PETRELPLUS SYF-558 is a high-performance, fully synthetic perfluoropolyether (PFPE) vacuum pump fluid specially developed for high-vacuum and demanding industrial applications. It offers excellent thermal and chemical stability, extremely low vapour pressure, superior oxidation resistance and excellent compatibility with aggressive chemical environments. SYF-558 is particularly suitable for vacuum pumps and systems operating under severe conditions where conventional mineral and hydrocarbon-based vacuum oils may not provide adequate performance.