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.
Cross Section Width (in)
Cross Section Width (mm)
Durometer
Inside Diameter (in)
Inside Diameter (mm)
Item # |
IntegrationID |
Type |
Material |
Cross Section Width |
Durometer |
Inside Diameter |
CSW Tolerance |
BS Number |
---|---|---|---|---|---|---|---|---|
BS842 B-70 |
IntegrationID
N/A 184243 |
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 2.687 in68.25 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -842 |
BS842 B-90 |
IntegrationID
N/A 184244 |
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 2.687 in68.25 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -842 |
BS841 B-70 |
IntegrationID
N/A 184245 |
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 2.625 in66.68 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -841 |
BS841 B-90 |
IntegrationID
N/A 184246 |
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 2.625 in66.68 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -841 |
BS840 B-70 |
IntegrationID
N/A 184247 |
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 2.563 in65.1 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -840 |
BS840 B-90 |
IntegrationID
N/A 184248 |
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 2.563 in65.1 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -840 |
BS839 B-70 |
IntegrationID
N/A 184249 |
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 2.500 in63.50 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -839 |
BS839 B-90 |
IntegrationID
N/A 184250 |
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 2.500 in63.50 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -839 |
BS838 B-70 |
IntegrationID
N/A 184251 |
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 2.437 in61.90 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -838 |
BS838 B-90 |
IntegrationID
N/A 184252 |
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 2.437 in61.90 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -838 |
BS837 B-70 |
IntegrationID
N/A 184253 |
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 2.375 in60.33 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -837 |
BS837 B-90 |
IntegrationID
N/A 184254 |
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 2.375 in60.33 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -837 |
BS836 B-70 |
IntegrationID
N/A 184255 |
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 2.313 in58.74 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -836 |
BS836 B-90 |
IntegrationID
N/A 184256 |
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 2.313 in58.74 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -836 |
BS835 B-70 |
IntegrationID
N/A 184257 |
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 2.25 in57.15 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -835 |
BS835 B-90 |
IntegrationID
N/A 184258 |
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 2.25 in57.15 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -835 |
BS834 B-70 |
IntegrationID
N/A 184259 |
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 2.187 in55.55 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -834 |
BS834 B-90 |
IntegrationID
N/A 184260 |
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 2.187 in55.55 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -834 |
BS833 B-70 |
IntegrationID
N/A 184261 |
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 2.125 in53.98 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -833 |
BS833 B-90 |
IntegrationID
N/A 184262 |
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 2.125 in53.98 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -833 |
BS832 B-70 |
IntegrationID
N/A 184263 |
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 2.063 in52.39 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -832 |
BS832 B-90 |
IntegrationID
N/A 184264 |
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 2.063 in52.39 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -832 |
BS831 B-70 |
IntegrationID
N/A 184265 |
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 2.000 in50.80 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -831 |
BS831 B-90 |
IntegrationID
N/A 184266 |
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 2.000 in50.80 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -831 |
BS830 B-70 |
IntegrationID
N/A 184267 |
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 1.937 in49.20 mm | CSW Tolerance N/A 0.004 in0.10 mm | BS Number N/A -830 |