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
19.8 X 2.4 B-90	N/A 118406	N/A Metric Standard O-Ring	N/A Buna	N/A P20	N/A 2.40 mm	N/A 90	N/A 19.80 mm
20.3x2.40B70	N/A 118407	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 20.30 mm
20.3 X 2.4 B-90	N/A 118408	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 20.30 mm
20.5x2.40B70	N/A 118409	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 20.50 mm
20.5 X 2.4 B-90	N/A 118410	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 20.50 mm
20.8x2.40B70	N/A 118411	N/A Metric Standard O-Ring	N/A Buna	N/A P21	N/A 2.40 mm	N/A 70	N/A 20.80 mm
20.8 X 2.4 B-90	N/A 118412	N/A Metric Standard O-Ring	N/A Buna	N/A P21	N/A 2.40 mm	N/A 90	N/A 20.80 mm
21.3x2.40B70	N/A 118413	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 21.30 mm
21.3 X 2.4 B-90	N/A 118414	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 21.30 mm
21.5 X 2.4 B-70	N/A 118415	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 21.50 mm
21.5 X 2.4 B-90	N/A 118416	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 21.50 mm
21.6x2.40B70	N/A 118417	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 21.60 mm
21.6 X 2.4 B-90	N/A 118418	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 21.60 mm
21.8x2.40B70	N/A 118419	N/A Metric Standard O-Ring	N/A Buna	N/A P22	N/A 2.40 mm	N/A 70	N/A 21.80 mm
21.8 X 2.4 B-90	N/A 118420	N/A Metric Standard O-Ring	N/A Buna	N/A P22	N/A 2.40 mm	N/A 90	N/A 21.80 mm
22.3x2.40B70	N/A 118421	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 22.30 mm
22.3 X 2.4 B-90	N/A 118422	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 22.30 mm
22.6 X 2.4 B-70	N/A 118423	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 22.60 mm
22.6 X 2.4 B-90	N/A 118424	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 22.60 mm
23.3x2.40B70	N/A 118425	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 23.30 mm
23.3 X 2.4 B-90	N/A 118426	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 23.30 mm
23.5x2.40B70	N/A 118427	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 23.50 mm
23.5 X 2.4 B-90	N/A 118428	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 23.50 mm
23.6 X 2.4 B-70	N/A 118429	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 23.60 mm
23.6 X 2.4 B-90	N/A 118430	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 23.60 mm

N/A
118406

N/A Metric Standard O-Ring

N/A Buna

N/A P20

N/A 2.40 mm

N/A 90

N/A 19.80 mm

20.3x2.40B70

N/A
118407

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 20.30 mm

20.3 X 2.4 B-90

N/A
118408

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 20.30 mm

20.5x2.40B70

N/A
118409

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 20.50 mm

20.5 X 2.4 B-90

N/A
118410

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 20.50 mm

20.8x2.40B70

N/A
118411

N/A Metric Standard O-Ring

N/A Buna

N/A P21

N/A 2.40 mm

N/A 70

N/A 20.80 mm

20.8 X 2.4 B-90

N/A
118412

N/A Metric Standard O-Ring

N/A Buna

N/A P21

N/A 2.40 mm

N/A 90

N/A 20.80 mm

21.3x2.40B70

N/A
118413

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 21.30 mm

21.3 X 2.4 B-90

N/A
118414

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 21.30 mm

21.5 X 2.4 B-70

N/A
118415

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 21.50 mm

21.5 X 2.4 B-90

N/A
118416

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 21.50 mm

21.6x2.40B70

N/A
118417

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 21.60 mm

21.6 X 2.4 B-90

N/A
118418

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 21.60 mm

21.8x2.40B70

N/A
118419

N/A Metric Standard O-Ring

N/A Buna

N/A P22

N/A 2.40 mm

N/A 70

N/A 21.80 mm

21.8 X 2.4 B-90

N/A
118420

N/A Metric Standard O-Ring

N/A Buna

N/A P22

N/A 2.40 mm

N/A 90

N/A 21.80 mm

22.3x2.40B70

N/A
118421

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 22.30 mm

22.3 X 2.4 B-90

N/A
118422

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 22.30 mm

22.6 X 2.4 B-70

N/A
118423

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 22.60 mm

22.6 X 2.4 B-90

N/A
118424

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 22.60 mm

23.3x2.40B70

N/A
118425

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 23.30 mm

23.3 X 2.4 B-90

N/A
118426

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 23.30 mm

23.5x2.40B70

N/A
118427

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 23.50 mm

23.5 X 2.4 B-90

N/A
118428

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 23.50 mm

23.6 X 2.4 B-70

N/A
118429

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 23.60 mm

23.6 X 2.4 B-90

N/A
118430

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 23.60 mm