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Aeosil R 974 Hydrophilic Fumed Silica. Superior Hydrophobicity: Aftertreated with DDS to provide excellent water resistance and hydrophobicity. Excellent Rheology Control: Ideal for thickening, thixotropic effects, and anti-settling in complex liquid systems. High Purity Content: SiO2 content is at least 99.8% based on ignited material. Versatile Applications: Suitable for silicone rubber, sealants, paints, coatings, toner, adhesives, and cosmetics. Flexible Customization: Offers flexible customization options to meet specific customer requirements. Stable Shelf Life: Improves shelf-life of silicone sealants and maintains free flow of powders.