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 |
---|---|---|---|---|---|---|---|---|
BS806 B-70 |
IntegrationID
N/A 184293 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.070 in1.78 mm | Durometer N/A 70 | Inside Diameter N/A 0.437 in11.10 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -806 |
BS806 B-90 |
IntegrationID
N/A 184294 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.070 in1.78 mm | Durometer N/A 90 | Inside Diameter N/A 0.437 in11.10 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -806 |
BS804 B-70 |
IntegrationID
N/A 184295 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.070 in1.78 mm | Durometer N/A 70 | Inside Diameter N/A 0.313 in7.94 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -804 |
BS804 B-90 |
IntegrationID
N/A 184296 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.070 in1.78 mm | Durometer N/A 90 | Inside Diameter N/A 0.313 in7.94 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -804 |
BS803 B-70 |
IntegrationID
N/A 184297 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.070 in1.78 mm | Durometer N/A 70 | Inside Diameter N/A 0.25 in6.35 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -803 |
BS803 B-90 |
IntegrationID
N/A 184298 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.070 in1.78 mm | Durometer N/A 90 | Inside Diameter N/A 0.25 in6.35 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -803 |
BS802 B-70 |
IntegrationID
N/A 184299 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.070 in1.78 mm | Durometer N/A 70 | Inside Diameter N/A 0.187 in4.75 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -802 |
BS802 B-90 |
IntegrationID
N/A 184300 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.070 in1.78 mm | Durometer N/A 90 | Inside Diameter N/A 0.187 in4.75 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -802 |
BS801 B-70 |
IntegrationID
N/A 184301 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.070 in1.78 mm | Durometer N/A 70 | Inside Diameter N/A 0.125 in3.18 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -801 |
BS801 B-90 |
IntegrationID
N/A 184302 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.070 in1.78 mm | Durometer N/A 90 | Inside Diameter N/A 0.125 in3.18 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -801 |
BS650 B-70 |
IntegrationID
N/A 184303 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 13.225 in335.92 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -650 |
BS650 B-90 |
IntegrationID
N/A 184304 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 90 | Inside Diameter N/A 13.225 in335.92 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -650 |
BS649 B-70 |
IntegrationID
N/A 184305 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 12.725 in323.22 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -649 |
BS649 B-90 |
IntegrationID
N/A 184306 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 90 | Inside Diameter N/A 12.725 in323.22 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -649 |
BS648 B-70 |
IntegrationID
N/A 184307 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 70 | Inside Diameter N/A 12.225 in310.52 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -648 |
BS648 B-90 |
IntegrationID
N/A 184308 |
Type N/A BS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.275 in6.99 mm | Durometer N/A 90 | Inside Diameter N/A 12.225 in310.52 mm | CSW Tolerance N/A 0.006 in0.15 mm | BS Number N/A -648 |
BS647 B-70 |
IntegrationID
N/A 184309 |
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 6.85 in173.99 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -647 |
BS647 B-90 |
IntegrationID
N/A 184310 |
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 6.85 in173.99 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -647 |
BS646 B-70 |
IntegrationID
N/A 184311 |
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 6.600 in167.64 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -646 |
BS646 B-90 |
IntegrationID
N/A 184312 |
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 6.600 in167.64 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -646 |
BS645 B-70 |
IntegrationID
N/A 184313 |
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 6.35 in161.29 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -645 |
BS645 B-90 |
IntegrationID
N/A 184314 |
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 6.35 in161.29 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -645 |
BS644 B-70 |
IntegrationID
N/A 184315 |
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 6.100 in154.94 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -644 |
BS644 B-90 |
IntegrationID
N/A 184316 |
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 6.100 in154.94 mm | CSW Tolerance N/A 0.005 in0.13 mm | BS Number N/A -644 |
BS643 B-70 |
IntegrationID
N/A 184317 |
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 3.299 in83.79 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -643 |