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
8.6x2.40B70	N/A 118329	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 8.60 mm
8.6 X 2.4 B-90	N/A 118330	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 8.60 mm
9.3x2.40B70	N/A 118331	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 9.30 mm
9.3 X 2.4 B-90	N/A 118332	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 9.30 mm
9.6x2.40B70	N/A 118333	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 9.60 mm
9.6 X 2.4 B-90	N/A 118334	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 9.60 mm
9.8x2.40B70	N/A 118335	N/A Metric Standard O-Ring	N/A Buna	N/A P10A	N/A 2.40 mm	N/A 70	N/A 9.80 mm
9.8 X 2.4 B-90	N/A 118336	N/A Metric Standard O-Ring	N/A Buna	N/A P10A	N/A 2.40 mm	N/A 90	N/A 9.80 mm
10.3x2.40B70	N/A 118337	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 10.30 mm
10.3 X 2.4 B-90	N/A 118338	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 10.30 mm
10.5 X 2.4 B-70	N/A 118339	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 10.50 mm
10.5 X 2.4 B-90	N/A 118340	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 10.50 mm
10.6x2.40B70	N/A 118341	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 10.60 mm
10.6 X 2.4 B-90	N/A 118342	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 10.60 mm
10.8x2.40B70	N/A 118343	N/A Metric Standard O-Ring	N/A Buna	N/A P11	N/A 2.40 mm	N/A 70	N/A 10.80 mm
10.8 X 2.4 B-90	N/A 118344	N/A Metric Standard O-Ring	N/A Buna	N/A P11	N/A 2.40 mm	N/A 90	N/A 10.80 mm
11x2.40B70	N/A 118345	N/A Metric Standard O-Ring	N/A Buna	N/A P11.2	N/A 2.40 mm	N/A 70	N/A 11.00 mm
11 X 2.4 B-90	N/A 118346	N/A Metric Standard O-Ring	N/A Buna	N/A P11.2	N/A 2.40 mm	N/A 90	N/A 11.00 mm
11.3x2.40B70	N/A 118347	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 11.30 mm
11.3 X 2.4 B-90	N/A 118348	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 11.30 mm
11.5 X 2.4 B-70	N/A 118349	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 11.50 mm
11.5 X 2.4 B-90	N/A 118350	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 11.50 mm
11.6x2.40B70	N/A 118351	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 11.60 mm
11.6 X 2.4 B-90	N/A 118352	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 11.60 mm
11.8x2.40B70	N/A 118353	N/A Metric Standard O-Ring	N/A Buna	N/A P12	N/A 2.40 mm	N/A 70	N/A 11.80 mm

N/A
118329

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 8.60 mm

8.6 X 2.4 B-90

N/A
118330

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 8.60 mm

9.3x2.40B70

N/A
118331

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 9.30 mm

9.3 X 2.4 B-90

N/A
118332

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 9.30 mm

9.6x2.40B70

N/A
118333

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 9.60 mm

9.6 X 2.4 B-90

N/A
118334

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 9.60 mm

9.8x2.40B70

N/A
118335

N/A Metric Standard O-Ring

N/A Buna

N/A P10A

N/A 2.40 mm

N/A 70

N/A 9.80 mm

9.8 X 2.4 B-90

N/A
118336

N/A Metric Standard O-Ring

N/A Buna

N/A P10A

N/A 2.40 mm

N/A 90

N/A 9.80 mm

10.3x2.40B70

N/A
118337

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 10.30 mm

10.3 X 2.4 B-90

N/A
118338

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 10.30 mm

10.5 X 2.4 B-70

N/A
118339

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 10.50 mm

10.5 X 2.4 B-90

N/A
118340

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 10.50 mm

10.6x2.40B70

N/A
118341

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 10.60 mm

10.6 X 2.4 B-90

N/A
118342

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 10.60 mm

10.8x2.40B70

N/A
118343

N/A Metric Standard O-Ring

N/A Buna

N/A P11

N/A 2.40 mm

N/A 70

N/A 10.80 mm

10.8 X 2.4 B-90

N/A
118344

N/A Metric Standard O-Ring

N/A Buna

N/A P11

N/A 2.40 mm

N/A 90

N/A 10.80 mm

11x2.40B70

N/A
118345

N/A Metric Standard O-Ring

N/A Buna

N/A P11.2

N/A 2.40 mm

N/A 70

N/A 11.00 mm

11 X 2.4 B-90

N/A
118346

N/A Metric Standard O-Ring

N/A Buna

N/A P11.2

N/A 2.40 mm

N/A 90

N/A 11.00 mm

11.3x2.40B70

N/A
118347

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 11.30 mm

11.3 X 2.4 B-90

N/A
118348

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 11.30 mm

11.5 X 2.4 B-70

N/A
118349

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 11.50 mm

11.5 X 2.4 B-90

N/A
118350

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 11.50 mm

11.6x2.40B70

N/A
118351

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 11.60 mm

11.6 X 2.4 B-90

N/A
118352

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 11.60 mm

11.8x2.40B70

N/A
118353

N/A Metric Standard O-Ring

N/A Buna

N/A P12

N/A 2.40 mm

N/A 70

N/A 11.80 mm