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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.

Metric O-Rings
Unit of Measure
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Item #

IntegrationID

Type

Material

Cross Reference

Cross Section Width

Durometer

Inside Diameter

Quantity
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
Unit of Measure
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