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 |
---|---|---|---|---|---|---|---|---|
BS145 B-90 |
IntegrationID
N/A 184918 |
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 2.550 in64.77 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -145 |
BS144 B-70 |
IntegrationID
N/A 184919 |
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 2.487 in63.17 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -144 |
BS144 B-90 |
IntegrationID
N/A 184920 |
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 2.487 in63.17 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -144 |
BS143 B-70 |
IntegrationID
N/A 184921 |
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 2.425 in61.60 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -143 |
BS143 B-90 |
IntegrationID
N/A 184922 |
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 2.425 in61.60 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -143 |
BS142 B-70 |
IntegrationID
N/A 184923 |
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 2.362 in59.99 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -142 |
BS142 B-90 |
IntegrationID
N/A 184924 |
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 2.362 in59.99 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -142 |
BS141 B-70 |
IntegrationID
N/A 184925 |
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 2.300 in58.42 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -141 |
BS141 B-90 |
IntegrationID
N/A 184926 |
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 2.300 in58.42 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -141 |
BS140 B-70 |
IntegrationID
N/A 184927 |
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 2.237 in56.82 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -140 |
BS140 B-90 |
IntegrationID
N/A 184928 |
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 2.237 in56.82 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -140 |
BS139 B-70 |
IntegrationID
N/A 184929 |
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 2.175 in55.25 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -139 |
BS139 B-90 |
IntegrationID
N/A 184930 |
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 2.175 in55.25 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -139 |
BS138 B-70 |
IntegrationID
N/A 184931 |
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 2.112 in53.64 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -138 |
BS138 B-90 |
IntegrationID
N/A 184932 |
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 2.112 in53.64 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -138 |
BS137 B-70 |
IntegrationID
N/A 184933 |
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 2.050 in52.07 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -137 |
BS137 B-90 |
IntegrationID
N/A 184934 |
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 2.050 in52.07 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -137 |
BS136 B-70 |
IntegrationID
N/A 184935 |
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 1.987 in50.47 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -136 |
BS136 B-90 |
IntegrationID
N/A 184936 |
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 1.987 in50.47 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -136 |
BS135 B-70 |
IntegrationID
N/A 184937 |
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 1.925 in48.90 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -135 |
BS135 B-90 |
IntegrationID
N/A 184938 |
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 1.925 in48.90 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -135 |
BS134 B-70 |
IntegrationID
N/A 184939 |
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 1.862 in47.29 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -134 |
BS134 B-90 |
IntegrationID
N/A 184940 |
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 1.862 in47.29 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -134 |
BS133 B-70 |
IntegrationID
N/A 184941 |
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 1.799 in45.69 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -133 |
BS133 B-90 |
IntegrationID
N/A 184942 |
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 1.799 in45.69 mm | CSW Tolerance N/A 0.003 in0.08 mm | BS Number N/A -133 |
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