OneMonroe BUNA O-Rings are engineered to provide dependable sealing solutions for a wide range of industrial applications. Crafted from high-quality BUNA-N material, also known as Nitrile, these O-rings deliver exceptional resistance to oils, fuels, and various chemicals, making them a top choice for machinery, automotive, and hydraulic systems. Their robust design ensures a reliable seal in both low and high-pressure environments, protecting against leaks, contamination, and wear. Each O-ring is manufactured to precise industry standards, offering a secure fit and lasting performance that businesses can depend on in even the most demanding conditions.
Our selection of BUNA O-rings includes an extensive variety of sizes and specifications, designed to suit a wide array of sealing needs. From small to large diameters, OneMonroe provides O-rings that can be used across multiple industries, including aerospace, manufacturing, and construction. These O-rings are versatile, supporting applications that require excellent abrasion resistance and the ability to perform reliably in temperatures ranging from -40°F to 212°F. OneMonroe BUNA O-Rings are known for their compatibility with petroleum-based fluids and are often the go-to choice for applications involving oil and gas, where durability and flexibility are essential.
OneMonroe is dedicated to delivering high-quality, cost-effective solutions that meet the unique needs of its customers. Our BUNA O-rings undergo rigorous testing and quality control to ensure each product meets strict performance standards. Whether you’re in need of O-rings for maintenance, repair, or original equipment manufacturing, OneMonroe's BUNA O-rings provide a dependable, long-lasting solution. With a commitment to exceptional customer service, Monroe ensures you have access to the precise sealing products you need to keep your operations running smoothly.
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 Section Width |
Durometer |
Inside Diameter |
CSW Tolerance |
BS Number |
---|---|---|---|---|---|---|---|---|
BS204 B-70 |
IntegrationID
N/A 184843 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 0.359 in9.12 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -204 |
BS204 B-90 |
IntegrationID
N/A 184844 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 90 | Inside Diameter N/A 0.359 in9.12 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -204 |
BS203 B-70 |
IntegrationID
N/A 184845 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 0.296 in7.52 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -203 |
BS203 B-90 |
IntegrationID
N/A 184846 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 90 | Inside Diameter N/A 0.296 in7.52 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -203 |
BS202 B-70 |
IntegrationID
N/A 184847 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 0.234 in5.94 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -202 |
BS202 B-90 |
IntegrationID
N/A 184848 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 90 | Inside Diameter N/A 0.234 in5.94 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -202 |
BS201 B-70 |
IntegrationID
N/A 184849 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 70 | Inside Diameter N/A 0.171 in4.34 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -201 |
BS201 B-90 |
IntegrationID
N/A 184850 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.139 in3.53 mm | Durometer N/A 90 | Inside Diameter N/A 0.171 in4.34 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -201 |
BS178 B-70 |
IntegrationID
N/A 184851 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 9.737 in247.32 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -178 |
BS178 B-90 |
IntegrationID
N/A 184852 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 90 | Inside Diameter N/A 9.737 in247.32 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -178 |
BS177 B-70 |
IntegrationID
N/A 184853 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 9.487 in240.97 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -177 |
BS177 B-90 |
IntegrationID
N/A 184854 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 90 | Inside Diameter N/A 9.487 in240.97 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -177 |
BS176 B-70 |
IntegrationID
N/A 184855 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 9.237 in234.62 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -176 |
BS176 B-90 |
IntegrationID
N/A 184856 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 90 | Inside Diameter N/A 9.237 in234.62 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -176 |
BS175 B-70 |
IntegrationID
N/A 184857 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 8.987 in228.27 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -175 |
BS175 B-90 |
IntegrationID
N/A 184858 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 90 | Inside Diameter N/A 8.987 in228.27 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -175 |
BS174 B-70 |
IntegrationID
N/A 184859 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 8.737 in221.92 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -174 |
BS174 B-90 |
IntegrationID
N/A 184860 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 90 | Inside Diameter N/A 8.737 in221.92 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -174 |
BS173 B-70 |
IntegrationID
N/A 184861 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 8.487 in215.57 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -173 |
BS173 B-90 |
IntegrationID
N/A 184862 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 90 | Inside Diameter N/A 8.487 in215.57 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -173 |
BS172 B-70 |
IntegrationID
N/A 184863 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 8.237 in209.22 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -172 |
BS172 B-90 |
IntegrationID
N/A 184864 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 90 | Inside Diameter N/A 8.237 in209.22 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -172 |
BS171 B-70 |
IntegrationID
N/A 184865 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 7.987 in202.87 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -171 |
BS171 B-90 |
IntegrationID
N/A 184866 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 90 | Inside Diameter N/A 7.987 in202.87 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -171 |
BS170 B-70 |
IntegrationID
N/A 184867 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.103 in2.62 mm | Durometer N/A 70 | Inside Diameter N/A 7.737 in196.52 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -170 |
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