Monroe
OneMonroe
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Tel: (877) 740-2007
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Website: monroeengineering.com
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OneMonroe Aflas® O-Rings offer exceptional durability and resistance, engineered for high-performance applications where standard elastomers fall short. Made from Aflas® material, these O-rings are specifically designed to withstand challenging environments with extreme temperatures, chemicals, and aggressive fluids. Their outstanding resilience against oil, steam, acids, and alkalis makes them ideal for industries such as chemical processing, oil and gas, and automotive manufacturing, where exposure to such conditions is common. OneMonroe Aflas® O-Rings provide a reliable sealing solution that maintains its integrity and performance even in the most demanding applications.

The versatility of Aflas® material allows OneMonroe O-Rings to perform exceptionally in both high- and low-temperature ranges, ranging from -10°C to 200°C (14°F to 392°F). This unique thermal resistance ensures that these O-rings can be used effectively across a wide spectrum of applications, minimizing the need for frequent replacements and maintenance. In addition to temperature resilience, Aflas® O-Rings resist a variety of chemicals and fluids, including amines, bases, acids, and hydrocarbons. Their durability and adaptability make them a cost-effective choice for industries that demand long-lasting, reliable sealing solutions under extreme conditions.

OneMonroe’s commitment to quality ensures that each Aflas® O-Ring is manufactured with precision to meet rigorous industry standards. Available in a range of sizes and thicknesses, these O-rings offer flexibility in design while maintaining consistent, dependable sealing performance. With OneMonroe Aflas® O-Rings, you can be assured of high-quality components that deliver long-term reliability, reduce downtime, and support seamless operations across industries. Trust in OneMonroe to provide O-rings that uphold the highest standards in durability, chemical resistance, and thermal stability for all your specialized sealing needs.

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
BS279 AFLAS-75 N/A
186758 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 12.98 in329.79 mm N/A 0.004 in0.10 mm N/A -279
BS278 AFLAS-75 N/A
186759 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 11.98 in304.39 mm N/A 0.004 in0.10 mm N/A -278
BS277 AFLAS-75 N/A
186760 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 11.48 in291.69 mm N/A 0.004 in0.10 mm N/A -277
BS276 AFLAS-75 N/A
186761 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 10.98 in278.99 mm N/A 0.004 in0.10 mm N/A -276
BS275 AFLAS-75 N/A
186762 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 10.48 in266.29 mm N/A 0.004 in0.10 mm N/A -275
BS274 AFLAS-75 N/A
186763 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 9.98 in253.59 mm N/A 0.004 in0.10 mm N/A -274
BS273 AFLAS-75 N/A
186764 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 9.73 in247.24 mm N/A 0.004 in0.10 mm N/A -273
BS272 AFLAS-75 N/A
186765 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 9.48 in240.89 mm N/A 0.004 in0.10 mm N/A -272
BS271 AFLAS-75 N/A
186766 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 9.23 in234.54 mm N/A 0.004 in0.10 mm N/A -271
BS270 AFLAS-75 N/A
186767 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 8.98 in228.19 mm N/A 0.004 in0.10 mm N/A -270
BS269 AFLAS-75 N/A
186768 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 8.73 in221.84 mm N/A 0.004 in0.10 mm N/A -269
BS268 AFLAS-75 N/A
186769 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 8.48 in215.49 mm N/A 0.004 in0.10 mm N/A -268
BS267 AFLAS-75 N/A
186770 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 8.23 in209.14 mm N/A 0.004 in0.10 mm N/A -267
BS266 AFLAS-75 N/A
186771 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 7.98 in202.79 mm N/A 0.004 in0.10 mm N/A -266
BS265 AFLAS-75 N/A
186772 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 7.73 in196.44 mm N/A 0.004 in0.10 mm N/A -265
BS264 AFLAS-75 N/A
186773 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 7.48 in190.09 mm N/A 0.004 in0.10 mm N/A -264
BS263 AFLAS-75 N/A
186774 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 7.23 in183.74 mm N/A 0.004 in0.10 mm N/A -263
BS262 AFLAS-75 N/A
186775 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 6.98 in177.39 mm N/A 0.004 in0.10 mm N/A -262
BS261 AFLAS-75 N/A
186776 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 6.73 in171.04 mm N/A 0.004 in0.10 mm N/A -261
BS275 AFLAS-75 N/A
186777 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 6.48 in164.69 mm N/A 0.004 in0.10 mm N/A -275
BS259 AFLAS-75 N/A
186778 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 6.23 in158.34 mm N/A 0.004 in0.10 mm N/A -259
BS258 AFLAS-75 N/A
186779 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 5.98 in151.99 mm N/A 0.004 in0.10 mm N/A -258
BS257 AFLAS-75 N/A
186780 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 5.86 in148.82 mm N/A 0.004 in0.10 mm N/A -257
BS256 AFLAS-75 N/A
186781 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 5.73 in145.64 mm N/A 0.004 in0.10 mm N/A -256
BS255 AFLAS-75 N/A
186782 		N/A BS Standard O-Ring N/A Aflas N/A 0.139 in3.53 mm N/A 75 N/A 5.61 in142.47 mm N/A 0.004 in0.10 mm N/A -255
Unit of Measure
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