Silicone Solventless Heat Cure Conformal Coatings

Product description

DOW Silicones (formerly Dow Corning) delivers a wide variety of silicone-based polymers for diverse solutions in electric, electronic and energy applications. DOWSIL™ and SYLGARD™ conformal coatings are materials applied in thin layers (typically a few mils or microns) onto printed circuits or other electronic substrates. They provide environmental and mechanical protection to significantly extend the life of the components and circuitry. DOWSIL™ and SYLGARD™ conformal coatings are traditionally applied by dipping, spraying, brushing or simple flow coating and increasingly by select coating, or robotic dispensing.

Silicone conformal coatings protect electronic printed circuit boards from moisture and contaminants, preventing short circuits and corrosion of conductors and solder joints. They also minimise dendritic growth and the electromigration of metal between conductors. In addition, the use of conformal coatings protects circuits and components from abrasion and solvents. Stress relief is also provided, as is protection of the insulation resistance of the circuit board.

DOWSIL™ and SYLGARD™ solventless heat cure conformal coatings are designed for rapid processing at elevated temperatures (above 100 °C). They require some heat to cure, offering long usable life at room temperature. As elastomers, these products offer optimum stress relief for components and interconnections in a variety of service environments.

Product Viscosity [mPas] Hardness [Sh00] Cure time [min] 
DOWSIL™ 1-4105 Conformal Coating 450 65 10 @105 °C 
DOWSIL™ CC-4555 Long Bath Life Conformal Coating 255 78 20 @120°C 
DOWSIL™ Q1-4010 Conformal Coating 825 33 ShA 10 @100 °C 
SYLGARD™ 1-4128 Conformal Coating 470 65 5 @105 °C 



Country availability

Austria Bosnia and Herzegovina
Bulgaria Croatia
Czech Republic Estonia
Germany Hungary
Latvia Lithuania
Macedonia Montenegro
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Romania Serbia
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Switzerland Turkey
Eray Berberoğlu

Contact person

Eray Berberoğlu

Product Manager

email   phone

Further information


Electronics Portfolio
pdf (3.2 MB)


Innovative Silicone Conformal Coatings
pdf (718.7 KB)