• 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
184468 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 90 N/A 9.475 in240.67 mm N/A 0.006 in0.15 mm N/A -448
N/A
184469 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 70 N/A 8.975 in227.97 mm N/A 0.006 in0.15 mm N/A -447
N/A
184470 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 90 N/A 8.975 in227.97 mm N/A 0.006 in0.15 mm N/A -447
N/A
184471 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 70 N/A 8.475 in215.27 mm N/A 0.006 in0.15 mm N/A -446
N/A
184472 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 90 N/A 8.475 in215.27 mm N/A 0.006 in0.15 mm N/A -446
N/A
184473 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 70 N/A 7.975 in202.57 mm N/A 0.006 in0.15 mm N/A -445
N/A
184474 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 90 N/A 7.975 in202.57 mm N/A 0.006 in0.15 mm N/A -445
N/A
184475 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 70 N/A 7.725 in196.22 mm N/A 0.006 in0.15 mm N/A -444
N/A
184476 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 90 N/A 7.725 in196.22 mm N/A 0.006 in0.15 mm N/A -444
N/A
184477 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 70 N/A 7.475 in189.87 mm N/A 0.006 in0.15 mm N/A -443
N/A
184478 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 90 N/A 7.475 in189.87 mm N/A 0.006 in0.15 mm N/A -443
N/A
184479 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 70 N/A 7.225 in183.52 mm N/A 0.006 in0.15 mm N/A -442
N/A
184480 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 90 N/A 7.225 in183.52 mm N/A 0.006 in0.15 mm N/A -442
N/A
184481 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 70 N/A 6.975 in177.17 mm N/A 0.006 in0.15 mm N/A -441
N/A
184482 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 90 N/A 6.975 in177.17 mm N/A 0.006 in0.15 mm N/A -441
N/A
184483 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 70 N/A 6.725 in170.82 mm N/A 0.006 in0.15 mm N/A -440
N/A
184484 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 90 N/A 6.725 in170.82 mm N/A 0.006 in0.15 mm N/A -440
N/A
184485 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 70 N/A 6.475 in164.47 mm N/A 0.006 in0.15 mm N/A -439
N/A
184486 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 90 N/A 6.475 in164.47 mm N/A 0.006 in0.15 mm N/A -439
N/A
184487 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 70 N/A 6.225 in158.12 mm N/A 0.006 in0.15 mm N/A -438
N/A
184488 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 90 N/A 6.225 in158.12 mm N/A 0.006 in0.15 mm N/A -438
N/A
184489 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 70 N/A 5.975 in151.77 mm N/A 0.006 in0.15 mm N/A -437
N/A
184490 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 90 N/A 5.975 in151.77 mm N/A 0.006 in0.15 mm N/A -437
N/A
184491 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 70 N/A 5.850 in148.59 mm N/A 0.006 in0.15 mm N/A -436
N/A
184492 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 90 N/A 5.850 in148.59 mm N/A 0.006 in0.15 mm N/A -436
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