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
BS448 AFLAS-83	N/A 187108	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 9.48 in240.67 mm	N/A 0.006 in0.15 mm	N/A -448
BS447 AFLAS-83	N/A 187109	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 8.98 in227.97 mm	N/A 0.006 in0.15 mm	N/A -447
BS446 AFLAS-83	N/A 187110	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 8.48 in215.27 mm	N/A 0.006 in0.15 mm	N/A -446
BS445 AFLAS-83	N/A 187111	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 7.98 in202.57 mm	N/A 0.006 in0.15 mm	N/A -445
BS444 AFLAS-83	N/A 187112	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 7.73 in196.22 mm	N/A 0.006 in0.15 mm	N/A -444
BS443 AFLAS-83	N/A 187113	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 7.48 in189.87 mm	N/A 0.006 in0.15 mm	N/A -443
BS442 AFLAS-83	N/A 187114	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 7.23 in183.52 mm	N/A 0.006 in0.15 mm	N/A -442
BS441 AFLAS-83	N/A 187115	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 6.98 in177.17 mm	N/A 0.006 in0.15 mm	N/A -441
BS440 AFLAS-83	N/A 187116	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 6.73 in170.82 mm	N/A 0.006 in0.15 mm	N/A -440
BS439 AFLAS-83	N/A 187117	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 6.48 in164.47 mm	N/A 0.006 in0.15 mm	N/A -439
BS438 AFLAS-83	N/A 187118	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 6.23 in158.12 mm	N/A 0.006 in0.15 mm	N/A -438
BS437 AFLAS-83	N/A 187119	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 5.98 in151.77 mm	N/A 0.006 in0.15 mm	N/A -437
BS436 AFLAS-83	N/A 187120	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 5.85 in148.59 mm	N/A 0.006 in0.15 mm	N/A -436
BS435 AFLAS-83	N/A 187121	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 5.73 in145.42 mm	N/A 0.006 in0.15 mm	N/A -435
BS434 AFLAS-83	N/A 187122	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 5.60 in142.24 mm	N/A 0.006 in0.15 mm	N/A -434
BS433 AFLAS-83	N/A 187123	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 5.48 in139.07 mm	N/A 0.006 in0.15 mm	N/A -433
BS432 AFLAS-83	N/A 187124	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 5.35 in135.89 mm	N/A 0.006 in0.15 mm	N/A -432
BS431 AFLAS-83	N/A 187125	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 5.23 in132.72 mm	N/A 0.006 in0.15 mm	N/A -431
BS430 AFLAS-83	N/A 187126	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 5.10 in129.54 mm	N/A 0.006 in0.15 mm	N/A -430
BS429 AFLAS-83	N/A 187127	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 4.98 in126.37 mm	N/A 0.006 in0.15 mm	N/A -429
BS428 AFLAS-83	N/A 187128	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 4.85 in123.19 mm	N/A 0.006 in0.15 mm	N/A -428
BS427 AFLAS-83	N/A 187129	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 4.73 in120.02 mm	N/A 0.006 in0.15 mm	N/A -427
BS426 AFLAS-83	N/A 187130	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 4.60 in116.84 mm	N/A 0.006 in0.15 mm	N/A -426
BS425 AFLAS-83	N/A 187131	N/A BS Standard O-Ring	N/A Aflas	N/A 0.275 in6.99 mm	N/A 83	N/A 4.48 in113.67 mm	N/A 0.006 in0.15 mm	N/A -425
BS395 AFLAS-83	N/A 187132	N/A BS Standard O-Ring	N/A Aflas	N/A 0.210 in5.33 mm	N/A 83	N/A 25.94 in658.88 mm	N/A 0.005 in0.13 mm	N/A -395

N/A
187108

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 9.48 in240.67 mm

N/A 0.006 in0.15 mm

N/A -448

BS447 AFLAS-83

N/A
187109

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 8.98 in227.97 mm

N/A 0.006 in0.15 mm

N/A -447

BS446 AFLAS-83

N/A
187110

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 8.48 in215.27 mm

N/A 0.006 in0.15 mm

N/A -446

BS445 AFLAS-83

N/A
187111

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 7.98 in202.57 mm

N/A 0.006 in0.15 mm

N/A -445

BS444 AFLAS-83

N/A
187112

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 7.73 in196.22 mm

N/A 0.006 in0.15 mm

N/A -444

BS443 AFLAS-83

N/A
187113

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 7.48 in189.87 mm

N/A 0.006 in0.15 mm

N/A -443

BS442 AFLAS-83

N/A
187114

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 7.23 in183.52 mm

N/A 0.006 in0.15 mm

N/A -442

BS441 AFLAS-83

N/A
187115

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 6.98 in177.17 mm

N/A 0.006 in0.15 mm

N/A -441

BS440 AFLAS-83

N/A
187116

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 6.73 in170.82 mm

N/A 0.006 in0.15 mm

N/A -440

BS439 AFLAS-83

N/A
187117

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 6.48 in164.47 mm

N/A 0.006 in0.15 mm

N/A -439

BS438 AFLAS-83

N/A
187118

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 6.23 in158.12 mm

N/A 0.006 in0.15 mm

N/A -438

BS437 AFLAS-83

N/A
187119

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 5.98 in151.77 mm

N/A 0.006 in0.15 mm

N/A -437

BS436 AFLAS-83

N/A
187120

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 5.85 in148.59 mm

N/A 0.006 in0.15 mm

N/A -436

BS435 AFLAS-83

N/A
187121

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 5.73 in145.42 mm

N/A 0.006 in0.15 mm

N/A -435

BS434 AFLAS-83

N/A
187122

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 5.60 in142.24 mm

N/A 0.006 in0.15 mm

N/A -434

BS433 AFLAS-83

N/A
187123

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 5.48 in139.07 mm

N/A 0.006 in0.15 mm

N/A -433

BS432 AFLAS-83

N/A
187124

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 5.35 in135.89 mm

N/A 0.006 in0.15 mm

N/A -432

BS431 AFLAS-83

N/A
187125

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 5.23 in132.72 mm

N/A 0.006 in0.15 mm

N/A -431

BS430 AFLAS-83

N/A
187126

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 5.10 in129.54 mm

N/A 0.006 in0.15 mm

N/A -430

BS429 AFLAS-83

N/A
187127

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 4.98 in126.37 mm

N/A 0.006 in0.15 mm

N/A -429

BS428 AFLAS-83

N/A
187128

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 4.85 in123.19 mm

N/A 0.006 in0.15 mm

N/A -428

BS427 AFLAS-83

N/A
187129

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 4.73 in120.02 mm

N/A 0.006 in0.15 mm

N/A -427

BS426 AFLAS-83

N/A
187130

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 4.60 in116.84 mm

N/A 0.006 in0.15 mm

N/A -426

BS425 AFLAS-83

N/A
187131

N/A BS Standard O-Ring

N/A Aflas

N/A 0.275 in6.99 mm

N/A 83

N/A 4.48 in113.67 mm

N/A 0.006 in0.15 mm

N/A -425

BS395 AFLAS-83

N/A
187132

N/A BS Standard O-Ring

N/A Aflas

N/A 0.210 in5.33 mm

N/A 83

N/A 25.94 in658.88 mm

N/A 0.005 in0.13 mm

N/A -395