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
24.3 X 2.4 B-70	N/A 118431	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 24.30 mm	N/A Seal Guides
24.3 X 2.4 B-90	N/A 118432	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 24.30 mm	N/A Seal Guides
24.5 X 2.4 B-70	N/A 118433	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 24.50 mm	N/A Seal Guides
24.5 X 2.4 B-90	N/A 118434	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 24.50 mm	N/A Seal Guides
24.6x2.40B70	N/A 118435	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 24.60 mm	N/A Seal Guides
24.6 X 2.4 B-90	N/A 118436	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 24.60 mm	N/A Seal Guides
25x2.40B70	N/A 118437	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 25.00 mm	N/A Seal Guides
25 X 2.4 B-90	N/A 118438	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 25.00 mm	N/A Seal Guides
25.3x2.40B70	N/A 118439	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 25.30 mm	N/A Seal Guides
25.3 X 2.4 B-90	N/A 118440	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 25.30 mm	N/A Seal Guides
25.6 X 2.4 B-70	N/A 118441	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 25.60 mm	N/A Seal Guides
25.6 X 2.4 B-90	N/A 118442	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 25.60 mm	N/A Seal Guides
27.3x2.40B70	N/A 118443	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 27.30 mm	N/A Seal Guides
27.3 X 2.4 B-90	N/A 118444	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 27.30 mm	N/A Seal Guides
27.5 X 2.4 B-70	N/A 118445	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 27.50 mm	N/A Seal Guides
27.5 X 2.4 B-90	N/A 118446	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 27.50 mm	N/A Seal Guides
27.6x2.40B70	N/A 118447	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 27.60 mm	N/A Seal Guides
27.6 X 2.4 B-90	N/A 118448	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 27.60 mm	N/A Seal Guides
29.6x2.40B70	N/A 118449	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 29.60 mm	N/A Seal Guides
29.6 X 2.4 B-90	N/A 118450	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 29.60 mm	N/A Seal Guides
30.3x2.40B70	N/A 118451	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 30.30 mm	N/A Seal Guides
30.3 X 2.4 B-90	N/A 118452	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 30.30 mm	N/A Seal Guides
31.6x2.40B70	N/A 118453	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 31.60 mm	N/A Seal Guides
31.6 X 2.4 B-90	N/A 118454	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 90	N/A 31.60 mm	N/A Seal Guides
33.3x2.40B70	N/A 118455	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.40 mm	N/A 70	N/A 33.30 mm	N/A Seal Guides

N/A
118431

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 24.30 mm

N/A Seal Guides

24.3 X 2.4 B-90

N/A
118432

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 24.30 mm

N/A Seal Guides

24.5 X 2.4 B-70

N/A
118433

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 24.50 mm

N/A Seal Guides

24.5 X 2.4 B-90

N/A
118434

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 24.50 mm

N/A Seal Guides

24.6x2.40B70

N/A
118435

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 24.60 mm

N/A Seal Guides

24.6 X 2.4 B-90

N/A
118436

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 24.60 mm

N/A Seal Guides

25x2.40B70

N/A
118437

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 25.00 mm

N/A Seal Guides

25 X 2.4 B-90

N/A
118438

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 25.00 mm

N/A Seal Guides

25.3x2.40B70

N/A
118439

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 25.30 mm

N/A Seal Guides

25.3 X 2.4 B-90

N/A
118440

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 25.30 mm

N/A Seal Guides

25.6 X 2.4 B-70

N/A
118441

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 25.60 mm

N/A Seal Guides

25.6 X 2.4 B-90

N/A
118442

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 25.60 mm

N/A Seal Guides

27.3x2.40B70

N/A
118443

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 27.30 mm

N/A Seal Guides

27.3 X 2.4 B-90

N/A
118444

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 27.30 mm

N/A Seal Guides

27.5 X 2.4 B-70

N/A
118445

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 27.50 mm

N/A Seal Guides

27.5 X 2.4 B-90

N/A
118446

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 27.50 mm

N/A Seal Guides

27.6x2.40B70

N/A
118447

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 27.60 mm

N/A Seal Guides

27.6 X 2.4 B-90

N/A
118448

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 27.60 mm

N/A Seal Guides

29.6x2.40B70

N/A
118449

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 29.60 mm

N/A Seal Guides

29.6 X 2.4 B-90

N/A
118450

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 29.60 mm

N/A Seal Guides

30.3x2.40B70

N/A
118451

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 30.30 mm

N/A Seal Guides

30.3 X 2.4 B-90

N/A
118452

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 30.30 mm

N/A Seal Guides

31.6x2.40B70

N/A
118453

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 31.60 mm

N/A Seal Guides

31.6 X 2.4 B-90

N/A
118454

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 90

N/A 31.60 mm

N/A Seal Guides

33.3x2.40B70

N/A
118455

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.40 mm

N/A 70

N/A 33.30 mm

N/A Seal Guides