• 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 (in)

Cross Section Width (mm)

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Inside Diameter (in)

Inside Diameter (mm)

Item #

IntegrationID

Type

Material

Cross Section Width

Durometer

Inside Diameter

CSW Tolerance

BS Number

N/A
184343 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 2.938 in74.61 mm N/A 0.005 in0.13 mm N/A -619
N/A
184344 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 2.938 in74.61 mm N/A 0.005 in0.13 mm N/A -619
N/A
184345 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 70 N/A 1.016 in25.81 mm N/A 0.004 in0.10 mm N/A -618
N/A
184346 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 90 N/A 1.016 in25.81 mm N/A 0.004 in0.10 mm N/A -618
N/A
184347 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 70 N/A 0.703 in17.86 mm N/A 0.003 in0.08 mm N/A -617
N/A
184348 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 90 N/A 0.703 in17.86 mm N/A 0.003 in0.08 mm N/A -617
N/A
184349 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 70 N/A 0.594 in15.09 mm N/A 0.003 in0.08 mm N/A -616
N/A
184350 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 90 N/A 0.594 in15.09 mm N/A 0.003 in0.08 mm N/A -616
N/A
184351 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 70 N/A 0.516 in13.11 mm N/A 0.003 in0.08 mm N/A -615
N/A
184352 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 90 N/A 0.516 in13.11 mm N/A 0.003 in0.08 mm N/A -615
N/A
184353 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 70 N/A 0.469 in11.91 mm N/A 0.003 in0.08 mm N/A -614
N/A
184354 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 90 N/A 0.469 in11.91 mm N/A 0.003 in0.08 mm N/A -614
N/A
184355 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 70 N/A 0.391 in9.93 mm N/A 0.003 in0.08 mm N/A -613
N/A
184356 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 90 N/A 0.391 in9.93 mm N/A 0.003 in0.08 mm N/A -613
N/A
184357 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 0.344 in8.74 mm N/A 0.003 in0.08 mm N/A -611
N/A
184358 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 0.344 in8.74 mm N/A 0.003 in0.08 mm N/A -611
N/A
184359 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 0.266 in6.76 mm N/A 0.003 in0.08 mm N/A -610
N/A
184360 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 0.266 in6.76 mm N/A 0.003 in0.08 mm N/A -610
N/A
184361 		N/A BS Standard O-Ring N/A Buna N/A 0.040 in1.02 mm N/A 70 N/A 0.100 in2.54 mm N/A 0.003 in0.08 mm N/A -607
N/A
184362 		N/A BS Standard O-Ring N/A Buna N/A 0.040 in1.02 mm N/A 90 N/A 0.100 in2.54 mm N/A 0.003 in0.08 mm N/A -607
N/A
184363 		N/A BS Standard O-Ring N/A Buna N/A 0.040 in1.02 mm N/A 70 N/A 0.070 in1.78 mm N/A 0.003 in0.08 mm N/A -606
N/A
184364 		N/A BS Standard O-Ring N/A Buna N/A 0.040 in1.02 mm N/A 90 N/A 0.070 in1.78 mm N/A 0.003 in0.08 mm N/A -606
N/A
184365 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 6.845 in173.86 mm N/A 0.003 in0.08 mm N/A -562
N/A
184366 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 6.845 in173.86 mm N/A 0.003 in0.08 mm N/A -562
N/A
184367 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 6.72 in170.69 mm N/A 0.003 in0.08 mm N/A -561
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