The FI series perfluoropolyether (PFPE) oils deliver exceptional lubricity, oxidation resistance, and thermal stability, coupled with extraordinary chemical inertness (non-reactive with oxygen), outstanding radiation resistance, high corrosion resistance, wear resistance, and extreme-pressure (EP) performance. They are engineered for lubrication under extreme conditions—ultra-high temperature, heavy load, strong chemical corrosion, and strong oxidation—where conventional hydrocarbon or ester-based lubricants fail to perform.