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 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

Product Guides

Quantity
BS435 AFLAS-75 N/A
186658 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 5.73 in145.42 mm N/A 0.006 in0.15 mm N/A -435 N/A Seal Guides
BS434 AFLAS-75 N/A
186659 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 5.60 in142.24 mm N/A 0.006 in0.15 mm N/A -434 N/A Seal Guides
BS433 AFLAS-75 N/A
186660 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 5.48 in139.07 mm N/A 0.006 in0.15 mm N/A -433 N/A Seal Guides
BS432 AFLAS-75 N/A
186661 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 5.35 in135.89 mm N/A 0.006 in0.15 mm N/A -432 N/A Seal Guides
BS431 AFLAS-75 N/A
186662 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 5.23 in132.72 mm N/A 0.006 in0.15 mm N/A -431 N/A Seal Guides
BS430 AFLAS-75 N/A
186663 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 5.10 in129.54 mm N/A 0.006 in0.15 mm N/A -430 N/A Seal Guides
BS429 AFLAS-75 N/A
186664 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 4.98 in126.37 mm N/A 0.006 in0.15 mm N/A -429 N/A Seal Guides
BS428 AFLAS-75 N/A
186665 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 4.85 in123.19 mm N/A 0.006 in0.15 mm N/A -428 N/A Seal Guides
BS427 AFLAS-75 N/A
186666 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 4.73 in120.02 mm N/A 0.006 in0.15 mm N/A -427 N/A Seal Guides
BS426 AFLAS-75 N/A
186667 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 4.60 in116.84 mm N/A 0.006 in0.15 mm N/A -426 N/A Seal Guides
BS425 AFLAS-75 N/A
186668 		N/A BS Standard O-Ring N/A Aflas N/A 0.275 in6.99 mm N/A 75 N/A 4.48 in113.67 mm N/A 0.006 in0.15 mm N/A -425 N/A Seal Guides
BS395 AFLAS-75 N/A
186669 		N/A BS Standard O-Ring N/A Aflas N/A 0.210 in5.33 mm N/A 75 N/A 25.94 in658.88 mm N/A 0.005 in0.13 mm N/A -395 N/A Seal Guides
BS394 AFLAS-75 N/A
186670 		N/A BS Standard O-Ring N/A Aflas N/A 0.210 in5.33 mm N/A 75 N/A 24.94 in633.48 mm N/A 0.005 in0.13 mm N/A -394 N/A Seal Guides
BS393 AFLAS-75 N/A
186671 		N/A BS Standard O-Ring N/A Aflas N/A 0.210 in5.33 mm N/A 75 N/A 29.85 in758.08 mm N/A 0.005 in0.13 mm N/A -393 N/A Seal Guides
BS392 AFLAS-75 N/A
186672 		N/A BS Standard O-Ring N/A Aflas N/A 0.210 in5.33 mm N/A 75 N/A 22.94 in582.68 mm N/A 0.005 in0.13 mm N/A -392 N/A Seal Guides
BS391 AFLAS-75 N/A
186673 		N/A BS Standard O-Ring N/A Aflas N/A 0.210 in5.33 mm N/A 75 N/A 21.96 in557.66 mm N/A 0.005 in0.13 mm N/A -391 N/A Seal Guides
BS390 AFLAS-75 N/A
186674 		N/A BS Standard O-Ring N/A Aflas N/A 0.210 in5.33 mm N/A 75 N/A 20.96 in532.26 mm N/A 0.005 in0.13 mm N/A -390 N/A Seal Guides
BS389 AFLAS-75 N/A
186675 		N/A BS Standard O-Ring N/A Aflas N/A 0.210 in5.33 mm N/A 75 N/A 19.96 in506.86 mm N/A 0.005 in0.13 mm N/A -389 N/A Seal Guides
BS388 AFLAS-75 N/A
186676 		N/A BS Standard O-Ring N/A Aflas N/A 0.210 in5.33 mm N/A 75 N/A 18.96 in481.46 mm N/A 0.005 in0.13 mm N/A -388 N/A Seal Guides
BS387 AFLAS-75 N/A
186677 		N/A BS Standard O-Ring N/A Aflas N/A 0.210 in5.33 mm N/A 75 N/A 17.96 in456.06 mm N/A 0.005 in0.13 mm N/A -387 N/A Seal Guides
BS386 AFLAS-75 N/A
186678 		N/A BS Standard O-Ring N/A Aflas N/A 0.210 in5.33 mm N/A 75 N/A 16.96 in430.66 mm N/A 0.005 in0.13 mm N/A -386 N/A Seal Guides
BS385 AFLAS-75 N/A
186679 		N/A BS Standard O-Ring N/A Aflas N/A 0.210 in5.33 mm N/A 75 N/A 15.96 in405.26 mm N/A 0.005 in0.13 mm N/A -385 N/A Seal Guides
BS384 AFLAS-75 N/A
186680 		N/A BS Standard O-Ring N/A Aflas N/A 0.210 in5.33 mm N/A 75 N/A 14.98 in380.37 mm N/A 0.005 in0.13 mm N/A -384 N/A Seal Guides
BS383 AFLAS-75 N/A
186681 		N/A BS Standard O-Ring N/A Aflas N/A 0.210 in5.33 mm N/A 75 N/A 13.98 in354.97 mm N/A 0.005 in0.13 mm N/A -383 N/A Seal Guides
BS382 AFLAS-75 N/A
186682 		N/A BS Standard O-Ring N/A Aflas N/A 0.210 in5.33 mm N/A 75 N/A 12.98 in329.57 mm N/A 0.005 in0.13 mm N/A -382 N/A Seal Guides
Unit of Measure
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