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
105 X 10 B-70	N/A 125161	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 70	N/A 105.00 mm	N/A Seal Guides
105 X 10 B-90	N/A 125162	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 90	N/A 105.00 mm	N/A Seal Guides
120 X 10 B-70	N/A 125163	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 70	N/A 120.00 mm	N/A Seal Guides
120 X 10 B-90	N/A 125164	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 90	N/A 120.00 mm	N/A Seal Guides
140 X 10 B-70	N/A 125165	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 70	N/A 140.00 mm	N/A Seal Guides
140 X 10 B-90	N/A 125166	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 90	N/A 140.00 mm	N/A Seal Guides
160 X 10 B-70	N/A 125167	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 70	N/A 160.00 mm	N/A Seal Guides
160 X 10 B-90	N/A 125168	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 90	N/A 160.00 mm	N/A Seal Guides
195 X 10 B-70	N/A 125169	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 70	N/A 195.00 mm	N/A Seal Guides
195 X 10 B-90	N/A 125170	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 90	N/A 195.00 mm	N/A Seal Guides
205 X 10 B-70	N/A 125171	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 70	N/A 205.00 mm	N/A Seal Guides
205 X 10 B-90	N/A 125172	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 90	N/A 205.00 mm	N/A Seal Guides
228 X 10 B-70	N/A 125173	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 70	N/A 228.00 mm	N/A Seal Guides
228 X 10 B-90	N/A 125174	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 90	N/A 228.00 mm	N/A Seal Guides
264 X 10 B-70	N/A 125175	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 70	N/A 264.00 mm	N/A Seal Guides
264 X 10 B-90	N/A 125176	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 90	N/A 264.00 mm	N/A Seal Guides
270 X 10 B-70	N/A 125177	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 70	N/A 270.00 mm	N/A Seal Guides
270 X 10 B-90	N/A 125178	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 90	N/A 270.00 mm	N/A Seal Guides
280 X 10 B-70	N/A 125179	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 70	N/A 280.00 mm	N/A Seal Guides
280 X 10 B-90	N/A 125180	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 90	N/A 280.00 mm	N/A Seal Guides
292 X 10 B-70	N/A 125181	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 70	N/A 292.00 mm	N/A Seal Guides
292 X 10 B-90	N/A 125182	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 90	N/A 292.00 mm	N/A Seal Guides
300 X 10 B-70	N/A 125183	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 70	N/A 300.00 mm	N/A Seal Guides
300 X 10 B-90	N/A 125184	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 90	N/A 300.00 mm	N/A Seal Guides
315 X 10 B-70	N/A 125185	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 10.00 mm	N/A 70	N/A 315.00 mm	N/A Seal Guides

N/A
125161

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 70

N/A 105.00 mm

N/A Seal Guides

105 X 10 B-90

N/A
125162

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 90

N/A 105.00 mm

N/A Seal Guides

120 X 10 B-70

N/A
125163

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 70

N/A 120.00 mm

N/A Seal Guides

120 X 10 B-90

N/A
125164

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 90

N/A 120.00 mm

N/A Seal Guides

140 X 10 B-70

N/A
125165

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 70

N/A 140.00 mm

N/A Seal Guides

140 X 10 B-90

N/A
125166

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 90

N/A 140.00 mm

N/A Seal Guides

160 X 10 B-70

N/A
125167

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 70

N/A 160.00 mm

N/A Seal Guides

160 X 10 B-90

N/A
125168

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 90

N/A 160.00 mm

N/A Seal Guides

195 X 10 B-70

N/A
125169

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 70

N/A 195.00 mm

N/A Seal Guides

195 X 10 B-90

N/A
125170

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 90

N/A 195.00 mm

N/A Seal Guides

205 X 10 B-70

N/A
125171

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 70

N/A 205.00 mm

N/A Seal Guides

205 X 10 B-90

N/A
125172

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 90

N/A 205.00 mm

N/A Seal Guides

228 X 10 B-70

N/A
125173

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 70

N/A 228.00 mm

N/A Seal Guides

228 X 10 B-90

N/A
125174

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 90

N/A 228.00 mm

N/A Seal Guides

264 X 10 B-70

N/A
125175

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 70

N/A 264.00 mm

N/A Seal Guides

264 X 10 B-90

N/A
125176

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 90

N/A 264.00 mm

N/A Seal Guides

270 X 10 B-70

N/A
125177

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 70

N/A 270.00 mm

N/A Seal Guides

270 X 10 B-90

N/A
125178

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 90

N/A 270.00 mm

N/A Seal Guides

280 X 10 B-70

N/A
125179

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 70

N/A 280.00 mm

N/A Seal Guides

280 X 10 B-90

N/A
125180

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 90

N/A 280.00 mm

N/A Seal Guides

292 X 10 B-70

N/A
125181

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 70

N/A 292.00 mm

N/A Seal Guides

292 X 10 B-90

N/A
125182

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 90

N/A 292.00 mm

N/A Seal Guides

300 X 10 B-70

N/A
125183

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 70

N/A 300.00 mm

N/A Seal Guides

300 X 10 B-90

N/A
125184

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 90

N/A 300.00 mm

N/A Seal Guides

315 X 10 B-70

N/A
125185

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 10.00 mm

N/A 70

N/A 315.00 mm

N/A Seal Guides