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 X 1.5 B-90	N/A 117346	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 19.00 mm
19.5 X 1.5 B-70	N/A 117347	N/A Metric Standard O-Ring	N/A Buna	N/A S20	N/A 1.50 mm	N/A 70	N/A 19.50 mm
19.5 X 1.5 B-90	N/A 117348	N/A Metric Standard O-Ring	N/A Buna	N/A S20	N/A 1.50 mm	N/A 90	N/A 19.50 mm
20 X 1.5 B-70	N/A 117349	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 70	N/A 20.00 mm
20 X 1.5 B-90	N/A 117350	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 20.00 mm
20.5 X 1.5 B-70	N/A 117351	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 70	N/A 20.50 mm
20.5 X 1.5 B-90	N/A 117352	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 20.50 mm
21 X 1.5 B-70	N/A 117353	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 70	N/A 21.00 mm
21 X 1.5 B-90	N/A 117354	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 21.00 mm
21.5 X 1.5 B-70	N/A 117355	N/A Metric Standard O-Ring	N/A Buna	N/A S22	N/A 1.50 mm	N/A 70	N/A 21.50 mm
21.5 X 1.5 B-90	N/A 117356	N/A Metric Standard O-Ring	N/A Buna	N/A S22	N/A 1.50 mm	N/A 90	N/A 21.50 mm
22 X 1.5 B-70	N/A 117357	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 70	N/A 22.00 mm
22 X 1.5 B-90	N/A 117358	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 22.00 mm
22.5 X 1.5 B-70	N/A 117359	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 70	N/A 22.50 mm
22.5 X 1.5 B-90	N/A 117360	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 22.50 mm
23 X 1.5 B-70	N/A 117361	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 70	N/A 23.00 mm
23 X 1.5 B-90	N/A 117362	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 23.00 mm
23.5 X 1.5 B-70	N/A 117363	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 70	N/A 23.50 mm
23.5 X 1.5 B-90	N/A 117364	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 23.50 mm
24 X 1.5 B-70	N/A 117365	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 70	N/A 24.00 mm
24 X 1.5 B-90	N/A 117366	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 24.00 mm
24.5 X 1.5 B-70	N/A 117367	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 70	N/A 24.50 mm
24.5 X 1.5 B-90	N/A 117368	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 24.50 mm
25 X 1.5 B-70	N/A 117369	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 70	N/A 25.00 mm
25 X 1.5 B-90	N/A 117370	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 25.00 mm

N/A
117346

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 19.00 mm

19.5 X 1.5 B-70

N/A
117347

N/A Metric Standard O-Ring

N/A Buna

N/A S20

N/A 1.50 mm

N/A 70

N/A 19.50 mm

19.5 X 1.5 B-90

N/A
117348

N/A Metric Standard O-Ring

N/A Buna

N/A S20

N/A 1.50 mm

N/A 90

N/A 19.50 mm

20 X 1.5 B-70

N/A
117349

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 70

N/A 20.00 mm

20 X 1.5 B-90

N/A
117350

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 20.00 mm

20.5 X 1.5 B-70

N/A
117351

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 70

N/A 20.50 mm

20.5 X 1.5 B-90

N/A
117352

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 20.50 mm

21 X 1.5 B-70

N/A
117353

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 70

N/A 21.00 mm

21 X 1.5 B-90

N/A
117354

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 21.00 mm

21.5 X 1.5 B-70

N/A
117355

N/A Metric Standard O-Ring

N/A Buna

N/A S22

N/A 1.50 mm

N/A 70

N/A 21.50 mm

21.5 X 1.5 B-90

N/A
117356

N/A Metric Standard O-Ring

N/A Buna

N/A S22

N/A 1.50 mm

N/A 90

N/A 21.50 mm

22 X 1.5 B-70

N/A
117357

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 70

N/A 22.00 mm

22 X 1.5 B-90

N/A
117358

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 22.00 mm

22.5 X 1.5 B-70

N/A
117359

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 70

N/A 22.50 mm

22.5 X 1.5 B-90

N/A
117360

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 22.50 mm

23 X 1.5 B-70

N/A
117361

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 70

N/A 23.00 mm

23 X 1.5 B-90

N/A
117362

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 23.00 mm

23.5 X 1.5 B-70

N/A
117363

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 70

N/A 23.50 mm

23.5 X 1.5 B-90

N/A
117364

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 23.50 mm

24 X 1.5 B-70

N/A
117365

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 70

N/A 24.00 mm

24 X 1.5 B-90

N/A
117366

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 24.00 mm

24.5 X 1.5 B-70

N/A
117367

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 70

N/A 24.50 mm

24.5 X 1.5 B-90

N/A
117368

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 24.50 mm

25 X 1.5 B-70

N/A
117369

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 70

N/A 25.00 mm

25 X 1.5 B-90

N/A
117370

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 25.00 mm