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
116x2.50B70	N/A 118781	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 70	N/A 116.00 mm
116 X 2.5 B-90	N/A 118782	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 90	N/A 116.00 mm
117x2.50B70	N/A 118783	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 70	N/A 117.00 mm
117 X 2.5 B-90	N/A 118784	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 90	N/A 117.00 mm
118x2.50B70	N/A 118785	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 70	N/A 118.00 mm
118 X 2.5 B-90	N/A 118786	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 90	N/A 118.00 mm
119 X 2.5 B-70	N/A 118787	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 70	N/A 119.00 mm
119 X 2.5 B-90	N/A 118788	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 90	N/A 119.00 mm
120x2.50B70	N/A 118789	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 70	N/A 120.00 mm
120 X 2.5 B-90	N/A 118790	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 90	N/A 120.00 mm
121 X 2.5 B-70	N/A 118791	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 70	N/A 121.00 mm
121 X 2.5 B-90	N/A 118792	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 90	N/A 121.00 mm
122x2.50B70	N/A 118793	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 70	N/A 122.00 mm
122 X 2.5 B-90	N/A 118794	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 90	N/A 122.00 mm
123x2.50B70	N/A 118795	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 70	N/A 123.00 mm
123 X 2.5 B-90	N/A 118796	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 90	N/A 123.00 mm
124x2.50B70	N/A 118797	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 70	N/A 124.00 mm
124 X 2.5 B-90	N/A 118798	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 90	N/A 124.00 mm
125x2.50B70	N/A 118799	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 70	N/A 125.00 mm
125 X 2.5 B-90	N/A 118800	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 90	N/A 125.00 mm
126x2.50B70	N/A 118801	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 70	N/A 126.00 mm
126 X 2.5 B-90	N/A 118802	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 90	N/A 126.00 mm
127x2.50B70	N/A 118803	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 70	N/A 127.00 mm
127 X 2.5 B-90	N/A 118804	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 90	N/A 127.00 mm
128x2.50B70	N/A 118805	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.50 mm	N/A 70	N/A 128.00 mm

N/A
118781

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 70

N/A 116.00 mm

116 X 2.5 B-90

N/A
118782

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 90

N/A 116.00 mm

117x2.50B70

N/A
118783

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 70

N/A 117.00 mm

117 X 2.5 B-90

N/A
118784

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 90

N/A 117.00 mm

118x2.50B70

N/A
118785

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 70

N/A 118.00 mm

118 X 2.5 B-90

N/A
118786

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 90

N/A 118.00 mm

119 X 2.5 B-70

N/A
118787

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 70

N/A 119.00 mm

119 X 2.5 B-90

N/A
118788

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 90

N/A 119.00 mm

120x2.50B70

N/A
118789

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 70

N/A 120.00 mm

120 X 2.5 B-90

N/A
118790

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 90

N/A 120.00 mm

121 X 2.5 B-70

N/A
118791

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 70

N/A 121.00 mm

121 X 2.5 B-90

N/A
118792

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 90

N/A 121.00 mm

122x2.50B70

N/A
118793

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 70

N/A 122.00 mm

122 X 2.5 B-90

N/A
118794

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 90

N/A 122.00 mm

123x2.50B70

N/A
118795

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 70

N/A 123.00 mm

123 X 2.5 B-90

N/A
118796

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 90

N/A 123.00 mm

124x2.50B70

N/A
118797

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 70

N/A 124.00 mm

124 X 2.5 B-90

N/A
118798

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 90

N/A 124.00 mm

125x2.50B70

N/A
118799

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 70

N/A 125.00 mm

125 X 2.5 B-90

N/A
118800

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 90

N/A 125.00 mm

126x2.50B70

N/A
118801

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 70

N/A 126.00 mm

126 X 2.5 B-90

N/A
118802

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 90

N/A 126.00 mm

127x2.50B70

N/A
118803

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 70

N/A 127.00 mm

127 X 2.5 B-90

N/A
118804

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 90

N/A 127.00 mm

128x2.50B70

N/A
118805

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.50 mm

N/A 70

N/A 128.00 mm