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. Quantity: 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® 200 F AEROSIL® 200 HV AEROSIL® R 816 AEROSIL® R 974 AEROSIL® 300 V