DOWSIL™ 1200 OS Primer is a professional primer designed to improve adhesion of silicone sealants and adhesives to various substrates. The product helps create more uniform and stronger bonds, making it suitable for weathersealing, façade and structural glazing applications.
Main information:
Manufacturer: DOW / DOWSIL™
Product type: primer for silicone sealants
Application: adhesion improvement on various substrates
Use: weathersealing / structural glazing
Colour: colourless
Documents: TDS / SDS
Key benefits
• Improves adhesion of silicone sealants to many substrates.
• Helps create more uniform and stronger bonds.
• Suitable for weathersealing and structural glazing applications.
• Low VOC formulation – 76 g/l.
• OS technology: the solvent used does not deplete the ozone layer.
Applications
• Priming for silicone sealants and adhesives.
• Façade and glazing system weathersealing.
• Structural glazing applications.
• Surface preparation before silicone sealant application.
• Professional production and installation processes.
Technical information
Colour: colourless
Viscosity at 23 °C: 1 mPa·s
Flash point: 27 °C
VOC: 76 g/l
Specific gravity at 23 °C: 0.84
Usable life: 18 months
Important to know
Before applying the primer, the surface must be clean, degreased and dry. Apply a thin coat with a clean white rag or brush. Under normal conditions, allow the primer to air dry for 15–90 minutes. Drying times of more than 6 hours at normal temperature and humidity should be avoided. Store in the original tightly sealed container at or below 25 °C. This material must be stored in a warehouse suitable for flammable materials.
Before use, read the SDS, product label and manufacturer’s recommendations.
Need a primer for improved silicone sealant adhesion?
Glasspro represents DOW and can help select the right primer for weathersealing, façade and structural glazing systems.
Inquiry
For pricing, product availability, technical documentation and B2B supply options in your market, please contact us.
Technical documentation
Download the product TDS / PDF for detailed technical information.