EVONIK CORPORATION › AEROSIL® R 805 AEROSIL® R 805 $0.00 AEROSIL® R 805 is a fumed silica after treated with organo-silane. It provides utmost transparency. Add To Cart Added! AEROSIL® R 805 is a fumed silica after treated with organo-silane. It provides utmost transparency. You Might Also Like AEROSIL® 150 AEROSIL® 200 AEROSIL® R 711 AEROSIL® R 7200 AEROSIL® TT 600