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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
184543 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 11.975 in304.17 mm N/A 0.005 in0.13 mm N/A -381
N/A
184544 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 11.975 in304.17 mm N/A 0.005 in0.13 mm N/A -381
N/A
184545 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 11.475 in291.47 mm N/A 0.005 in0.13 mm N/A -380
N/A
184546 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 11.475 in291.47 mm N/A 0.005 in0.13 mm N/A -380
N/A
184547 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 10.975 in278.77 mm N/A 0.005 in0.13 mm N/A -379
N/A
184548 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 10.975 in278.77 mm N/A 0.005 in0.13 mm N/A -379
N/A
184549 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 10.475 in266.07 mm N/A 0.005 in0.13 mm N/A -378
N/A
184550 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 10.475 in266.07 mm N/A 0.005 in0.13 mm N/A -378
N/A
184551 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 9.975 in253.37 mm N/A 0.005 in0.13 mm N/A -377
N/A
184552 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 9.975 in253.37 mm N/A 0.005 in0.13 mm N/A -377
N/A
184553 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 9.725 in247.02 mm N/A 0.005 in0.13 mm N/A -376
N/A
184554 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 9.725 in247.02 mm N/A 0.005 in0.13 mm N/A -376
N/A
184555 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 9.475 in240.67 mm N/A 0.005 in0.13 mm N/A -375
N/A
184556 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 9.475 in240.67 mm N/A 0.005 in0.13 mm N/A -375
N/A
184557 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 9.225 in234.32 mm N/A 0.005 in0.13 mm N/A -374
N/A
184558 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 9.225 in234.32 mm N/A 0.005 in0.13 mm N/A -374
N/A
184559 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 8.975 in227.97 mm N/A 0.005 in0.13 mm N/A -373
N/A
184560 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 8.975 in227.97 mm N/A 0.005 in0.13 mm N/A -373
N/A
184561 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 8.725 in221.62 mm N/A 0.005 in0.13 mm N/A -372
N/A
184562 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 8.725 in221.62 mm N/A 0.005 in0.13 mm N/A -372
N/A
184563 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 8.475 in215.27 mm N/A 0.005 in0.13 mm N/A -371
N/A
184564 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 8.475 in215.27 mm N/A 0.005 in0.13 mm N/A -371
N/A
184565 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 8.225 in208.92 mm N/A 0.005 in0.13 mm N/A -370
N/A
184566 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 8.225 in208.92 mm N/A 0.005 in0.13 mm N/A -370
N/A
184567 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 7.975 in202.57 mm N/A 0.005 in0.13 mm N/A -369
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