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
238x6.00B70	N/A 124405	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 238.00 mm	N/A Seal Guides
238 X 6 B-90	N/A 124406	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 238.00 mm	N/A Seal Guides
240x6.00B70	N/A 124407	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 240.00 mm	N/A Seal Guides
240 X 6 B-90	N/A 124408	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 240.00 mm	N/A Seal Guides
242x6.00B70	N/A 124409	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 242.00 mm	N/A Seal Guides
242 X 6 B-90	N/A 124410	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 242.00 mm	N/A Seal Guides
244x6.00B70	N/A 124411	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 244.00 mm	N/A Seal Guides
244 X 6 B-90	N/A 124412	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 244.00 mm	N/A Seal Guides
247 X 6 B-70	N/A 124413	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 247.00 mm	N/A Seal Guides
247 X 6 B-90	N/A 124414	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 247.00 mm	N/A Seal Guides
249 X 6 B-70	N/A 124415	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 249.00 mm	N/A Seal Guides
249 X 6 B-90	N/A 124416	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 249.00 mm	N/A Seal Guides
250x6.00B70	N/A 124417	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 250.00 mm	N/A Seal Guides
250 X 6 B-90	N/A 124418	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 250.00 mm	N/A Seal Guides
258x6.00B70	N/A 124419	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 258.00 mm	N/A Seal Guides
258 X 6 B-90	N/A 124420	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 258.00 mm	N/A Seal Guides
259 X 6 B-70	N/A 124421	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 259.00 mm	N/A Seal Guides
259 X 6 B-90	N/A 124422	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 259.00 mm	N/A Seal Guides
260x6.00B70	N/A 124423	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 260.00 mm	N/A Seal Guides
260 X 6 B-90	N/A 124424	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 260.00 mm	N/A Seal Guides
262 X 6 B-70	N/A 124425	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 262.00 mm	N/A Seal Guides
262 X 6 B-90	N/A 124426	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 262.00 mm	N/A Seal Guides
265x6.00B70	N/A 124427	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 265.00 mm	N/A Seal Guides
265 X 6 B-90	N/A 124428	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 265.00 mm	N/A Seal Guides
266x6.00B70	N/A 124429	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 266.00 mm	N/A Seal Guides

N/A
124405

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 238.00 mm

N/A Seal Guides

238 X 6 B-90

N/A
124406

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 238.00 mm

N/A Seal Guides

240x6.00B70

N/A
124407

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 240.00 mm

N/A Seal Guides

240 X 6 B-90

N/A
124408

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 240.00 mm

N/A Seal Guides

242x6.00B70

N/A
124409

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 242.00 mm

N/A Seal Guides

242 X 6 B-90

N/A
124410

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 242.00 mm

N/A Seal Guides

244x6.00B70

N/A
124411

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 244.00 mm

N/A Seal Guides

244 X 6 B-90

N/A
124412

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 244.00 mm

N/A Seal Guides

247 X 6 B-70

N/A
124413

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 247.00 mm

N/A Seal Guides

247 X 6 B-90

N/A
124414

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 247.00 mm

N/A Seal Guides

249 X 6 B-70

N/A
124415

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 249.00 mm

N/A Seal Guides

249 X 6 B-90

N/A
124416

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 249.00 mm

N/A Seal Guides

250x6.00B70

N/A
124417

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 250.00 mm

N/A Seal Guides

250 X 6 B-90

N/A
124418

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 250.00 mm

N/A Seal Guides

258x6.00B70

N/A
124419

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 258.00 mm

N/A Seal Guides

258 X 6 B-90

N/A
124420

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 258.00 mm

N/A Seal Guides

259 X 6 B-70

N/A
124421

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 259.00 mm

N/A Seal Guides

259 X 6 B-90

N/A
124422

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 259.00 mm

N/A Seal Guides

260x6.00B70

N/A
124423

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 260.00 mm

N/A Seal Guides

260 X 6 B-90

N/A
124424

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 260.00 mm

N/A Seal Guides

262 X 6 B-70

N/A
124425

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 262.00 mm

N/A Seal Guides

262 X 6 B-90

N/A
124426

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 262.00 mm

N/A Seal Guides

265x6.00B70

N/A
124427

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 265.00 mm

N/A Seal Guides

265 X 6 B-90

N/A
124428

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 265.00 mm

N/A Seal Guides

266x6.00B70

N/A
124429

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 266.00 mm

N/A Seal Guides