EVONIK CORPORATION › AEROSIL® 300 V AEROSIL® 300 V $0.00 AEROSIL® 300 V acts as a rheology modifier. It exhibits optimal dispersion yielding best results in pronounced thickening and thixotropy. Add To Cart Added! AEROSIL® 300 V acts as a rheology modifier. It exhibits optimal dispersion yielding best results in pronounced thickening and thixotropy. You Might Also Like AEROSIL® 200 F AEROSIL® 380 AEROSIL® RA 200 HS AEROSIL® 200 VS AEROSIL® R 816