Monroe
OneMonroe
Locations Throughout the Country
ISO 9001:2015
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
75.79 X 3.53 B-90 N/A
120970 		N/A Metric Standard O-Ring N/A Buna N/A 234 N/A 3.53 mm N/A 90 N/A 75.79 mm N/A Seal Guides
78.97 X 3.53 B-70 N/A
120971 		N/A Metric Standard O-Ring N/A Buna N/A 235 N/A 3.53 mm N/A 70 N/A 78.97 mm N/A Seal Guides
78.97 X 3.53 B-90 N/A
120972 		N/A Metric Standard O-Ring N/A Buna N/A 235 N/A 3.53 mm N/A 90 N/A 78.97 mm N/A Seal Guides
82.14 X 3.53 B-70 N/A
120973 		N/A Metric Standard O-Ring N/A Buna N/A 236 N/A 3.53 mm N/A 70 N/A 82.14 mm N/A Seal Guides
82.14 X 3.53 B-90 N/A
120974 		N/A Metric Standard O-Ring N/A Buna N/A 236 N/A 3.53 mm N/A 90 N/A 82.14 mm N/A Seal Guides
85.32 X 3.53 B-70 N/A
120975 		N/A Metric Standard O-Ring N/A Buna N/A 237 N/A 3.53 mm N/A 70 N/A 85.32 mm N/A Seal Guides
85.32 X 3.53 B-90 N/A
120976 		N/A Metric Standard O-Ring N/A Buna N/A 237 N/A 3.53 mm N/A 90 N/A 85.32 mm N/A Seal Guides
88.49 X 3.53 B-70 N/A
120977 		N/A Metric Standard O-Ring N/A Buna N/A 238 N/A 3.53 mm N/A 70 N/A 88.49 mm N/A Seal Guides
88.49 X 3.53 B-90 N/A
120978 		N/A Metric Standard O-Ring N/A Buna N/A 238 N/A 3.53 mm N/A 90 N/A 88.49 mm N/A Seal Guides
91.67 X 3.53 B-70 N/A
120979 		N/A Metric Standard O-Ring N/A Buna N/A 239 N/A 3.53 mm N/A 70 N/A 91.67 mm N/A Seal Guides
91.67 X 3.53 B-90 N/A
120980 		N/A Metric Standard O-Ring N/A Buna N/A 239 N/A 3.53 mm N/A 90 N/A 91.67 mm N/A Seal Guides
94.84 X 3.53 B-70 N/A
120981 		N/A Metric Standard O-Ring N/A Buna N/A 240 N/A 3.53 mm N/A 70 N/A 94.84 mm N/A Seal Guides
94.84 X 3.53 B-90 N/A
120982 		N/A Metric Standard O-Ring N/A Buna N/A 240 N/A 3.53 mm N/A 90 N/A 94.84 mm N/A Seal Guides
98.02 X 3.53 B-70 N/A
120983 		N/A Metric Standard O-Ring N/A Buna N/A 241 N/A 3.53 mm N/A 70 N/A 98.02 mm N/A Seal Guides
98.02 X 3.53 B-90 N/A
120984 		N/A Metric Standard O-Ring N/A Buna N/A 241 N/A 3.53 mm N/A 90 N/A 98.02 mm N/A Seal Guides
101.19 X 3.53 B-70 N/A
120985 		N/A Metric Standard O-Ring N/A Buna N/A 242 N/A 3.53 mm N/A 70 N/A 101.19 mm N/A Seal Guides
101.19 X 3.53 B-90 N/A
120986 		N/A Metric Standard O-Ring N/A Buna N/A 242 N/A 3.53 mm N/A 90 N/A 101.19 mm N/A Seal Guides
104.37 X 3.53 B-70 N/A
120987 		N/A Metric Standard O-Ring N/A Buna N/A 243 N/A 3.53 mm N/A 70 N/A 104.37 mm N/A Seal Guides
104.37 X 3.53 B-90 N/A
120988 		N/A Metric Standard O-Ring N/A Buna N/A 243 N/A 3.53 mm N/A 90 N/A 104.37 mm N/A Seal Guides
107.54 X 3.53 B-70 N/A
120989 		N/A Metric Standard O-Ring N/A Buna N/A 244 N/A 3.53 mm N/A 70 N/A 107.54 mm N/A Seal Guides
107.54 X 3.53 B-90 N/A
120990 		N/A Metric Standard O-Ring N/A Buna N/A 244 N/A 3.53 mm N/A 90 N/A 107.54 mm N/A Seal Guides
110.72 X 3.53 B-70 N/A
120991 		N/A Metric Standard O-Ring N/A Buna N/A 246 N/A 3.53 mm N/A 70 N/A 110.72 mm N/A Seal Guides
110.72 X 3.53 B-90 N/A
120992 		N/A Metric Standard O-Ring N/A Buna N/A 246 N/A 3.53 mm N/A 90 N/A 110.72 mm N/A Seal Guides
113.89 X 3.53 B-70 N/A
120993 		N/A Metric Standard O-Ring N/A Buna N/A 246 N/A 3.53 mm N/A 70 N/A 113.89 mm N/A Seal Guides
113.89 X 3.53 B-90 N/A
120994 		N/A Metric Standard O-Ring N/A Buna N/A 246 N/A 3.53 mm N/A 90 N/A 113.89 mm N/A Seal Guides
Unit of Measure
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