Metric Buna 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.

Item #	IntegrationID	Type	Material	Cross Reference	Cross Section Width	Durometer	Inside Diameter	Product Guides
89.2 X 5.7 B-90	N/A 123828	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 5.70 mm	N/A 90	N/A 89.20 mm	N/A Seal Guides
89.3 X 5.7 B-70	N/A 123829	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 5.70 mm	N/A 70	N/A 89.30 mm	N/A Seal Guides
89.3 X 5.7 B-90	N/A 123830	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 5.70 mm	N/A 90	N/A 89.30 mm	N/A Seal Guides
89.6 X 5.7 B-70	N/A 123831	N/A Metric Standard O-Ring	N/A Buna	N/A P90	N/A 5.70 mm	N/A 70	N/A 89.60 mm	N/A Seal Guides
89.6 X 5.7 B-90	N/A 123832	N/A Metric Standard O-Ring	N/A Buna	N/A P90	N/A 5.70 mm	N/A 90	N/A 89.60 mm	N/A Seal Guides
92.2 X 5.7 B-70	N/A 123833	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 5.70 mm	N/A 70	N/A 92.20 mm	N/A Seal Guides
92.2 X 5.7 B-90	N/A 123834	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 5.70 mm	N/A 90	N/A 92.20 mm	N/A Seal Guides
94 X 5.7 B-70	N/A 123835	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 5.70 mm	N/A 70	N/A 94.00 mm	N/A Seal Guides
94 X 5.7 B-90	N/A 123836	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 5.70 mm	N/A 90	N/A 94.00 mm	N/A Seal Guides
94.1 X 5.7 B-70	N/A 123837	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 5.70 mm	N/A 70	N/A 94.10 mm	N/A Seal Guides
94.1 X 5.7 B-90	N/A 123838	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 5.70 mm	N/A 90	N/A 94.10 mm	N/A Seal Guides
94.2 X 5.7 B-70	N/A 123839	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 5.70 mm	N/A 70	N/A 94.20 mm	N/A Seal Guides
94.2 X 5.7 B-90	N/A 123840	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 5.70 mm	N/A 90	N/A 94.20 mm	N/A Seal Guides
94.3 X 5.7 B-70	N/A 123841	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 5.70 mm	N/A 70	N/A 94.30 mm	N/A Seal Guides
94.3 X 5.7 B-90	N/A 123842	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 5.70 mm	N/A 90	N/A 94.30 mm	N/A Seal Guides
94.6 X 5.7 B-70	N/A 123843	N/A Metric Standard O-Ring	N/A Buna	N/A P95	N/A 5.70 mm	N/A 70	N/A 94.60 mm	N/A Seal Guides
94.6 X 5.7 B-90	N/A 123844	N/A Metric Standard O-Ring	N/A Buna	N/A P95	N/A 5.70 mm	N/A 90	N/A 94.60 mm	N/A Seal Guides
97.2 X 5.7 B-70	N/A 123845	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 5.70 mm	N/A 70	N/A 97.20 mm	N/A Seal Guides
97.2 X 5.7 B-90	N/A 123846	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 5.70 mm	N/A 90	N/A 97.20 mm	N/A Seal Guides
99 X 5.7 B-70	N/A 123847	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 5.70 mm	N/A 70	N/A 99.00 mm	N/A Seal Guides
99 X 5.7 B-90	N/A 123848	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 5.70 mm	N/A 90	N/A 99.00 mm	N/A Seal Guides
99.1 X 5.7 B-70	N/A 123849	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 5.70 mm	N/A 70	N/A 99.10 mm	N/A Seal Guides
99.1 X 5.7 B-90	N/A 123850	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 5.70 mm	N/A 90	N/A 99.10 mm	N/A Seal Guides
99.2 X 5.7 B-70	N/A 123851	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 5.70 mm	N/A 70	N/A 99.20 mm	N/A Seal Guides
99.2 X 5.7 B-90	N/A 123852	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 5.70 mm	N/A 90	N/A 99.20 mm	N/A Seal Guides

N/A
123828

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 5.70 mm

N/A 90

N/A 89.20 mm

N/A Seal Guides

89.3 X 5.7 B-70

N/A
123829

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 5.70 mm

N/A 70

N/A 89.30 mm

N/A Seal Guides

89.3 X 5.7 B-90

N/A
123830

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 5.70 mm

N/A 90

N/A 89.30 mm

N/A Seal Guides

89.6 X 5.7 B-70

N/A
123831

N/A Metric Standard O-Ring

N/A Buna

N/A P90

N/A 5.70 mm

N/A 70

N/A 89.60 mm

N/A Seal Guides

89.6 X 5.7 B-90

N/A
123832

N/A Metric Standard O-Ring

N/A Buna

N/A P90

N/A 5.70 mm

N/A 90

N/A 89.60 mm

N/A Seal Guides

92.2 X 5.7 B-70

N/A
123833

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 5.70 mm

N/A 70

N/A 92.20 mm

N/A Seal Guides

92.2 X 5.7 B-90

N/A
123834

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 5.70 mm

N/A 90

N/A 92.20 mm

N/A Seal Guides

94 X 5.7 B-70

N/A
123835

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 5.70 mm

N/A 70

N/A 94.00 mm

N/A Seal Guides

94 X 5.7 B-90

N/A
123836

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 5.70 mm

N/A 90

N/A 94.00 mm

N/A Seal Guides

94.1 X 5.7 B-70

N/A
123837

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 5.70 mm

N/A 70

N/A 94.10 mm

N/A Seal Guides

94.1 X 5.7 B-90

N/A
123838

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 5.70 mm

N/A 90

N/A 94.10 mm

N/A Seal Guides

94.2 X 5.7 B-70

N/A
123839

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 5.70 mm

N/A 70

N/A 94.20 mm

N/A Seal Guides

94.2 X 5.7 B-90

N/A
123840

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 5.70 mm

N/A 90

N/A 94.20 mm

N/A Seal Guides

94.3 X 5.7 B-70

N/A
123841

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 5.70 mm

N/A 70

N/A 94.30 mm

N/A Seal Guides

94.3 X 5.7 B-90

N/A
123842

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 5.70 mm

N/A 90

N/A 94.30 mm

N/A Seal Guides

94.6 X 5.7 B-70

N/A
123843

N/A Metric Standard O-Ring

N/A Buna

N/A P95

N/A 5.70 mm

N/A 70

N/A 94.60 mm

N/A Seal Guides

94.6 X 5.7 B-90

N/A
123844

N/A Metric Standard O-Ring

N/A Buna

N/A P95

N/A 5.70 mm

N/A 90

N/A 94.60 mm

N/A Seal Guides

97.2 X 5.7 B-70

N/A
123845

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 5.70 mm

N/A 70

N/A 97.20 mm

N/A Seal Guides

97.2 X 5.7 B-90

N/A
123846

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 5.70 mm

N/A 90

N/A 97.20 mm

N/A Seal Guides

99 X 5.7 B-70

N/A
123847

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 5.70 mm

N/A 70

N/A 99.00 mm

N/A Seal Guides

99 X 5.7 B-90

N/A
123848

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 5.70 mm

N/A 90

N/A 99.00 mm

N/A Seal Guides

99.1 X 5.7 B-70

N/A
123849

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 5.70 mm

N/A 70

N/A 99.10 mm

N/A Seal Guides

99.1 X 5.7 B-90

N/A
123850

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 5.70 mm

N/A 90

N/A 99.10 mm

N/A Seal Guides

99.2 X 5.7 B-70

N/A
123851

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 5.70 mm

N/A 70

N/A 99.20 mm

N/A Seal Guides

99.2 X 5.7 B-90

N/A
123852

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 5.70 mm

N/A 90

N/A 99.20 mm

N/A Seal Guides