Cab-o-sil TS-720 Fumed silica Cabot Rheology Modifiers / Thickeners >> Mineral >> Fumed Silica Epoxy (EP) Rubber - Elastomer (Chloroprene, Butyl …) Silicones (Si) ADHESIVE SEALANT CAB-O-SIL® TS-720 treated fumed silica is a high-purity silica which has been treated with a dimethyl silicone fluid. The treatment replaces many of the surface hydroxyl groups on the fumed silica with a polydimethylsiloxane polymer. This treatment makes the silica extremely hydrophobic. The unique properties of CAB-O-SIL TS-720 treated fumed silica offer special benefits in many applications: The low moisture content of TS-720 (typically 0.2 wt. %) makes it usable without expensive drying when incorporated in moisture sensitive systems. Is an excellent thixotrope for coatings, provides sag resistance, anti-settling, rheology control and superior water resistance. Is a very efficient thixotrope for epoxy resins. It offers a stable sag resistance, even in high temperature cure systems, without loss of other properties such as cure rate, extrusion rate, or lap shear tensile strength. Is an excellent thickener for greases and imparts the following attractive properties: water resistance, extremely high dropping point, and no significant loss of lubricating properties on longterm exposure to heat. Can dramatically improve and retain the desired free flow properties of powders stored or exposed for long periods of time. In high consistency (heat cured) silicone rubber formulations, TS-720 reduces “crepe” hardening, imparts excellent fresh and aged processing properties, and eliminates the need to use expensive processing aids, saving material costs and improving compounding flexibility. Hydrophobic fumed silica treated with a dimethyl silicone fluid. Used as a rheology control agent, a free flow agent, a thickener and a thixotrope.