Dow Corning 3099 HVIC has been undergoing trials as a replacement for Dow Corning 5 at Rain Calcining Limited since 2004. Despite layers of contamination from dust and other pollutants, Dow Corning 5 has proven effective at preventing flashovers, with an average life of 18 months before recoating. Dow Corning 3099 is expected to last over 36 months with one application, preventing tracking and flashovers even with surface contamination rendered hydrophobic. The document promotes Dow Corning 3099 for its unique fillers that suppress arcs and resist UV degradation, allowing easy visual inspection during application.