• Metric 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.

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Cross Section Width (mm)

Durometer

Inside Diameter (mm)

Item #

IntegrationID

Type

Material

Cross Reference

Cross Section Width

Durometer

Inside Diameter

N/A
123453 		N/A Metric Standard O-Ring N/A Buna N/A 309 N/A 5.33 mm N/A 70 N/A 10.46 mm
N/A
123454 		N/A Metric Standard O-Ring N/A Buna N/A 309 N/A 5.33 mm N/A 90 N/A 10.46 mm
N/A
123455 		N/A Metric Standard O-Ring N/A Buna N/A 310 N/A 5.33 mm N/A 70 N/A 12.07 mm
N/A
123456 		N/A Metric Standard O-Ring N/A Buna N/A 310 N/A 5.33 mm N/A 90 N/A 12.07 mm
N/A
123457 		N/A Metric Standard O-Ring N/A Buna N/A 311 N/A 5.33 mm N/A 70 N/A 13.64 mm
N/A
123458 		N/A Metric Standard O-Ring N/A Buna N/A 311 N/A 5.33 mm N/A 90 N/A 13.64 mm
N/A
123459 		N/A Metric Standard O-Ring N/A Buna N/A 312 N/A 5.33 mm N/A 70 N/A 15.24 mm
N/A
123460 		N/A Metric Standard O-Ring N/A Buna N/A 312 N/A 5.33 mm N/A 90 N/A 15.24 mm
N/A
123461 		N/A Metric Standard O-Ring N/A Buna N/A 313 N/A 5.33 mm N/A 70 N/A 16.81 mm
N/A
123462 		N/A Metric Standard O-Ring N/A Buna N/A 313 N/A 5.33 mm N/A 90 N/A 16.81 mm
N/A
123463 		N/A Metric Standard O-Ring N/A Buna N/A 314 N/A 5.33 mm N/A 70 N/A 18.42 mm
N/A
123464 		N/A Metric Standard O-Ring N/A Buna N/A 314 N/A 5.33 mm N/A 90 N/A 18.42 mm
N/A
123465 		N/A Metric Standard O-Ring N/A Buna N/A 315 N/A 5.33 mm N/A 70 N/A 19.99 mm
N/A
123466 		N/A Metric Standard O-Ring N/A Buna N/A 315 N/A 5.33 mm N/A 90 N/A 19.99 mm
N/A
123467 		N/A Metric Standard O-Ring N/A Buna N/A 316 N/A 5.33 mm N/A 70 N/A 21.59 mm
N/A
123468 		N/A Metric Standard O-Ring N/A Buna N/A 316 N/A 5.33 mm N/A 90 N/A 21.59 mm
N/A
123469 		N/A Metric Standard O-Ring N/A Buna N/A 317 N/A 5.33 mm N/A 70 N/A 23.16 mm
N/A
123470 		N/A Metric Standard O-Ring N/A Buna N/A 317 N/A 5.33 mm N/A 90 N/A 23.16 mm
N/A
123471 		N/A Metric Standard O-Ring N/A Buna N/A 318 N/A 5.33 mm N/A 70 N/A 24.77 mm
N/A
123472 		N/A Metric Standard O-Ring N/A Buna N/A 318 N/A 5.33 mm N/A 90 N/A 24.77 mm
N/A
123473 		N/A Metric Standard O-Ring N/A Buna N/A 319 N/A 5.33 mm N/A 70 N/A 26.34 mm
N/A
123474 		N/A Metric Standard O-Ring N/A Buna N/A 319 N/A 5.33 mm N/A 90 N/A 26.34 mm
N/A
123475 		N/A Metric Standard O-Ring N/A Buna N/A 320 N/A 5.33 mm N/A 70 N/A 27.94 mm
N/A
123476 		N/A Metric Standard O-Ring N/A Buna N/A 320 N/A 5.33 mm N/A 90 N/A 27.94 mm
N/A
123477 		N/A Metric Standard O-Ring N/A Buna N/A 321 N/A 5.33 mm N/A 70 N/A 29.51 mm
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