FOSROC Primer 7 is a high-performance, fast-drying primer designed for porous and prepared concrete joints before applying Thioflex 600 Pouring Grade or Gun Grade polysulphide sealants. Ideal for civil, commercial, and industrial sealing work. For joints exposed to long-term moisture or immersion, Primer 13 is recommended.
 
Key Features
Fast-drying formulation: Enables quicker progression of sealant work
Single-component system: No mixing required for easy application
Excellent substrate penetration: Optimised for porous concrete surfaces
Enhanced adhesion performance: Improves bonding of Thioflex 600 sealants
Low-viscosity solvent-based design: Ensures smooth and consistent priming

Technical Properties
Appearance: Amber clear liquid
VOC Content: 728 g/L
Touch Dry Time: Approx. 30 minutes at 23°C
Suitable Substrates: Porous concrete and prepared joint edges
 
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