Hi Bond 702130 Cab-O-Sil Fumed Silica Thickening Agent - Gallon

Hi Bond 702130 Cab-O-Sil is a professional-grade fumed silica thickening agent designed for marine and fiberglass applications. This lightweight, fine powder additive transforms liquid resins and gel coats into non-sagging, workable pastes ideal for vertical surfaces and overhead applications.

Key Features:

• Fumed silica formula provides excellent thixotropic properties and viscosity control
• Prevents sagging and runoff on vertical and overhead surfaces
• Compatible with polyester resins, vinyl ester resins, epoxy systems, and gel coats
• Creates high-strength adhesive putties for bonding and filleting
• Gallon container provides sufficient quantity for multiple projects
• Can be mixed with other fillers such as milled fibers or glass microspheres for enhanced properties

Applications: Perfect for marine repairs, boat building, fiberglass lamination, and structural bonding. Mix approximately 1:1 ratio by volume with resin, adjusting as needed to achieve desired consistency. Add Cab-O-Sil after mixing resin with hardener or MEKP catalyst to ensure proper cure. Commonly used for creating non-drip gel coat applications, bonding finboxes and fittings, and filling gaps and voids in fiberglass structures.

Note: Adding fumed silica may increase sanding difficulty in cured applications. For easier sanding, combine with glass microspheres or other filleting compounds.