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 1.5 B-90	N/A 117396	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 31.50 mm
32 X 1.5 B-70	N/A 117397	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 70	N/A 32.00 mm
32 X 1.5 B-90	N/A 117398	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 32.00 mm
32.5 X 1.5 B-70	N/A 117399	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 70	N/A 32.50 mm
32.5 X 1.5 B-90	N/A 117400	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 32.50 mm
33 X 1.5 B-70	N/A 117401	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 70	N/A 33.00 mm
33 X 1.5 B-90	N/A 117402	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 33.00 mm
33.5 X 1.5 B-70	N/A 117403	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 70	N/A 33.50 mm
33.5 X 1.5 B-90	N/A 117404	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 33.50 mm
34 X 1.5 B-70	N/A 117405	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 70	N/A 34.00 mm
34 X 1.5 B-90	N/A 117406	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 34.00 mm
34.5 X 1.5 B-70	N/A 117407	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 70	N/A 34.50 mm
34.5 X 1.5 B-90	N/A 117408	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 34.50 mm
35 X 1.5 B-70	N/A 117409	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 70	N/A 35.00 mm
35 X 1.5 B-90	N/A 117410	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 35.00 mm
35.5 X 1.5 B-70	N/A 117411	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 70	N/A 35.50 mm
35.5 X 1.5 B-90	N/A 117412	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 35.50 mm
36 X 1.5 B-70	N/A 117413	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 70	N/A 36.00 mm
36 X 1.5 B-90	N/A 117414	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 36.00 mm
36.5 X 1.5 B-70	N/A 117415	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 70	N/A 36.50 mm
36.5 X 1.5 B-90	N/A 117416	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 36.50 mm
37 X 1.5 B-70	N/A 117417	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 70	N/A 37.00 mm
37 X 1.5 B-90	N/A 117418	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 37.00 mm
37.5 X 1.5 B-70	N/A 117419	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 70	N/A 37.50 mm
37.5 X 1.5 B-90	N/A 117420	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 1.50 mm	N/A 90	N/A 37.50 mm

N/A
117396

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 31.50 mm

32 X 1.5 B-70

N/A
117397

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 70

N/A 32.00 mm

32 X 1.5 B-90

N/A
117398

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 32.00 mm

32.5 X 1.5 B-70

N/A
117399

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 70

N/A 32.50 mm

32.5 X 1.5 B-90

N/A
117400

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 32.50 mm

33 X 1.5 B-70

N/A
117401

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 70

N/A 33.00 mm

33 X 1.5 B-90

N/A
117402

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 33.00 mm

33.5 X 1.5 B-70

N/A
117403

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 70

N/A 33.50 mm

33.5 X 1.5 B-90

N/A
117404

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 33.50 mm

34 X 1.5 B-70

N/A
117405

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 70

N/A 34.00 mm

34 X 1.5 B-90

N/A
117406

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 34.00 mm

34.5 X 1.5 B-70

N/A
117407

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 70

N/A 34.50 mm

34.5 X 1.5 B-90

N/A
117408

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 34.50 mm

35 X 1.5 B-70

N/A
117409

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 70

N/A 35.00 mm

35 X 1.5 B-90

N/A
117410

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 35.00 mm

35.5 X 1.5 B-70

N/A
117411

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 70

N/A 35.50 mm

35.5 X 1.5 B-90

N/A
117412

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 35.50 mm

36 X 1.5 B-70

N/A
117413

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 70

N/A 36.00 mm

36 X 1.5 B-90

N/A
117414

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 36.00 mm

36.5 X 1.5 B-70

N/A
117415

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 70

N/A 36.50 mm

36.5 X 1.5 B-90

N/A
117416

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 36.50 mm

37 X 1.5 B-70

N/A
117417

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 70

N/A 37.00 mm

37 X 1.5 B-90

N/A
117418

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 37.00 mm

37.5 X 1.5 B-70

N/A
117419

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 70

N/A 37.50 mm

37.5 X 1.5 B-90

N/A
117420

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 1.50 mm

N/A 90

N/A 37.50 mm