In oil and gas extraction, FFKM O-rings seal downhole tools against H2S, CO2, and drilling muds at depths exceeding 10,000 feet. Their resistance to sour gas prevents sulfide stress cracking, a common FKM issue. Seals maintain performance under 5,000 psi and 200°C, extending tool life. Subsea applications use FFKM for blowout preventers, resisting seawater corrosion. This reliability ... https://globalsealstech.com/ffkm-seals/