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
120x6.00B70	N/A 124253	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 120.00 mm	N/A Seal Guides
120 X 6 B-90	N/A 124254	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 120.00 mm	N/A Seal Guides
122x6.00B70	N/A 124255	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 122.00 mm	N/A Seal Guides
122 X 6 B-90	N/A 124256	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 122.00 mm	N/A Seal Guides
123x6.00B70	N/A 124257	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 123.00 mm	N/A Seal Guides
123 X 6 B-90	N/A 124258	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 123.00 mm	N/A Seal Guides
124x6.00B70	N/A 124259	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 124.00 mm	N/A Seal Guides
124 X 6 B-90	N/A 124260	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 124.00 mm	N/A Seal Guides
125x6.00B70	N/A 124261	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 125.00 mm	N/A Seal Guides
125 X 6 B-90	N/A 124262	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 125.00 mm	N/A Seal Guides
126 X 6 B-70	N/A 124263	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 126.00 mm	N/A Seal Guides
126 X 6 B-90	N/A 124264	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 126.00 mm	N/A Seal Guides
128x6.00B70	N/A 124265	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 128.00 mm	N/A Seal Guides
128 X 6 B-90	N/A 124266	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 128.00 mm	N/A Seal Guides
130x6.00B70	N/A 124267	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 130.00 mm	N/A Seal Guides
130 X 6 B-90	N/A 124268	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 130.00 mm	N/A Seal Guides
132x6.00B70	N/A 124269	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 132.00 mm	N/A Seal Guides
132 X 6 B-90	N/A 124270	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 132.00 mm	N/A Seal Guides
134x6.00B70	N/A 124271	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 134.00 mm	N/A Seal Guides
134 X 6 B-90	N/A 124272	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 134.00 mm	N/A Seal Guides
135x6.00B70	N/A 124273	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 135.00 mm	N/A Seal Guides
135 X 6 B-90	N/A 124274	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 135.00 mm	N/A Seal Guides
136 X 6 B-70	N/A 124275	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 136.00 mm	N/A Seal Guides
136 X 6 B-90	N/A 124276	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 136.00 mm	N/A Seal Guides
138x6.00B70	N/A 124277	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 138.00 mm	N/A Seal Guides

N/A
124253

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 120.00 mm

N/A Seal Guides

120 X 6 B-90

N/A
124254

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 120.00 mm

N/A Seal Guides

122x6.00B70

N/A
124255

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 122.00 mm

N/A Seal Guides

122 X 6 B-90

N/A
124256

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 122.00 mm

N/A Seal Guides

123x6.00B70

N/A
124257

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 123.00 mm

N/A Seal Guides

123 X 6 B-90

N/A
124258

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 123.00 mm

N/A Seal Guides

124x6.00B70

N/A
124259

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 124.00 mm

N/A Seal Guides

124 X 6 B-90

N/A
124260

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 124.00 mm

N/A Seal Guides

125x6.00B70

N/A
124261

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 125.00 mm

N/A Seal Guides

125 X 6 B-90

N/A
124262

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 125.00 mm

N/A Seal Guides

126 X 6 B-70

N/A
124263

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 126.00 mm

N/A Seal Guides

126 X 6 B-90

N/A
124264

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 126.00 mm

N/A Seal Guides

128x6.00B70

N/A
124265

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 128.00 mm

N/A Seal Guides

128 X 6 B-90

N/A
124266

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 128.00 mm

N/A Seal Guides

130x6.00B70

N/A
124267

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 130.00 mm

N/A Seal Guides

130 X 6 B-90

N/A
124268

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 130.00 mm

N/A Seal Guides

132x6.00B70

N/A
124269

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 132.00 mm

N/A Seal Guides

132 X 6 B-90

N/A
124270

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 132.00 mm

N/A Seal Guides

134x6.00B70

N/A
124271

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 134.00 mm

N/A Seal Guides

134 X 6 B-90

N/A
124272

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 134.00 mm

N/A Seal Guides

135x6.00B70

N/A
124273

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 135.00 mm

N/A Seal Guides

135 X 6 B-90

N/A
124274

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 135.00 mm

N/A Seal Guides

136 X 6 B-70

N/A
124275

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 136.00 mm

N/A Seal Guides

136 X 6 B-90

N/A
124276

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 136.00 mm

N/A Seal Guides

138x6.00B70

N/A
124277

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 138.00 mm

N/A Seal Guides