FEPM AFLAS®

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Copolymer of Tetrafluoroethylene, Fluoroelastomer
80A
Black
-10°C (14°F) to 220°C (428°F)
80±5
150 (min)
1450 (min) psi
Peroxide
M3HK910 A1-10 B37 B38

AFLAS® (fluoroelastomer, FEPM/TFE-P) is AGC's premium copolymer of tetrafluoroethylene and propylene (originally developed by Asahi Glass Co., Japan, in the 1970s), delivering superior resistance to strong acids, bases, amines, steam/hot water, sour gas (H₂S), polar solvents, and many aggressive chemicals, with excellent heat stability up to 230°C continuous (peaks to 250°C). AFLAS O-rings excel in extreme applications across oil & gas (downhole, H₂S environments), chemical processing, automotive (engine oils with amines), power generation, semiconductor, and food processing—often outperforming standard FKM/Viton in base- and steam-exposed seals. Additional benefits include outstanding electrical insulation, low gas permeability, and strong ozone/UV/weather resistance. Typically black with low compression set, they ensure durable, reliable performance in the harshest conditions.