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  • 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 (in)

Cross Section Width (mm)

Durometer

Inside Diameter (in)

Inside Diameter (mm)

Item #

IntegrationID

Type

Material

Cross Section Width

Durometer

Inside Diameter

CSW Tolerance

BS Number

N/A
184293 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 0.437 in11.10 mm N/A 0.003 in0.08 mm N/A -806
N/A
184294 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 0.437 in11.10 mm N/A 0.003 in0.08 mm N/A -806
N/A
184295 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 0.313 in7.94 mm N/A 0.003 in0.08 mm N/A -804
N/A
184296 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 0.313 in7.94 mm N/A 0.003 in0.08 mm N/A -804
N/A
184297 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 0.25 in6.35 mm N/A 0.003 in0.08 mm N/A -803
N/A
184298 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 0.25 in6.35 mm N/A 0.003 in0.08 mm N/A -803
N/A
184299 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 0.187 in4.75 mm N/A 0.003 in0.08 mm N/A -802
N/A
184300 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 0.187 in4.75 mm N/A 0.003 in0.08 mm N/A -802
N/A
184301 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 70 N/A 0.125 in3.18 mm N/A 0.003 in0.08 mm N/A -801
N/A
184302 		N/A BS Standard O-Ring N/A Buna N/A 0.070 in1.78 mm N/A 90 N/A 0.125 in3.18 mm N/A 0.003 in0.08 mm N/A -801
N/A
184303 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 70 N/A 13.225 in335.92 mm N/A 0.006 in0.15 mm N/A -650
N/A
184304 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 90 N/A 13.225 in335.92 mm N/A 0.006 in0.15 mm N/A -650
N/A
184305 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 70 N/A 12.725 in323.22 mm N/A 0.006 in0.15 mm N/A -649
N/A
184306 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 90 N/A 12.725 in323.22 mm N/A 0.006 in0.15 mm N/A -649
N/A
184307 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 70 N/A 12.225 in310.52 mm N/A 0.006 in0.15 mm N/A -648
N/A
184308 		N/A BS Standard O-Ring N/A Buna N/A 0.275 in6.99 mm N/A 90 N/A 12.225 in310.52 mm N/A 0.006 in0.15 mm N/A -648
N/A
184309 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 6.85 in173.99 mm N/A 0.005 in0.13 mm N/A -647
N/A
184310 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 6.85 in173.99 mm N/A 0.005 in0.13 mm N/A -647
N/A
184311 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 6.600 in167.64 mm N/A 0.005 in0.13 mm N/A -646
N/A
184312 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 6.600 in167.64 mm N/A 0.005 in0.13 mm N/A -646
N/A
184313 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 6.35 in161.29 mm N/A 0.005 in0.13 mm N/A -645
N/A
184314 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 6.35 in161.29 mm N/A 0.005 in0.13 mm N/A -645
N/A
184315 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 70 N/A 6.100 in154.94 mm N/A 0.005 in0.13 mm N/A -644
N/A
184316 		N/A BS Standard O-Ring N/A Buna N/A 0.210 in5.33 mm N/A 90 N/A 6.100 in154.94 mm N/A 0.005 in0.13 mm N/A -644
N/A
184317 		N/A BS Standard O-Ring N/A Buna N/A 0.103 in2.62 mm N/A 70 N/A 3.299 in83.79 mm N/A 0.003 in0.08 mm N/A -643
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