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 |
---|---|---|---|---|---|---|---|---|
BS394 B-90 |
IntegrationID
N/A 184518 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 90 | Inside Diameter N/A 24.940 in633.48 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -394 |
BS393 B-70 |
IntegrationID
N/A 184519 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 70 | Inside Diameter N/A 23.940 in608.08 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -393 |
BS393 B-90 |
IntegrationID
N/A 184520 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 90 | Inside Diameter N/A 23.940 in608.08 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -393 |
BS392 B-70 |
IntegrationID
N/A 184521 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 70 | Inside Diameter N/A 22.940 in582.68 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -392 |
BS392 B-90 |
IntegrationID
N/A 184522 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 90 | Inside Diameter N/A 22.940 in582.68 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -392 |
BS391 B-70 |
IntegrationID
N/A 184523 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 70 | Inside Diameter N/A 21.955 in557.66 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -391 |
BS391 B-90 |
IntegrationID
N/A 184524 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 90 | Inside Diameter N/A 21.955 in557.66 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -391 |
BS390 B-70 |
IntegrationID
N/A 184525 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 70 | Inside Diameter N/A 20.955 in532.26 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -390 |
BS390 B-90 |
IntegrationID
N/A 184526 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 90 | Inside Diameter N/A 20.955 in532.26 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -390 |
BS389 B-70 |
IntegrationID
N/A 184527 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 70 | Inside Diameter N/A 19.955 in506.86 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -389 |
BS389 B-90 |
IntegrationID
N/A 184528 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 90 | Inside Diameter N/A 19.955 in506.86 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -389 |
BS388 B-70 |
IntegrationID
N/A 184529 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 70 | Inside Diameter N/A 18.955 in481.46 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -388 |
BS388 B-90 |
IntegrationID
N/A 184530 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 90 | Inside Diameter N/A 18.955 in481.46 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -388 |
BS387 B-70 |
IntegrationID
N/A 184531 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 70 | Inside Diameter N/A 17.955 in456.06 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -387 |
BS387 B-90 |
IntegrationID
N/A 184532 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 90 | Inside Diameter N/A 17.955 in456.06 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -387 |
BS386 B-70 |
IntegrationID
N/A 184533 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 70 | Inside Diameter N/A 16.955 in430.66 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -386 |
BS386 B-90 |
IntegrationID
N/A 184534 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 90 | Inside Diameter N/A 16.955 in430.66 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -386 |
BS385 B-70 |
IntegrationID
N/A 184535 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 70 | Inside Diameter N/A 15.955 in405.26 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -385 |
BS385 B-90 |
IntegrationID
N/A 184536 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 90 | Inside Diameter N/A 15.955 in405.26 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -385 |
BS384 B-70 |
IntegrationID
N/A 184537 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 70 | Inside Diameter N/A 14.975 in380.37 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -384 |
BS384 B-90 |
IntegrationID
N/A 184538 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 90 | Inside Diameter N/A 14.975 in380.37 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -384 |
BS383 B-70 |
IntegrationID
N/A 184539 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 70 | Inside Diameter N/A 13.975 in354.97 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -383 |
BS383 B-90 |
IntegrationID
N/A 184540 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 90 | Inside Diameter N/A 13.975 in354.97 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -383 |
BS382 B-70 |
IntegrationID
N/A 184541 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 70 | Inside Diameter N/A 12.975 in329.57 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -382 |
BS382 B-90 |
IntegrationID
N/A 184542 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.210 in5.33 mm | Durometer N/A 90 | Inside Diameter N/A 12.975 in329.57 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -382 |