Built for practical production needs
CAB-O-SIL M-5 is a hydrophilic fumed silica widely used to increase viscosity and provide thixotropic behavior. In composites, typical uses include resins, gel coats, adhesives and formulations requiring flow control.
Key points
- Hydrophilic untreated fumed silica
- Viscosity and rheology control
- Supports thixotropic behavior
- Anti-settling support
- Resin, gel coat and adhesive applications
- Proper dispersion is important
Specifications and use procedures should be checked against the current TDS/SDS and validated under actual production conditions before full implementation.
Application information
Hydrophilic untreated fumed silica
Modifies rheology, controls sag and supports stability in resin, gelcoat, adhesive and coating systems.
Dosage and dispersion must be validated in the actual resin; control airborne dust and PPE according to the SDS.

