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  • 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)

Durometer

Inside Diameter (in)

Inside Diameter (mm)

Item #

IntegrationID

Type

Material

Cross Section Width

Durometer

Inside Diameter

CSW Tolerance

BS Number

N/A
184668 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 1.037 in26.34 mm N/A 0.005 in0.13 mm N/A -319
N/A
184669 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 0.975 in24.77 mm N/A 0.005 in0.13 mm N/A -318
N/A
184670 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 0.975 in24.77 mm N/A 0.005 in0.13 mm N/A -318
N/A
184671 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 0.912 in23.16 mm N/A 0.005 in0.13 mm N/A -317
N/A
184672 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 0.912 in23.16 mm N/A 0.005 in0.13 mm N/A -317
N/A
184673 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 0.850 in21.59 mm N/A 0.005 in0.13 mm N/A -316
N/A
184674 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 0.850 in21.59 mm N/A 0.005 in0.13 mm N/A -316
N/A
184675 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 0.787 in19.99 mm N/A 0.005 in0.13 mm N/A -315
N/A
184676 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 0.787 in19.99 mm N/A 0.005 in0.13 mm N/A -315
N/A
184677 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 0.725 in18.42 mm N/A 0.005 in0.13 mm N/A -314
N/A
184678 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 0.725 in18.42 mm N/A 0.005 in0.13 mm N/A -314
N/A
184679 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 0.662 in16.81 mm N/A 0.005 in0.13 mm N/A -313
N/A
184680 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 0.662 in16.81 mm N/A 0.005 in0.13 mm N/A -313
N/A
184681 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 0.600 in15.24 mm N/A 0.005 in0.13 mm N/A -312
N/A
184682 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 0.600 in15.24 mm N/A 0.005 in0.13 mm N/A -312
N/A
184683 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 0.537 in13.64 mm N/A 0.005 in0.13 mm N/A -311
N/A
184684 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 0.537 in13.64 mm N/A 0.005 in0.13 mm N/A -311
N/A
184685 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 0.475 in12.07 mm N/A 0.005 in0.13 mm N/A -310
N/A
184686 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 0.475 in12.07 mm N/A 0.005 in0.13 mm N/A -310
N/A
184687 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 0.412 in10.46 mm N/A 0.005 in0.13 mm N/A -309
N/A
184688 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 0.412 in10.46 mm N/A 0.005 in0.13 mm N/A -309
N/A
184689 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 70 N/A 14.984 in380.59 mm N/A 0.004 in0.10 mm N/A -281
N/A
184690 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 90 N/A 14.984 in380.59 mm N/A 0.004 in0.10 mm N/A -281
N/A
184691 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 70 N/A 13.984 in355.19 mm N/A 0.004 in0.10 mm N/A -280
N/A
184692 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 90 N/A 13.984 in355.19 mm N/A 0.004 in0.10 mm N/A -280
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