ULTRASIL® 880 is a precipitated silica with a Calcium admixture and a very low specific BET surface area of approximately 35 m2/g.

Scope of Application

ULTRASIL® 880 has medium reinforcing potential. It imparts excellent compression set and extrusion properties to rubber compounds. ULTRASIL® 880 thus allows the production of profiles with low die swell and very smooth surfaces. Even EPDM compounds with extremely high filler loading can still easily be processed. In white compounds ULTRASIL® 880 can be used as a partial replacement for titanium dioxide. Sulfur cure is only marginally affected. Application fields are: Mechanical rubber goods.