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
31.5 X 3 B-90	N/A 119266	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 90	N/A 31.50 mm
32 X 3 B-70	N/A 119267	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 70	N/A 32.00 mm
32 X 3 B-90	N/A 119268	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 90	N/A 32.00 mm
32.2 X 3 B-70	N/A 119269	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 70	N/A 32.20 mm
32.2 X 3 B-90	N/A 119270	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 90	N/A 32.20 mm
32.5 X 3 B-70	N/A 119271	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 70	N/A 32.50 mm
32.5 X 3 B-90	N/A 119272	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 90	N/A 32.50 mm
33 X 3 B-70	N/A 119273	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 70	N/A 33.00 mm
33 X 3 B-90	N/A 119274	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 90	N/A 33.00 mm
33.5 X 3 B-70	N/A 119275	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 70	N/A 33.50 mm
33.5 X 3 B-90	N/A 119276	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 90	N/A 33.50 mm
34 X 3 B-70	N/A 119277	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 70	N/A 34.00 mm
34 X 3 B-90	N/A 119278	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 90	N/A 34.00 mm
34.2 X 3 B-70	N/A 119279	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 70	N/A 34.20 mm
34.2 X 3 B-90	N/A 119280	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 90	N/A 34.20 mm
34.5 X 3 B-70	N/A 119281	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 70	N/A 34.50 mm
34.5 X 3 B-90	N/A 119282	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 90	N/A 34.50 mm
35 X 3 B-70	N/A 119283	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 70	N/A 35.00 mm
35 X 3 B-90	N/A 119284	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 90	N/A 35.00 mm
35.5 X 3 B-70	N/A 119285	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 70	N/A 35.50 mm
35.5 X 3 B-90	N/A 119286	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 90	N/A 35.50 mm
36 X 3 B-70	N/A 119287	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 70	N/A 36.00 mm
36 X 3 B-90	N/A 119288	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 90	N/A 36.00 mm
36.2 X 3 B-70	N/A 119289	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 70	N/A 36.20 mm
36.2 X 3 B-90	N/A 119290	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 3.00 mm	N/A 90	N/A 36.20 mm

N/A
119266

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 90

N/A 31.50 mm

32 X 3 B-70

N/A
119267

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 70

N/A 32.00 mm

32 X 3 B-90

N/A
119268

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 90

N/A 32.00 mm

32.2 X 3 B-70

N/A
119269

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 70

N/A 32.20 mm

32.2 X 3 B-90

N/A
119270

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 90

N/A 32.20 mm

32.5 X 3 B-70

N/A
119271

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 70

N/A 32.50 mm

32.5 X 3 B-90

N/A
119272

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 90

N/A 32.50 mm

33 X 3 B-70

N/A
119273

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 70

N/A 33.00 mm

33 X 3 B-90

N/A
119274

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 90

N/A 33.00 mm

33.5 X 3 B-70

N/A
119275

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 70

N/A 33.50 mm

33.5 X 3 B-90

N/A
119276

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 90

N/A 33.50 mm

34 X 3 B-70

N/A
119277

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 70

N/A 34.00 mm

34 X 3 B-90

N/A
119278

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 90

N/A 34.00 mm

34.2 X 3 B-70

N/A
119279

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 70

N/A 34.20 mm

34.2 X 3 B-90

N/A
119280

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 90

N/A 34.20 mm

34.5 X 3 B-70

N/A
119281

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 70

N/A 34.50 mm

34.5 X 3 B-90

N/A
119282

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 90

N/A 34.50 mm

35 X 3 B-70

N/A
119283

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 70

N/A 35.00 mm

35 X 3 B-90

N/A
119284

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 90

N/A 35.00 mm

35.5 X 3 B-70

N/A
119285

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 70

N/A 35.50 mm

35.5 X 3 B-90

N/A
119286

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 90

N/A 35.50 mm

36 X 3 B-70

N/A
119287

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 70

N/A 36.00 mm

36 X 3 B-90

N/A
119288

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 90

N/A 36.00 mm

36.2 X 3 B-70

N/A
119289

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 70

N/A 36.20 mm

36.2 X 3 B-90

N/A
119290

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 3.00 mm

N/A 90

N/A 36.20 mm