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
101 X 6 B-90	N/A 124228	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 101.00 mm	N/A Seal Guides
103x6.00B70	N/A 124229	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 103.00 mm	N/A Seal Guides
103 X 6 B-90	N/A 124230	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 103.00 mm	N/A Seal Guides
104x6.00B70	N/A 124231	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 104.00 mm	N/A Seal Guides
104 X 6 B-90	N/A 124232	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 104.00 mm	N/A Seal Guides
104.5 X 6 B-70	N/A 124233	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 104.50 mm	N/A Seal Guides
104.5 X 6 B-90	N/A 124234	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 104.50 mm	N/A Seal Guides
105x6.00B70	N/A 124235	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 105.00 mm	N/A Seal Guides
105 X 6 B-90	N/A 124236	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 105.00 mm	N/A Seal Guides
106x6.00B70	N/A 124237	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 106.00 mm	N/A Seal Guides
106 X 6 B-90	N/A 124238	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 106.00 mm	N/A Seal Guides
108x6.00B70	N/A 124239	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 108.00 mm	N/A Seal Guides
108 X 6 B-90	N/A 124240	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 108.00 mm	N/A Seal Guides
110x6.00B70	N/A 124241	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 110.00 mm	N/A Seal Guides
110 X 6 B-90	N/A 124242	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 110.00 mm	N/A Seal Guides
111 X 6 B-70	N/A 124243	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 111.00 mm	N/A Seal Guides
111 X 6 B-90	N/A 124244	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 111.00 mm	N/A Seal Guides
112x6.00B70	N/A 124245	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 112.00 mm	N/A Seal Guides
112 X 6 B-90	N/A 124246	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 112.00 mm	N/A Seal Guides
114x6.00B70	N/A 124247	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 114.00 mm	N/A Seal Guides
114 X 6 B-90	N/A 124248	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 114.00 mm	N/A Seal Guides
115x6.00B70	N/A 124249	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 115.00 mm	N/A Seal Guides
115 X 6 B-90	N/A 124250	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 115.00 mm	N/A Seal Guides
118x6.00B70	N/A 124251	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 70	N/A 118.00 mm	N/A Seal Guides
118 X 6 B-90	N/A 124252	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 6.00 mm	N/A 90	N/A 118.00 mm	N/A Seal Guides

N/A
124228

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 101.00 mm

N/A Seal Guides

103x6.00B70

N/A
124229

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 103.00 mm

N/A Seal Guides

103 X 6 B-90

N/A
124230

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 103.00 mm

N/A Seal Guides

104x6.00B70

N/A
124231

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 104.00 mm

N/A Seal Guides

104 X 6 B-90

N/A
124232

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 104.00 mm

N/A Seal Guides

104.5 X 6 B-70

N/A
124233

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 104.50 mm

N/A Seal Guides

104.5 X 6 B-90

N/A
124234

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 104.50 mm

N/A Seal Guides

105x6.00B70

N/A
124235

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 105.00 mm

N/A Seal Guides

105 X 6 B-90

N/A
124236

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 105.00 mm

N/A Seal Guides

106x6.00B70

N/A
124237

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 106.00 mm

N/A Seal Guides

106 X 6 B-90

N/A
124238

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 106.00 mm

N/A Seal Guides

108x6.00B70

N/A
124239

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 108.00 mm

N/A Seal Guides

108 X 6 B-90

N/A
124240

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 108.00 mm

N/A Seal Guides

110x6.00B70

N/A
124241

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 110.00 mm

N/A Seal Guides

110 X 6 B-90

N/A
124242

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 110.00 mm

N/A Seal Guides

111 X 6 B-70

N/A
124243

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 111.00 mm

N/A Seal Guides

111 X 6 B-90

N/A
124244

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 111.00 mm

N/A Seal Guides

112x6.00B70

N/A
124245

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 112.00 mm

N/A Seal Guides

112 X 6 B-90

N/A
124246

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 112.00 mm

N/A Seal Guides

114x6.00B70

N/A
124247

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 114.00 mm

N/A Seal Guides

114 X 6 B-90

N/A
124248

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 114.00 mm

N/A Seal Guides

115x6.00B70

N/A
124249

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 115.00 mm

N/A Seal Guides

115 X 6 B-90

N/A
124250

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 115.00 mm

N/A Seal Guides

118x6.00B70

N/A
124251

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 70

N/A 118.00 mm

N/A Seal Guides

118 X 6 B-90

N/A
124252

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 6.00 mm

N/A 90

N/A 118.00 mm

N/A Seal Guides