DOWSIL™ Primer-C is a solvent-based silane adhesion promoter designed to improve sealant adhesion to painted surfaces in curtain wall applications.
The product is used for accelerated adhesion of DOWSIL™ 983, DOWSIL™ 993 and DOWSIL™ 993N Structural Glazing Sealant to PVF2 / Kynar-based paints. The primer is nonstaining, moisture-curing and can help promote faster adhesion in low-temperature and low-humidity conditions.
Important to know
DOWSIL™ Primer-C is an extremely flammable product. Before use, always review the SDS, product label and manufacturer’s recommendations. The product may dissolve EPS insulation boards used in EIFS systems; excessive application on such substrates may affect substrate integrity. Expired primer turns milky white.
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 / PDF for detailed technical information.
📩 Inquiry
For pricing, product availability, packaging, technical documentation and B2B supply across the EU and other export markets, please contact us.

