• 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
121395 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 70 N/A 68.00 mm
N/A
121396 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 90 N/A 68.00 mm
N/A
121397 		N/A Metric Standard O-Ring N/A Buna N/A V70 N/A 4.00 mm N/A 70 N/A 69.00 mm
N/A
121398 		N/A Metric Standard O-Ring N/A Buna N/A V70 N/A 4.00 mm N/A 90 N/A 69.00 mm
N/A
121399 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 70 N/A 70.00 mm
N/A
121400 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 90 N/A 70.00 mm
N/A
121401 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 70 N/A 71.00 mm
N/A
121402 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 90 N/A 71.00 mm
N/A
121403 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 70 N/A 72.00 mm
N/A
121404 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 90 N/A 72.00 mm
N/A
121405 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 70 N/A 73.00 mm
N/A
121406 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 90 N/A 73.00 mm
N/A
121407 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 70 N/A 74.00 mm
N/A
121408 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 90 N/A 74.00 mm
N/A
121409 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 70 N/A 75.00 mm
N/A
121410 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 90 N/A 75.00 mm
N/A
121411 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 70 N/A 76.00 mm
N/A
121412 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 90 N/A 76.00 mm
N/A
121413 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 70 N/A 77.00 mm
N/A
121414 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 90 N/A 77.00 mm
N/A
121415 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 70 N/A 78.00 mm
N/A
121416 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 90 N/A 78.00 mm
N/A
121417 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 70 N/A 79.00 mm
N/A
121418 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 90 N/A 79.00 mm
N/A
121419 		N/A Metric Standard O-Ring N/A Buna N/A N/A 4.00 mm N/A 70 N/A 80.00 mm
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