FFKM O-rings, perfluoroelastomer seals, offer the highest chemical and thermal resistance available. With near-universal compatibility, they resist over 1,800 chemicals, including acids, amines, steam, and plasma. Operating continuously from −45°C to +330°C (some grades +345°C), FFKM outperforms FKM, FEPM, and PTFE in semiconductor, CPI, and aerospace applications where failure is not... https://globalsealstech.com/ffkm-seals/