• BS O-Rings

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.

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Cross Section Width (mm)

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Inside Diameter (mm)

Item #

IntegrationID

Type

Material

Cross Section Width

Durometer

Inside Diameter

CSW Tolerance

BS Number

N/A
184268 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 90 N/A 1.937 in49.20 mm N/A 0.004 in0.10 mm N/A -830
N/A
184269 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 70 N/A 1.875 in47.63 mm N/A 0.004 in0.10 mm N/A -829
N/A
184270 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 90 N/A 1.875 in47.63 mm N/A 0.004 in0.10 mm N/A -829
N/A
184271 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 70 N/A 1.813 in46.04 mm N/A 0.004 in0.10 mm N/A -828
N/A
184272 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 90 N/A 1.813 in46.04 mm N/A 0.004 in0.10 mm N/A -828
N/A
184273 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 70 N/A 1.75 in44.45 mm N/A 0.004 in0.10 mm N/A -827
N/A
184274 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 90 N/A 1.75 in44.45 mm N/A 0.004 in0.10 mm N/A -827
N/A
184275 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 70 N/A 1.687 in42.85 mm N/A 0.004 in0.10 mm N/A -826
N/A
184276 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 90 N/A 1.687 in42.85 mm N/A 0.004 in0.10 mm N/A -826
N/A
184277 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 70 N/A 1.625 in41.28 mm N/A 0.004 in0.10 mm N/A -825
N/A
184278 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 90 N/A 1.625 in41.28 mm N/A 0.004 in0.10 mm N/A -825
N/A
184279 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 70 N/A 1.563 in39.70 mm N/A 0.004 in0.10 mm N/A -824
N/A
184280 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 90 N/A 1.563 in39.70 mm N/A 0.004 in0.10 mm N/A -824
N/A
184281 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 70 N/A 0.937 in23.80 mm N/A 0.003 in0.08 mm N/A -814
N/A
184282 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 90 N/A 0.937 in23.80 mm N/A 0.003 in0.08 mm N/A -814
N/A
184283 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 70 N/A 0.875 in22.23 mm N/A 0.003 in0.08 mm N/A -813
N/A
184284 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 90 N/A 0.875 in22.23 mm N/A 0.003 in0.08 mm N/A -813
N/A
184285 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 70 N/A 0.812 in20.62 mm N/A 0.003 in0.08 mm N/A -812
N/A
184286 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 90 N/A 0.812 in20.62 mm N/A 0.003 in0.08 mm N/A -812
N/A
184287 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 70 N/A 0.687 in17.45 mm N/A 0.003 in0.08 mm N/A -810
N/A
184288 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 90 N/A 0.687 in17.45 mm N/A 0.003 in0.08 mm N/A -810
N/A
184289 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 70 N/A 0.625 in15.88 mm N/A 0.003 in0.08 mm N/A -809
N/A
184290 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 90 N/A 0.625 in15.88 mm N/A 0.003 in0.08 mm N/A -809
N/A
184291 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 70 N/A 0.500 in12.70 mm N/A 0.003 in0.08 mm N/A -807
N/A
184292 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 90 N/A 0.500 in12.70 mm N/A 0.003 in0.08 mm N/A -807
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