BS Aflas O-Rings | OneMonroe

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.

Item #	IntegrationID	Type	Material	Cross Section Width	Durometer	Inside Diameter	CSW Tolerance	BS Number
BS561 AFLAS-83	N/A 187058	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 6.72 in170.69 mm	N/A 0.003 in0.08 mm	N/A -561
BS575 AFLAS-83	N/A 187059	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 6.69 in170.05 mm	N/A 0.003 in0.08 mm	N/A -575
BS559 AFLAS-83	N/A 187060	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 6.47 in164.34 mm	N/A 0.003 in0.08 mm	N/A -559
BS558 AFLAS-83	N/A 187061	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 6.34 in161.16 mm	N/A 0.003 in0.08 mm	N/A -558
BS557 AFLAS-83	N/A 187062	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 6.22 in157.99 mm	N/A 0.003 in0.08 mm	N/A -557
BS556 AFLAS-83	N/A 187063	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 6.09 in154.81 mm	N/A 0.003 in0.08 mm	N/A -556
BS555 AFLAS-83	N/A 187064	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 5.97 in151.64 mm	N/A 0.003 in0.08 mm	N/A -555
BS554 AFLAS-83	N/A 187065	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 5.84 in148.46 mm	N/A 0.003 in0.08 mm	N/A -554
BS553 AFLAS-83	N/A 187066	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 5.72 in145.29 mm	N/A 0.003 in0.08 mm	N/A -553
BS552 AFLAS-83	N/A 187067	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 5.59 in142.11 mm	N/A 0.003 in0.08 mm	N/A -552
BS551 AFLAS-83	N/A 187068	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 5.47 in138.94 mm	N/A 0.003 in0.08 mm	N/A -551
BS550 AFLAS-83	N/A 187069	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 5.34 in135.76 mm	N/A 0.003 in0.08 mm	N/A -550
BS548 AFLAS-83	N/A 187070	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 5.09 in129.41 mm	N/A 0.003 in0.08 mm	N/A -548
BS546 AFLAS-83	N/A 187071	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 4.86 in123.44 mm	N/A 0.003 in0.08 mm	N/A -546
BS544 AFLAS-83	N/A 187072	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 4.61 in117.09 mm	N/A 0.003 in0.08 mm	N/A -544
BS542 AFLAS-83	N/A 187073	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 4.36 in110.74 mm	N/A 0.003 in0.08 mm	N/A -542
BS540 AFLAS-83	N/A 187074	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 4.11 in104.39 mm	N/A 0.003 in0.08 mm	N/A -540
BS538 AFLAS-83	N/A 187075	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 3.86 in98.04 mm	N/A 0.003 in0.08 mm	N/A -538
BS536 AFLAS-83	N/A 187076	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 3.61 in91.69 mm	N/A 0.003 in0.08 mm	N/A -536
BS534 AFLAS-83	N/A 187077	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 3.36 in85.34 mm	N/A 0.003 in0.08 mm	N/A -534
BS532 AFLAS-83	N/A 187078	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 3.11 in78.99 mm	N/A 0.003 in0.08 mm	N/A -532
BS519 AFLAS-83	N/A 187079	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 1.55 in39.45 mm	N/A 0.003 in0.08 mm	N/A -519
BS517 AFLAS-83	N/A 187080	N/A BS Standard O-Ring	N/A Aflas	N/A 0.070 in1.78 mm	N/A 83	N/A 1.43 in36.27 mm	N/A 0.003 in0.08 mm	N/A -517
BS475 AFLAS-83	N/A 187081	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 25.94 in658.88 mm	N/A 0.006 in0.15 mm	N/A -475
BS474 AFLAS-83	N/A 187082	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 24.94 in633.48 mm	N/A 0.006 in0.15 mm	N/A -474

N/A
187058

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 6.72 in170.69 mm

N/A 0.003 in0.08 mm

N/A -561

BS575 AFLAS-83

N/A
187059

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 6.69 in170.05 mm

N/A 0.003 in0.08 mm

N/A -575

BS559 AFLAS-83

N/A
187060

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 6.47 in164.34 mm

N/A 0.003 in0.08 mm

N/A -559

BS558 AFLAS-83

N/A
187061

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 6.34 in161.16 mm

N/A 0.003 in0.08 mm

N/A -558

BS557 AFLAS-83

N/A
187062

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 6.22 in157.99 mm

N/A 0.003 in0.08 mm

N/A -557

BS556 AFLAS-83

N/A
187063

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 6.09 in154.81 mm

N/A 0.003 in0.08 mm

N/A -556

BS555 AFLAS-83

N/A
187064

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 5.97 in151.64 mm

N/A 0.003 in0.08 mm

N/A -555

BS554 AFLAS-83

N/A
187065

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 5.84 in148.46 mm

N/A 0.003 in0.08 mm

N/A -554

BS553 AFLAS-83

N/A
187066

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 5.72 in145.29 mm

N/A 0.003 in0.08 mm

N/A -553

BS552 AFLAS-83

N/A
187067

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 5.59 in142.11 mm

N/A 0.003 in0.08 mm

N/A -552

BS551 AFLAS-83

N/A
187068

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 5.47 in138.94 mm

N/A 0.003 in0.08 mm

N/A -551

BS550 AFLAS-83

N/A
187069

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 5.34 in135.76 mm

N/A 0.003 in0.08 mm

N/A -550

BS548 AFLAS-83

N/A
187070

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 5.09 in129.41 mm

N/A 0.003 in0.08 mm

N/A -548

BS546 AFLAS-83

N/A
187071

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 4.86 in123.44 mm

N/A 0.003 in0.08 mm

N/A -546

BS544 AFLAS-83

N/A
187072

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 4.61 in117.09 mm

N/A 0.003 in0.08 mm

N/A -544

BS542 AFLAS-83

N/A
187073

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 4.36 in110.74 mm

N/A 0.003 in0.08 mm

N/A -542

BS540 AFLAS-83

N/A
187074

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 4.11 in104.39 mm

N/A 0.003 in0.08 mm

N/A -540

BS538 AFLAS-83

N/A
187075

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 3.86 in98.04 mm

N/A 0.003 in0.08 mm

N/A -538

BS536 AFLAS-83

N/A
187076

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 3.61 in91.69 mm

N/A 0.003 in0.08 mm

N/A -536

BS534 AFLAS-83

N/A
187077

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 3.36 in85.34 mm

N/A 0.003 in0.08 mm

N/A -534

BS532 AFLAS-83

N/A
187078

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 3.11 in78.99 mm

N/A 0.003 in0.08 mm

N/A -532

BS519 AFLAS-83

N/A
187079

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 1.55 in39.45 mm

N/A 0.003 in0.08 mm

N/A -519

BS517 AFLAS-83

N/A
187080

N/A BS Standard O-Ring

N/A Aflas

N/A 0.070 in1.78 mm

N/A 83

N/A 1.43 in36.27 mm

N/A 0.003 in0.08 mm

N/A -517

BS475 AFLAS-83

N/A
187081

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 25.94 in658.88 mm

N/A 0.006 in0.15 mm

N/A -475

BS474 AFLAS-83

N/A
187082

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 24.94 in633.48 mm

N/A 0.006 in0.15 mm

N/A -474