Monroe
OneMonroe
Locations Throughout the Country
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Tel: (877) 740-2007
Fax: (800) 453-9683
Email: sales@askmonroe.com
Website: monroeengineering.com
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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
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Item #

IntegrationID

Type

Material

Cross Section Width

Durometer

Inside Diameter

CSW Tolerance

BS Number

Quantity
BS107 B-70 N/A
184993 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 70 N/A 0.206 in5.23 mm N/A 0.003 in0.08 mm N/A -107
BS107 B-90 N/A
184994 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 90 N/A 0.206 in5.23 mm N/A 0.003 in0.08 mm N/A -107
BS106 B-70 N/A
184995 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 70 N/A 0.175 in4.45 mm N/A 0.003 in0.08 mm N/A -106
BS106 B-90 N/A
184996 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 90 N/A 0.175 in4.45 mm N/A 0.003 in0.08 mm N/A -106
BS105 B-70 N/A
184997 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 70 N/A 0.143 in3.63 mm N/A 0.003 in0.08 mm N/A -105
BS105 B-90 N/A
184998 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 90 N/A 0.143 in3.63 mm N/A 0.003 in0.08 mm N/A -105
BS104 B-70 N/A
184999 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 70 N/A 0.112 in2.84 mm N/A 0.003 in0.08 mm N/A -104
BS104 B-90 N/A
185000 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 90 N/A 0.112 in2.84 mm N/A 0.003 in0.08 mm N/A -104
BS103 B-70 N/A
185001 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 70 N/A 0.081 in2.06 mm N/A 0.003 in0.08 mm N/A -103
BS103 B-90 N/A
185002 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 90 N/A 0.081 in2.06 mm N/A 0.003 in0.08 mm N/A -103
BS102 B-70 N/A
185003 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 70 N/A 0.049 in1.24 mm N/A 0.003 in0.08 mm N/A -102
BS102 B-90 N/A
185004 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 90 N/A 0.049 in1.24 mm N/A 0.003 in0.08 mm N/A -102
BS50 B-70 N/A
185005 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 5.239 in133.07 mm N/A 0.003 in0.08 mm N/A -050
BS50 B-90 N/A
185006 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 5.239 in133.07 mm N/A 0.003 in0.08 mm N/A -050
BS49 B-70 N/A
185007 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 4.989 in126.72 mm N/A 0.003 in0.08 mm N/A -049
BS49 B-90 N/A
185008 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 4.989 in126.72 mm N/A 0.003 in0.08 mm N/A -049
BS48 B-70 N/A
185009 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 4.739 in120.37 mm N/A 0.003 in0.08 mm N/A -048
BS48 B-90 N/A
185010 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 4.739 in120.37 mm N/A 0.003 in0.08 mm N/A -048
BS47 B-70 N/A
185011 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 4.489 in114.02 mm N/A 0.003 in0.08 mm N/A -047
BS47 B-90 N/A
185012 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 4.489 in114.02 mm N/A 0.003 in0.08 mm N/A -047
BS46 B-70 N/A
185013 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 4.239 in107.67 mm N/A 0.003 in0.08 mm N/A -046
BS46 B-90 N/A
185014 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 4.239 in107.67 mm N/A 0.003 in0.08 mm N/A -046
BS45 B-70 N/A
185015 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 3.989 in101.32 mm N/A 0.003 in0.08 mm N/A -045
BS45 B-90 N/A
185016 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 3.989 in101.32 mm N/A 0.003 in0.08 mm N/A -045
BS44 B-70 N/A
185017 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 3.739 in94.97 mm N/A 0.003 in0.08 mm N/A -044
Unit of Measure
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