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
22.5 X 2 B-90	N/A 118000	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 90	N/A 22.50 mm
23x2.00B70	N/A 118001	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 70	N/A 23.00 mm
23 X 2 B-90	N/A 118002	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 90	N/A 23.00 mm
23.5x2.00B70	N/A 118003	N/A Metric Standard O-Ring	N/A Buna	N/A S24	N/A 2.00 mm	N/A 70	N/A 23.50 mm
23.5 X 2 B-90	N/A 118004	N/A Metric Standard O-Ring	N/A Buna	N/A S24	N/A 2.00 mm	N/A 90	N/A 23.50 mm
24x2.00B70	N/A 118005	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 70	N/A 24.00 mm
24 X 2 B-90	N/A 118006	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 90	N/A 24.00 mm
24.5x2.00B70	N/A 118007	N/A Metric Standard O-Ring	N/A Buna	N/A S25	N/A 2.00 mm	N/A 70	N/A 24.50 mm
24.5 X 2 B-90	N/A 118008	N/A Metric Standard O-Ring	N/A Buna	N/A S25	N/A 2.00 mm	N/A 90	N/A 24.50 mm
25x2.00B70	N/A 118009	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 70	N/A 25.00 mm
25 X 2 B-90	N/A 118010	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 90	N/A 25.00 mm
25.5x2.00B70	N/A 118011	N/A Metric Standard O-Ring	N/A Buna	N/A S26	N/A 2.00 mm	N/A 70	N/A 25.50 mm
25.5 X 2 B-90	N/A 118012	N/A Metric Standard O-Ring	N/A Buna	N/A S26	N/A 2.00 mm	N/A 90	N/A 25.50 mm
26x2.00B70	N/A 118013	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 70	N/A 26.00 mm
26 X 2 B-90	N/A 118014	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 90	N/A 26.00 mm
26.5x2.00B70	N/A 118015	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 70	N/A 26.50 mm
26.5 X 2 B-90	N/A 118016	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 90	N/A 26.50 mm
27x2.00B70	N/A 118017	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 70	N/A 27.00 mm
27 X 2 B-90	N/A 118018	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 90	N/A 27.00 mm
27.5x2.00B70	N/A 118019	N/A Metric Standard O-Ring	N/A Buna	N/A S28	N/A 2.00 mm	N/A 70	N/A 27.50 mm
27.5 X 2 B-90	N/A 118020	N/A Metric Standard O-Ring	N/A Buna	N/A S28	N/A 2.00 mm	N/A 90	N/A 27.50 mm
28x2.00B70	N/A 118021	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 70	N/A 28.00 mm
28 X 2 B-90	N/A 118022	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 2.00 mm	N/A 90	N/A 28.00 mm
28.5x2.00B70	N/A 118023	N/A Metric Standard O-Ring	N/A Buna	N/A S29	N/A 2.00 mm	N/A 70	N/A 28.50 mm
28.5 X 2 B-90	N/A 118024	N/A Metric Standard O-Ring	N/A Buna	N/A S29	N/A 2.00 mm	N/A 90	N/A 28.50 mm

N/A
118000

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 90

N/A 22.50 mm

23x2.00B70

N/A
118001

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 70

N/A 23.00 mm

23 X 2 B-90

N/A
118002

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 90

N/A 23.00 mm

23.5x2.00B70

N/A
118003

N/A Metric Standard O-Ring

N/A Buna

N/A S24

N/A 2.00 mm

N/A 70

N/A 23.50 mm

23.5 X 2 B-90

N/A
118004

N/A Metric Standard O-Ring

N/A Buna

N/A S24

N/A 2.00 mm

N/A 90

N/A 23.50 mm

24x2.00B70

N/A
118005

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 70

N/A 24.00 mm

24 X 2 B-90

N/A
118006

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 90

N/A 24.00 mm

24.5x2.00B70

N/A
118007

N/A Metric Standard O-Ring

N/A Buna

N/A S25

N/A 2.00 mm

N/A 70

N/A 24.50 mm

24.5 X 2 B-90

N/A
118008

N/A Metric Standard O-Ring

N/A Buna

N/A S25

N/A 2.00 mm

N/A 90

N/A 24.50 mm

25x2.00B70

N/A
118009

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 70

N/A 25.00 mm

25 X 2 B-90

N/A
118010

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 90

N/A 25.00 mm

25.5x2.00B70

N/A
118011

N/A Metric Standard O-Ring

N/A Buna

N/A S26

N/A 2.00 mm

N/A 70

N/A 25.50 mm

25.5 X 2 B-90

N/A
118012

N/A Metric Standard O-Ring

N/A Buna

N/A S26

N/A 2.00 mm

N/A 90

N/A 25.50 mm

26x2.00B70

N/A
118013

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 70

N/A 26.00 mm

26 X 2 B-90

N/A
118014

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 90

N/A 26.00 mm

26.5x2.00B70

N/A
118015

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 70

N/A 26.50 mm

26.5 X 2 B-90

N/A
118016

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 90

N/A 26.50 mm

27x2.00B70

N/A
118017

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 70

N/A 27.00 mm

27 X 2 B-90

N/A
118018

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 90

N/A 27.00 mm

27.5x2.00B70

N/A
118019

N/A Metric Standard O-Ring

N/A Buna

N/A S28

N/A 2.00 mm

N/A 70

N/A 27.50 mm

27.5 X 2 B-90

N/A
118020

N/A Metric Standard O-Ring

N/A Buna

N/A S28

N/A 2.00 mm

N/A 90

N/A 27.50 mm

28x2.00B70

N/A
118021

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 70

N/A 28.00 mm

28 X 2 B-90

N/A
118022

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 2.00 mm

N/A 90

N/A 28.00 mm

28.5x2.00B70

N/A
118023

N/A Metric Standard O-Ring

N/A Buna

N/A S29

N/A 2.00 mm

N/A 70

N/A 28.50 mm

28.5 X 2 B-90

N/A
118024

N/A Metric Standard O-Ring

N/A Buna

N/A S29

N/A 2.00 mm

N/A 90

N/A 28.50 mm