• 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 (in)

Inside Diameter (mm)

Item #

IntegrationID

Type

Material

Cross Section Width

Durometer

Inside Diameter

CSW Tolerance

BS Number

N/A
184368 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 6.72 in170.69 mm N/A 0.003 in0.08 mm N/A -561
N/A
184369 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 6.695 in170.05 mm N/A 0.003 in0.08 mm N/A -560
N/A
184370 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 6.695 in170.05 mm N/A 0.003 in0.08 mm N/A -560
N/A
184371 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 6.470 in164.34 mm N/A 0.003 in0.08 mm N/A -559
N/A
184372 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 6.470 in164.34 mm N/A 0.003 in0.08 mm N/A -559
N/A
184373 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 6.345 in161.16 mm N/A 0.003 in0.08 mm N/A -558
N/A
184374 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 6.345 in161.16 mm N/A 0.003 in0.08 mm N/A -558
N/A
184375 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 6.22 in157.99 mm N/A 0.003 in0.08 mm N/A -557
N/A
184376 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 6.22 in157.99 mm N/A 0.003 in0.08 mm N/A -557
N/A
184377 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 6.095 in154.81 mm N/A 0.003 in0.08 mm N/A -556
N/A
184378 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 6.095 in154.81 mm N/A 0.003 in0.08 mm N/A -556
N/A
184379 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 5.97 in151.64 mm N/A 0.003 in0.08 mm N/A -555
N/A
184380 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 5.97 in151.64 mm N/A 0.003 in0.08 mm N/A -555
N/A
184381 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 5.845 in148.46 mm N/A 0.003 in0.08 mm N/A -554
N/A
184382 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 5.845 in148.46 mm N/A 0.003 in0.08 mm N/A -554
N/A
184383 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 5.72 in145.29 mm N/A 0.003 in0.08 mm N/A -553
N/A
184384 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 5.72 in145.29 mm N/A 0.003 in0.08 mm N/A -553
N/A
184385 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 5.595 in142.11 mm N/A 0.003 in0.08 mm N/A -552
N/A
184386 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 5.595 in142.11 mm N/A 0.003 in0.08 mm N/A -552
N/A
184387 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 5.47 in138.94 mm N/A 0.003 in0.08 mm N/A -551
N/A
184388 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 5.47 in138.94 mm N/A 0.003 in0.08 mm N/A -551
N/A
184389 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 5.345 in135.76 mm N/A 0.003 in0.08 mm N/A -550
N/A
184390 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 5.345 in135.76 mm N/A 0.003 in0.08 mm N/A -550
N/A
184391 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 5.095 in129.41 mm N/A 0.003 in0.08 mm N/A -548
N/A
184392 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 5.095 in129.41 mm N/A 0.003 in0.08 mm N/A -548
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