Hi-Sil®915

Highly reinforcing filler for elastomers (organic and silicone); low Na2 SO4 - associated with low water swell in silicone; small gross particle size for silicone incorporation; yields high initial compound viscosity, but with less effect on durometer than Hi-Sil 132; displays initial viscosity build without generating excessive crepe hardening, which is normally associated with fumed silica.