DOWSIL™ 1200 OS Primer is a professional moisture-curing primer designed to improve silicone sealant adhesion and accelerate adhesion build-up on various substrates.
The product is supplied as a low-viscosity siloxane solution and is used in sealing, façade and structural glazing applications where controlled surface preparation is required before silicone sealant application.
Technical information
Product: DOWSIL™ 1200 OS Primer
Type: primer for silicone sealants and adhesives
Application: adhesion improvement on various substrates
Appearance: colourless liquid
Viscosity at 23 °C: 1 mPa·s
Flash point: 27 °C
VOC content: 76 g/l
Specific gravity at 23 °C: 0.84
Usable life: 18 months
Important to know
DOWSIL™ 1200 OS Primer is used as a surface preparation solution before silicone sealant application where reliable adhesion to the specific substrate is important. Primer, substrate and sealant compatibility should be evaluated before use.
The product must be used according to the manufacturer’s recommendations. Before use, always review the SDS, product label and TDS information.
Need help selecting the right primer?
Glasspro represents the DOW product portfolio and can help select the right primer, sealant and surface preparation solution according to the substrate, joint type and project conditions.
Technical documentation
Download the product TDS / SDS documents for technical and safety information.
Inquiry
For pricing, product availability, packaging, technical documentation and B2B supply across the EU and other export markets, please contact us.

