• 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
117771 		N/A Metric Standard O-Ring N/A Buna N/A BS548 N/A 1.78 mm N/A 70 N/A 129.40 mm
N/A
117772 		N/A Metric Standard O-Ring N/A Buna N/A BS548 N/A 1.78 mm N/A 90 N/A 129.40 mm
N/A
117773 		N/A Metric Standard O-Ring N/A Buna N/A 50 N/A 1.78 mm N/A 70 N/A 133.07 mm
N/A
117774 		N/A Metric Standard O-Ring N/A Buna N/A 50 N/A 1.78 mm N/A 90 N/A 133.07 mm
N/A
117775 		N/A Metric Standard O-Ring N/A Buna N/A BS550 N/A 1.78 mm N/A 70 N/A 135.76 mm
N/A
117776 		N/A Metric Standard O-Ring N/A Buna N/A BS550 N/A 1.78 mm N/A 90 N/A 135.76 mm
N/A
117777 		N/A Metric Standard O-Ring N/A Buna N/A BS551 N/A 1.78 mm N/A 70 N/A 138.94 mm
N/A
117778 		N/A Metric Standard O-Ring N/A Buna N/A BS551 N/A 1.78 mm N/A 90 N/A 138.94 mm
N/A
117779 		N/A Metric Standard O-Ring N/A Buna N/A BS552 N/A 1.78 mm N/A 70 N/A 142.11 mm
N/A
117780 		N/A Metric Standard O-Ring N/A Buna N/A BS552 N/A 1.78 mm N/A 90 N/A 142.11 mm
N/A
117781 		N/A Metric Standard O-Ring N/A Buna N/A BS553 N/A 1.78 mm N/A 70 N/A 145.29 mm
N/A
117782 		N/A Metric Standard O-Ring N/A Buna N/A BS553 N/A 1.78 mm N/A 90 N/A 145.29 mm
N/A
117783 		N/A Metric Standard O-Ring N/A Buna N/A BS554 N/A 1.78 mm N/A 70 N/A 148.46 mm
N/A
117784 		N/A Metric Standard O-Ring N/A Buna N/A BS554 N/A 1.78 mm N/A 90 N/A 148.46 mm
N/A
117785 		N/A Metric Standard O-Ring N/A Buna N/A BS555 N/A 1.78 mm N/A 70 N/A 151.64 mm
N/A
117786 		N/A Metric Standard O-Ring N/A Buna N/A BS555 N/A 1.78 mm N/A 90 N/A 151.64 mm
N/A
117787 		N/A Metric Standard O-Ring N/A Buna N/A BS556 N/A 1.78 mm N/A 70 N/A 154.81 mm
N/A
117788 		N/A Metric Standard O-Ring N/A Buna N/A BS556 N/A 1.78 mm N/A 90 N/A 154.81 mm
N/A
117789 		N/A Metric Standard O-Ring N/A Buna N/A BS557 N/A 1.78 mm N/A 70 N/A 158.00 mm
N/A
117790 		N/A Metric Standard O-Ring N/A Buna N/A BS557 N/A 1.78 mm N/A 90 N/A 158.00 mm
N/A
117791 		N/A Metric Standard O-Ring N/A Buna N/A BS558 N/A 1.78 mm N/A 70 N/A 161.16 mm
N/A
117792 		N/A Metric Standard O-Ring N/A Buna N/A BS558 N/A 1.78 mm N/A 90 N/A 161.16 mm
N/A
117793 		N/A Metric Standard O-Ring N/A Buna N/A BS559 N/A 1.78 mm N/A 70 N/A 164.34 mm
N/A
117794 		N/A Metric Standard O-Ring N/A Buna N/A BS559 N/A 1.78 mm N/A 90 N/A 164.34 mm
N/A
117795 		N/A Metric Standard O-Ring N/A Buna N/A BS560 N/A 1.78 mm N/A 70 N/A 167.51 mm
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