• 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
118937 		N/A Metric Standard O-Ring N/A Buna N/A 130 N/A 2.62 mm N/A 70 N/A 40.94 mm
N/A
118938 		N/A Metric Standard O-Ring N/A Buna N/A 130 N/A 2.62 mm N/A 90 N/A 40.94 mm
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118939 		N/A Metric Standard O-Ring N/A Buna N/A 131 N/A 2.62 mm N/A 70 N/A 42.52 mm
N/A
118940 		N/A Metric Standard O-Ring N/A Buna N/A 131 N/A 2.62 mm N/A 90 N/A 42.52 mm
N/A
118941 		N/A Metric Standard O-Ring N/A Buna N/A 132 N/A 2.62 mm N/A 70 N/A 44.12 mm
N/A
118942 		N/A Metric Standard O-Ring N/A Buna N/A 132 N/A 2.62 mm N/A 90 N/A 44.12 mm
N/A
118943 		N/A Metric Standard O-Ring N/A Buna N/A 133 N/A 2.62 mm N/A 70 N/A 45.69 mm
N/A
118944 		N/A Metric Standard O-Ring N/A Buna N/A 133 N/A 2.62 mm N/A 90 N/A 45.69 mm
N/A
118945 		N/A Metric Standard O-Ring N/A Buna N/A 134 N/A 2.62 mm N/A 70 N/A 47.29 mm
N/A
118946 		N/A Metric Standard O-Ring N/A Buna N/A 134 N/A 2.62 mm N/A 90 N/A 47.29 mm
N/A
118947 		N/A Metric Standard O-Ring N/A Buna N/A 135 N/A 2.62 mm N/A 70 N/A 48.90 mm
N/A
118948 		N/A Metric Standard O-Ring N/A Buna N/A 135 N/A 2.62 mm N/A 90 N/A 48.90 mm
N/A
118949 		N/A Metric Standard O-Ring N/A Buna N/A 136 N/A 2.62 mm N/A 70 N/A 50.47 mm
N/A
118950 		N/A Metric Standard O-Ring N/A Buna N/A 136 N/A 2.62 mm N/A 90 N/A 50.47 mm
N/A
118951 		N/A Metric Standard O-Ring N/A Buna N/A 137 N/A 2.62 mm N/A 70 N/A 52.07 mm
N/A
118952 		N/A Metric Standard O-Ring N/A Buna N/A 137 N/A 2.62 mm N/A 90 N/A 52.07 mm
N/A
118953 		N/A Metric Standard O-Ring N/A Buna N/A 138 N/A 2.62 mm N/A 70 N/A 53.64 mm
N/A
118954 		N/A Metric Standard O-Ring N/A Buna N/A 138 N/A 2.62 mm N/A 90 N/A 53.64 mm
N/A
118955 		N/A Metric Standard O-Ring N/A Buna N/A 139 N/A 2.62 mm N/A 70 N/A 55.25 mm
N/A
118956 		N/A Metric Standard O-Ring N/A Buna N/A 139 N/A 2.62 mm N/A 90 N/A 55.25 mm
N/A
118957 		N/A Metric Standard O-Ring N/A Buna N/A 140 N/A 2.62 mm N/A 70 N/A 56.82 mm
N/A
118958 		N/A Metric Standard O-Ring N/A Buna N/A 140 N/A 2.62 mm N/A 90 N/A 56.82 mm
N/A
118959 		N/A Metric Standard O-Ring N/A Buna N/A 141 N/A 2.62 mm N/A 70 N/A 58.42 mm
N/A
118960 		N/A Metric Standard O-Ring N/A Buna N/A 141 N/A 2.62 mm N/A 90 N/A 58.42 mm
N/A
118961 		N/A Metric Standard O-Ring N/A Buna N/A 142 N/A 2.62 mm N/A 70 N/A 59.99 mm
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