Hydrophilic fumed silica Characteristics HMFSIL-150 is a hydrophilic fumed silica with a specific surface area of 150 m²/g. Applications ¦Sealants ¦Adhesives ¦RTV-1K-silicone sealants ¦HTV-silicone rubber Properties ¦High transparency ¦Improved reinforcing properties of HTV-silicone rubber. ¦Improved reinforcing properties and thixotropy of room temperature vulcanizing silicone sealants. Packaging and Storage HMFSIL- 150 is supplied in multiple layer 10 kg bags. We recommend to store the product in closed containers under dry conditions and to protect the material from volatile substances. HMFSIL-150 should be used within 2 years after production.