Addition Cure Silicone Rubber Formulation Guide

		Vinyl Silicone Fluids		Inhibitor (Vinyl Chainstoppers)
		Vinyl Silicone Resins		Modifier / Hydride Chain Extenders
		Hydride Crosslinkers		Reinforcer: Hydrophilic Fumed Silica
		Adhesion Promoters		Silazanes
		Platium Catalyst		Water Scavengers

Reinforcer: Hydrophilic Fumed Silica

Fillers are generally employed with both one and two component RTV silicone formulations. The fillers are used to provide improved properties (application and physical). High surface area fumed silica are most commonly used to provide reinforcing characteristics. Fumed silica will also provide thixotropy that is necessary in many sealant applications.

SiSiB® Grades	BET surface area [m2/g]	Loss on drying [wt.%]	pH value
SiSiB® FS0150	150 +/- 15	Max. 1.0%	3.6-4.3
SiSiB® FS0200	200 +/- 15	Max. 2.0%	3.6-4.3