Halocarbon 25-5S grease is a thicker bodied, moderate viscosity PCTFE oil thickened with silica designed for applications over a broad range of temperatures. This inert oil is manufactured by a controlled polymerization process and then is stabilized to give it some very unique properties. This oil is safe, chemically inert, nonflammable, and is oxygen and chlorine compatible. It has good lubricity, high thermal stability, and low compressibility.
The thickener used in this grease is a very fine silica powder. Silica is a commonly requested grease thickener, but its chemical stability is more limited than the PCTFE oil. Silica-thickened greases can be prone to attack by chemicals active toward silica, such as alkalis, hydrofluoric acid, and fluorinating agents. Compatibility of silica-thickened greases should be confirmed before being used in applications in contact with these chemicals.
This grease is considered to be an all-purpose grease useful over a broad temperature range and often used in oxygen, chlorine, and other reactive gas service applications.