Monroe
OneMonroe
Locations Throughout the Country
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Tel: (877) 740-2007
Fax: (800) 453-9683
Email: sales@askmonroe.com
Website: monroeengineering.com
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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

Product Guides

Quantity
174.2 X 5.7 B-70 N/A
123953 		N/A Metric Standard O-Ring N/A Buna N/A N/A 5.70 mm N/A 70 N/A 174.20 mm N/A Seal Guides
174.2 X 5.7 B-90 N/A
123954 		N/A Metric Standard O-Ring N/A Buna N/A N/A 5.70 mm N/A 90 N/A 174.20 mm N/A Seal Guides
174.3 X 5.7 B-70 N/A
123955 		N/A Metric Standard O-Ring N/A Buna N/A G175 N/A 5.70 mm N/A 70 N/A 174.30 mm N/A Seal Guides
174.3 X 5.7 B-90 N/A
123956 		N/A Metric Standard O-Ring N/A Buna N/A G175 N/A 5.70 mm N/A 90 N/A 174.30 mm N/A Seal Guides
179.3 X 5.7 B-70 N/A
123957 		N/A Metric Standard O-Ring N/A Buna N/A G180 N/A 5.70 mm N/A 70 N/A 179.30 mm N/A Seal Guides
179.3 X 5.7 B-90 N/A
123958 		N/A Metric Standard O-Ring N/A Buna N/A G180 N/A 5.70 mm N/A 90 N/A 179.30 mm N/A Seal Guides
184.3 X 5.7 B-70 N/A
123959 		N/A Metric Standard O-Ring N/A Buna N/A G185 N/A 5.70 mm N/A 70 N/A 184.30 mm N/A Seal Guides
184.3 X 5.7 B-90 N/A
123960 		N/A Metric Standard O-Ring N/A Buna N/A G185 N/A 5.70 mm N/A 90 N/A 184.30 mm N/A Seal Guides
189.2 X 5.7 B-70 N/A
123961 		N/A Metric Standard O-Ring N/A Buna N/A N/A 5.70 mm N/A 70 N/A 189.20 mm N/A Seal Guides
189.2 X 5.7 B-90 N/A
123962 		N/A Metric Standard O-Ring N/A Buna N/A N/A 5.70 mm N/A 90 N/A 189.20 mm N/A Seal Guides
189.3 X 5.7 B-70 N/A
123963 		N/A Metric Standard O-Ring N/A Buna N/A G190 N/A 5.70 mm N/A 70 N/A 189.30 mm N/A Seal Guides
189.3 X 5.7 B-90 N/A
123964 		N/A Metric Standard O-Ring N/A Buna N/A G190 N/A 5.70 mm N/A 90 N/A 189.30 mm N/A Seal Guides
194.2 X 5.7 B-70 N/A
123965 		N/A Metric Standard O-Ring N/A Buna N/A N/A 5.70 mm N/A 70 N/A 194.20 mm N/A Seal Guides
194.2 X 5.7 B-90 N/A
123966 		N/A Metric Standard O-Ring N/A Buna N/A N/A 5.70 mm N/A 90 N/A 194.20 mm N/A Seal Guides
194.3 X 5.7 B-70 N/A
123967 		N/A Metric Standard O-Ring N/A Buna N/A G195 N/A 5.70 mm N/A 70 N/A 194.30 mm N/A Seal Guides
194.3 X 5.7 B-90 N/A
123968 		N/A Metric Standard O-Ring N/A Buna N/A G195 N/A 5.70 mm N/A 90 N/A 194.30 mm N/A Seal Guides
199.2 X 5.7 B-70 N/A
123969 		N/A Metric Standard O-Ring N/A Buna N/A N/A 5.70 mm N/A 70 N/A 199.20 mm N/A Seal Guides
199.2 X 5.7 B-90 N/A
123970 		N/A Metric Standard O-Ring N/A Buna N/A N/A 5.70 mm N/A 90 N/A 199.20 mm N/A Seal Guides
199.3 X 5.7 B-70 N/A
123971 		N/A Metric Standard O-Ring N/A Buna N/A G200 N/A 5.70 mm N/A 70 N/A 199.30 mm N/A Seal Guides
199.3 X 5.7 B-90 N/A
123972 		N/A Metric Standard O-Ring N/A Buna N/A G200 N/A 5.70 mm N/A 90 N/A 199.30 mm N/A Seal Guides
204.2 X 5.7 B-70 N/A
123973 		N/A Metric Standard O-Ring N/A Buna N/A N/A 5.70 mm N/A 70 N/A 204.20 mm N/A Seal Guides
204.2 X 5.7 B-90 N/A
123974 		N/A Metric Standard O-Ring N/A Buna N/A N/A 5.70 mm N/A 90 N/A 204.20 mm N/A Seal Guides
209.2 X 5.7 B-70 N/A
123975 		N/A Metric Standard O-Ring N/A Buna N/A N/A 5.70 mm N/A 70 N/A 209.20 mm N/A Seal Guides
209.2 X 5.7 B-90 N/A
123976 		N/A Metric Standard O-Ring N/A Buna N/A N/A 5.70 mm N/A 90 N/A 209.20 mm N/A Seal Guides
209.3 X 5.7 B-70 N/A
123977 		N/A Metric Standard O-Ring N/A Buna N/A G210 N/A 5.70 mm N/A 70 N/A 209.30 mm N/A Seal Guides
Unit of Measure
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