Monroe
OneMonroe
Locations Throughout the Country
ISO 9001:2015
Tel: (877) 740-2007
Fax: (800) 453-9683
Email: sales@askmonroe.com
Website: monroeengineering.com
Print Back

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.

BS O-Rings
Unit of Measure
 1 2 3 4 5 »  

Item #

IntegrationID

Type

Material

Cross Section Width

Durometer

Inside Diameter

CSW Tolerance

BS Number

Quantity
BS842 B-70 N/A
184243 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 70 N/A 2.687 in68.25 mm N/A 0.004 in0.10 mm N/A -842
BS842 B-90 N/A
184244 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 90 N/A 2.687 in68.25 mm N/A 0.004 in0.10 mm N/A -842
BS841 B-70 N/A
184245 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 70 N/A 2.625 in66.68 mm N/A 0.004 in0.10 mm N/A -841
BS841 B-90 N/A
184246 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 90 N/A 2.625 in66.68 mm N/A 0.004 in0.10 mm N/A -841
BS840 B-70 N/A
184247 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 70 N/A 2.563 in65.1 mm N/A 0.004 in0.10 mm N/A -840
BS840 B-90 N/A
184248 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 90 N/A 2.563 in65.1 mm N/A 0.004 in0.10 mm N/A -840
BS839 B-70 N/A
184249 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 70 N/A 2.500 in63.50 mm N/A 0.004 in0.10 mm N/A -839
BS839 B-90 N/A
184250 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 90 N/A 2.500 in63.50 mm N/A 0.004 in0.10 mm N/A -839
BS838 B-70 N/A
184251 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 70 N/A 2.437 in61.90 mm N/A 0.004 in0.10 mm N/A -838
BS838 B-90 N/A
184252 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 90 N/A 2.437 in61.90 mm N/A 0.004 in0.10 mm N/A -838
BS837 B-70 N/A
184253 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 70 N/A 2.375 in60.33 mm N/A 0.004 in0.10 mm N/A -837
BS837 B-90 N/A
184254 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 90 N/A 2.375 in60.33 mm N/A 0.004 in0.10 mm N/A -837
BS836 B-70 N/A
184255 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 70 N/A 2.313 in58.74 mm N/A 0.004 in0.10 mm N/A -836
BS836 B-90 N/A
184256 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 90 N/A 2.313 in58.74 mm N/A 0.004 in0.10 mm N/A -836
BS835 B-70 N/A
184257 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 70 N/A 2.25 in57.15 mm N/A 0.004 in0.10 mm N/A -835
BS835 B-90 N/A
184258 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 90 N/A 2.25 in57.15 mm N/A 0.004 in0.10 mm N/A -835
BS834 B-70 N/A
184259 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 70 N/A 2.187 in55.55 mm N/A 0.004 in0.10 mm N/A -834
BS834 B-90 N/A
184260 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 90 N/A 2.187 in55.55 mm N/A 0.004 in0.10 mm N/A -834
BS833 B-70 N/A
184261 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 70 N/A 2.125 in53.98 mm N/A 0.004 in0.10 mm N/A -833
BS833 B-90 N/A
184262 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 90 N/A 2.125 in53.98 mm N/A 0.004 in0.10 mm N/A -833
BS832 B-70 N/A
184263 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 70 N/A 2.063 in52.39 mm N/A 0.004 in0.10 mm N/A -832
BS832 B-90 N/A
184264 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 90 N/A 2.063 in52.39 mm N/A 0.004 in0.10 mm N/A -832
BS831 B-70 N/A
184265 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 70 N/A 2.000 in50.80 mm N/A 0.004 in0.10 mm N/A -831
BS831 B-90 N/A
184266 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 90 N/A 2.000 in50.80 mm N/A 0.004 in0.10 mm N/A -831
BS830 B-70 N/A
184267 		N/A BS Standard O-Ring N/A Buna N/A 0.139 in3.53 mm N/A 70 N/A 1.937 in49.20 mm N/A 0.004 in0.10 mm N/A -830
Unit of Measure
 1 2 3 4 5 »