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
176 X 6 B-90	N/A 124328	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 176.00 mm	N/A Seal Guides
180x6.00B70	N/A 124329	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 180.00 mm	N/A Seal Guides
180 X 6 B-90	N/A 124330	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 180.00 mm	N/A Seal Guides
182 X 6 B-70	N/A 124331	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 182.00 mm	N/A Seal Guides
182 X 6 B-90	N/A 124332	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 182.00 mm	N/A Seal Guides
184x6.00B70	N/A 124333	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 184.00 mm	N/A Seal Guides
184 X 6 B-90	N/A 124334	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 184.00 mm	N/A Seal Guides
185x6.00B70	N/A 124335	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 185.00 mm	N/A Seal Guides
185 X 6 B-90	N/A 124336	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 185.00 mm	N/A Seal Guides
188x6.00B70	N/A 124337	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 188.00 mm	N/A Seal Guides
188 X 6 B-90	N/A 124338	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 188.00 mm	N/A Seal Guides
190x6.00B70	N/A 124339	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 190.00 mm	N/A Seal Guides
190 X 6 B-90	N/A 124340	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 190.00 mm	N/A Seal Guides
191.2 X 6 B-70	N/A 124341	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 191.20 mm	N/A Seal Guides
191.2 X 6 B-90	N/A 124342	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 191.20 mm	N/A Seal Guides
193 X 6 B-70	N/A 124343	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 193.00 mm	N/A Seal Guides
193 X 6 B-90	N/A 124344	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 193.00 mm	N/A Seal Guides
195x6.00B70	N/A 124345	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 195.00 mm	N/A Seal Guides
195 X 6 B-90	N/A 124346	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 195.00 mm	N/A Seal Guides
196 X 6 B-70	N/A 124347	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 196.00 mm	N/A Seal Guides
196 X 6 B-90	N/A 124348	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 196.00 mm	N/A Seal Guides
198x6.00B70	N/A 124349	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 198.00 mm	N/A Seal Guides
198 X 6 B-90	N/A 124350	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 198.00 mm	N/A Seal Guides
200x6.00B70	N/A 124351	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 200.00 mm	N/A Seal Guides
200 X 6 B-90	N/A 124352	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 200.00 mm	N/A Seal Guides

N/A
124328

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 176.00 mm

N/A Seal Guides

180x6.00B70

N/A
124329

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 180.00 mm

N/A Seal Guides

180 X 6 B-90

N/A
124330

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 180.00 mm

N/A Seal Guides

182 X 6 B-70

N/A
124331

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 182.00 mm

N/A Seal Guides

182 X 6 B-90

N/A
124332

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 182.00 mm

N/A Seal Guides

184x6.00B70

N/A
124333

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 184.00 mm

N/A Seal Guides

184 X 6 B-90

N/A
124334

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 184.00 mm

N/A Seal Guides

185x6.00B70

N/A
124335

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 185.00 mm

N/A Seal Guides

185 X 6 B-90

N/A
124336

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 185.00 mm

N/A Seal Guides

188x6.00B70

N/A
124337

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 188.00 mm

N/A Seal Guides

188 X 6 B-90

N/A
124338

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 188.00 mm

N/A Seal Guides

190x6.00B70

N/A
124339

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 190.00 mm

N/A Seal Guides

190 X 6 B-90

N/A
124340

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 190.00 mm

N/A Seal Guides

191.2 X 6 B-70

N/A
124341

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 191.20 mm

N/A Seal Guides

191.2 X 6 B-90

N/A
124342

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 191.20 mm

N/A Seal Guides

193 X 6 B-70

N/A
124343

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 193.00 mm

N/A Seal Guides

193 X 6 B-90

N/A
124344

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 193.00 mm

N/A Seal Guides

195x6.00B70

N/A
124345

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 195.00 mm

N/A Seal Guides

195 X 6 B-90

N/A
124346

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 195.00 mm

N/A Seal Guides

196 X 6 B-70

N/A
124347

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 196.00 mm

N/A Seal Guides

196 X 6 B-90

N/A
124348

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 196.00 mm

N/A Seal Guides

198x6.00B70

N/A
124349

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 198.00 mm

N/A Seal Guides

198 X 6 B-90

N/A
124350

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 198.00 mm

N/A Seal Guides

200x6.00B70

N/A
124351

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 200.00 mm

N/A Seal Guides

200 X 6 B-90

N/A
124352

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 200.00 mm

N/A Seal Guides