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
BS19 B-90 N/A
185068 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 0.801 in20.35 mm N/A 0.003 in0.08 mm N/A -019
BS18 B-70 N/A
185069 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 0.739 in18.77 mm N/A 0.003 in0.08 mm N/A -018
BS18 B-90 N/A
185070 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 0.739 in18.77 mm N/A 0.003 in0.08 mm N/A -018
BS17 B-70 N/A
185071 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 0.676 in17.17 mm N/A 0.003 in0.08 mm N/A -017
BS17 B-90 N/A
185072 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 0.676 in17.17 mm N/A 0.003 in0.08 mm N/A -017
BS16 B-70 N/A
185073 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 0.614 in15.6 mm N/A 0.003 in0.08 mm N/A -016
BS16 B-90 N/A
185074 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 0.614 in15.6 mm N/A 0.003 in0.08 mm N/A -016
BS15 B-70 N/A
185075 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 0.551 in14.00 mm N/A 0.003 in0.08 mm N/A -015
BS15 B-90 N/A
185076 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 0.551 in14.00 mm N/A 0.003 in0.08 mm N/A -015
BS14 B-70 N/A
185077 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 0.489 in12.42 mm N/A 0.003 in0.08 mm N/A -014
BS14 B-90 N/A
185078 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 0.489 in12.42 mm N/A 0.003 in0.08 mm N/A -014
BS13 B-70 N/A
185079 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 0.426 in10.82 mm N/A 0.003 in0.08 mm N/A -013
BS13 B-90 N/A
185080 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 0.426 in10.82 mm N/A 0.003 in0.08 mm N/A -013
BS12 B-70 N/A
185081 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 0.364 in9.25 mm N/A 0.003 in0.08 mm N/A -012
BS12 B-90 N/A
185082 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 0.364 in9.25 mm N/A 0.003 in0.08 mm N/A -012
BS11 B-70 N/A
185083 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 0.301 in7.65 mm N/A 0.003 in0.08 mm N/A -011
BS11 B-90 N/A
185084 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 0.301 in7.65 mm N/A 0.003 in0.08 mm N/A -011
BS10 B-70 N/A
185085 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 0.239 in6.07 mm N/A 0.003 in0.08 mm N/A -010
BS10 B-90 N/A
185086 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 0.239 in6.07 mm N/A 0.003 in0.08 mm N/A -010
BS9 B-70 N/A
185087 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 0.208 in5.28 mm N/A 0.003 in0.08 mm N/A -009
BS9 B-90 N/A
185088 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 0.208 in5.28 mm N/A 0.003 in0.08 mm N/A -009
BS8 B-70 N/A
185089 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 0.176 in4.47 mm N/A 0.003 in0.08 mm N/A -008
BS8 B-90 N/A
185090 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 0.176 in4.47 mm N/A 0.003 in0.08 mm N/A -008
BS7 B-70 N/A
185091 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 0.145 in3.68 mm N/A 0.003 in0.08 mm N/A -007
BS7 B-90 N/A
185092 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 0.145 in3.68 mm N/A 0.003 in0.08 mm N/A -007
Unit of Measure
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