Smooth-On URE-FIL™ fillers disperse easily in Smooth-On materials. They can be added to materials in different proportions to achieve a variety of working properties and effects. Some fillers are designed for cost-savings, others are designed for specific casting effects or improved physical properties. Other URE-FIL™ fillers are designed specifically for thickening materials for brush-on or trowelable application.
URE-FIL™ 9 - fumed-silica based thickening agent primarily used with liquid polyurethane and silicone rubbers for brush-on moldmaking applications. URE-FIL™ 9 is added in small amounts to the mixed rubber until the desired viscosity is achieved. URE-FIL™ 9 can also be added to liquid polyurethane resins to create casting effects and to thicken the material for trowelable casting applications.
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