 X 6 B-70

N/A
124227

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 101.00 mm

N/A Seal Guides