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
162 X 3.5 B-70	N/A 120293	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 70	N/A 162.00 mm
162 X 3.5 B-90	N/A 120294	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 90	N/A 162.00 mm
163x3.50B70	N/A 120295	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 70	N/A 163.00 mm
163 X 3.5 B-90	N/A 120296	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 90	N/A 163.00 mm
164 X 3.5 B-70	N/A 120297	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 70	N/A 164.00 mm
164 X 3.5 B-90	N/A 120298	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 90	N/A 164.00 mm
165 X 3.5 B-70	N/A 120299	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 70	N/A 165.00 mm
165 X 3.5 B-90	N/A 120300	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 90	N/A 165.00 mm
166 X 3.5 B-70	N/A 120301	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 70	N/A 166.00 mm
166 X 3.5 B-90	N/A 120302	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 90	N/A 166.00 mm
167 X 3.5 B-70	N/A 120303	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 70	N/A 167.00 mm
167 X 3.5 B-90	N/A 120304	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 90	N/A 167.00 mm
168x3.50B70	N/A 120305	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 70	N/A 168.00 mm
168 X 3.5 B-90	N/A 120306	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 90	N/A 168.00 mm
169 X 3.5 B-70	N/A 120307	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 70	N/A 169.00 mm
169 X 3.5 B-90	N/A 120308	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 90	N/A 169.00 mm
170x3.50B70	N/A 120309	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 70	N/A 170.00 mm
170 X 3.5 B-90	N/A 120310	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 90	N/A 170.00 mm
171 X 3.5 B-70	N/A 120311	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 70	N/A 171.00 mm
171 X 3.5 B-90	N/A 120312	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 90	N/A 171.00 mm
172 X 3.5 B-70	N/A 120313	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 70	N/A 172.00 mm
172 X 3.5 B-90	N/A 120314	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 90	N/A 172.00 mm
173x3.50B70	N/A 120315	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 70	N/A 173.00 mm
173 X 3.5 B-90	N/A 120316	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 90	N/A 173.00 mm
174x3.50B70	N/A 120317	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.50 mm	N/A 70	N/A 174.00 mm

N/A
120293

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 70

N/A 162.00 mm

162 X 3.5 B-90

N/A
120294

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 90

N/A 162.00 mm

163x3.50B70

N/A
120295

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 70

N/A 163.00 mm

163 X 3.5 B-90

N/A
120296

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 90

N/A 163.00 mm

164 X 3.5 B-70

N/A
120297

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 70

N/A 164.00 mm

164 X 3.5 B-90

N/A
120298

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 90

N/A 164.00 mm

165 X 3.5 B-70

N/A
120299

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 70

N/A 165.00 mm

165 X 3.5 B-90

N/A
120300

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 90

N/A 165.00 mm

166 X 3.5 B-70

N/A
120301

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 70

N/A 166.00 mm

166 X 3.5 B-90

N/A
120302

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 90

N/A 166.00 mm

167 X 3.5 B-70

N/A
120303

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 70

N/A 167.00 mm

167 X 3.5 B-90

N/A
120304

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 90

N/A 167.00 mm

168x3.50B70

N/A
120305

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 70

N/A 168.00 mm

168 X 3.5 B-90

N/A
120306

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 90

N/A 168.00 mm

169 X 3.5 B-70

N/A
120307

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 70

N/A 169.00 mm

169 X 3.5 B-90

N/A
120308

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 90

N/A 169.00 mm

170x3.50B70

N/A
120309

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 70

N/A 170.00 mm

170 X 3.5 B-90

N/A
120310

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 90

N/A 170.00 mm

171 X 3.5 B-70

N/A
120311

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 70

N/A 171.00 mm

171 X 3.5 B-90

N/A
120312

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 90

N/A 171.00 mm

172 X 3.5 B-70

N/A
120313

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 70

N/A 172.00 mm

172 X 3.5 B-90

N/A
120314

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 90

N/A 172.00 mm

173x3.50B70

N/A
120315

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 70

N/A 173.00 mm

173 X 3.5 B-90

N/A
120316

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 90

N/A 173.00 mm

174x3.50B70

N/A
120317

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.50 mm

N/A 70

N/A 174.00 mm