BS Buna O-Rings | OneMonroe

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.

Item #	IntegrationID	Type	Material	Cross Section Width	Durometer	Inside Diameter	CSW Tolerance	BS Number
BS217 B-90	N/A 184818	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 90	N/A 1.171 in29.74 mm	N/A 0.004 in0.10 mm	N/A -217
BS216 B-70	N/A 184819	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 70	N/A 1.109 in28.17 mm	N/A 0.004 in0.10 mm	N/A -216
BS216 B-90	N/A 184820	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 90	N/A 1.109 in28.17 mm	N/A 0.004 in0.10 mm	N/A -216
BS215 B-70	N/A 184821	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 70	N/A 1.046 in26.57 mm	N/A 0.004 in0.10 mm	N/A -215
BS215 B-90	N/A 184822	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 90	N/A 1.046 in26.57 mm	N/A 0.004 in0.10 mm	N/A -215
BS214 B-70	N/A 184823	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 70	N/A 0.984 in24.99 mm	N/A 0.004 in0.10 mm	N/A -214
BS214 B-90	N/A 184824	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 90	N/A 0.984 in24.99 mm	N/A 0.004 in0.10 mm	N/A -214
BS213 B-70	N/A 184825	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 70	N/A 0.921 in23.39 mm	N/A 0.004 in0.10 mm	N/A -213
BS213 B-90	N/A 184826	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 90	N/A 0.921 in23.39 mm	N/A 0.004 in0.10 mm	N/A -213
BS212 B-70	N/A 184827	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 70	N/A 0.859 in21.82 mm	N/A 0.004 in0.10 mm	N/A -212
BS212 B-90	N/A 184828	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 90	N/A 0.859 in21.82 mm	N/A 0.004 in0.10 mm	N/A -212
BS211 B-70	N/A 184829	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 70	N/A 0.796 in20.22 mm	N/A 0.004 in0.10 mm	N/A -211
BS211 B-90	N/A 184830	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 90	N/A 0.796 in20.22 mm	N/A 0.004 in0.10 mm	N/A -211
BS210 B-70	N/A 184831	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 70	N/A 0.734 in18.64 mm	N/A 0.004 in0.10 mm	N/A -210
BS210 B-90	N/A 184832	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 90	N/A 0.734 in18.64 mm	N/A 0.004 in0.10 mm	N/A -210
BS209 B-70	N/A 184833	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 70	N/A 0.672 in17.07 mm	N/A 0.004 in0.10 mm	N/A -209
BS209 B-90	N/A 184834	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 90	N/A 0.672 in17.07 mm	N/A 0.004 in0.10 mm	N/A -209
BS208 B-70	N/A 184835	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 70	N/A 0.609 in15.47 mm	N/A 0.004 in0.10 mm	N/A -208
BS208 B-90	N/A 184836	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 90	N/A 0.609 in15.47 mm	N/A 0.004 in0.10 mm	N/A -208
BS207 B-70	N/A 184837	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 70	N/A 0.549 in13.94 mm	N/A 0.004 in0.10 mm	N/A -207
BS207 B-90	N/A 184838	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 90	N/A 0.549 in13.94 mm	N/A 0.004 in0.10 mm	N/A -207
BS206 B-70	N/A 184839	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 70	N/A 0.484 in12.29 mm	N/A 0.004 in0.10 mm	N/A -206
BS206 B-90	N/A 184840	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 90	N/A 0.484 in12.29 mm	N/A 0.004 in0.10 mm	N/A -206
BS205 B-70	N/A 184841	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 70	N/A 0.421 in10.69 mm	N/A 0.004 in0.10 mm	N/A -205
BS205 B-90	N/A 184842	N/A BS Standard O-Ring	N/A Buna	N/A 0.139 in3.53 mm	N/A 90	N/A 0.421 in10.69 mm	N/A 0.004 in0.10 mm	N/A -205

N/A
184818

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 90

N/A 1.171 in29.74 mm

N/A 0.004 in0.10 mm

N/A -217

BS216 B-70

N/A
184819

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 70

N/A 1.109 in28.17 mm

N/A 0.004 in0.10 mm

N/A -216

BS216 B-90

N/A
184820

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 90

N/A 1.109 in28.17 mm

N/A 0.004 in0.10 mm

N/A -216

BS215 B-70

N/A
184821

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 70

N/A 1.046 in26.57 mm

N/A 0.004 in0.10 mm

N/A -215

BS215 B-90

N/A
184822

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 90

N/A 1.046 in26.57 mm

N/A 0.004 in0.10 mm

N/A -215

BS214 B-70

N/A
184823

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 70

N/A 0.984 in24.99 mm

N/A 0.004 in0.10 mm

N/A -214

BS214 B-90

N/A
184824

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 90

N/A 0.984 in24.99 mm

N/A 0.004 in0.10 mm

N/A -214

BS213 B-70

N/A
184825

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 70

N/A 0.921 in23.39 mm

N/A 0.004 in0.10 mm

N/A -213

BS213 B-90

N/A
184826

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 90

N/A 0.921 in23.39 mm

N/A 0.004 in0.10 mm

N/A -213

BS212 B-70

N/A
184827

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 70

N/A 0.859 in21.82 mm

N/A 0.004 in0.10 mm

N/A -212

BS212 B-90

N/A
184828

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 90

N/A 0.859 in21.82 mm

N/A 0.004 in0.10 mm

N/A -212

BS211 B-70

N/A
184829

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 70

N/A 0.796 in20.22 mm

N/A 0.004 in0.10 mm

N/A -211

BS211 B-90

N/A
184830

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 90

N/A 0.796 in20.22 mm

N/A 0.004 in0.10 mm

N/A -211

BS210 B-70

N/A
184831

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 70

N/A 0.734 in18.64 mm

N/A 0.004 in0.10 mm

N/A -210

BS210 B-90

N/A
184832

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 90

N/A 0.734 in18.64 mm

N/A 0.004 in0.10 mm

N/A -210

BS209 B-70

N/A
184833

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 70

N/A 0.672 in17.07 mm

N/A 0.004 in0.10 mm

N/A -209

BS209 B-90

N/A
184834

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 90

N/A 0.672 in17.07 mm

N/A 0.004 in0.10 mm

N/A -209

BS208 B-70

N/A
184835

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 70

N/A 0.609 in15.47 mm

N/A 0.004 in0.10 mm

N/A -208

BS208 B-90

N/A
184836

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 90

N/A 0.609 in15.47 mm

N/A 0.004 in0.10 mm

N/A -208

BS207 B-70

N/A
184837

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 70

N/A 0.549 in13.94 mm

N/A 0.004 in0.10 mm

N/A -207

BS207 B-90

N/A
184838

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 90

N/A 0.549 in13.94 mm

N/A 0.004 in0.10 mm

N/A -207

BS206 B-70

N/A
184839

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 70

N/A 0.484 in12.29 mm

N/A 0.004 in0.10 mm

N/A -206

BS206 B-90

N/A
184840

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 90

N/A 0.484 in12.29 mm

N/A 0.004 in0.10 mm

N/A -206

BS205 B-70

N/A
184841

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 70

N/A 0.421 in10.69 mm

N/A 0.004 in0.10 mm

N/A -205

BS205 B-90

N/A
184842

N/A BS Standard O-Ring

N/A Buna

N/A 0.139 in3.53 mm

N/A 90

N/A 0.421 in10.69 mm

N/A 0.004 in0.10 mm

N/A -205