SIL500 is a 1-part silicon conformal coating with good adhesion on many substrates. It is a transparent elastomer and can be applied in high thickness deposit (100μm to a few mm). Fast curing at room temperature and without VOC. It can be applied by brushing or spraying. 

SIL500 protects your PCBs, especially against humidity and environmental contaminants. 



SIL500 can be sprayed or brushed. The thickness of the coating depends on the method of application.

SIL500 contains a UV trace which allows inspection of the PCB after coating to ensure complete and even coverage. The stonger the reflected light, the thicker the coating layer is.

Dispensing machine and spraying

SIL500 needs to be thinned with DVS before spraying. The optimum viscosity, to give coating quality and thickness, depends on the spray equipment and conditions but a starting point could be of 0.7 parts coating to 0.3 parts thinners. If the bulk coating material has been agitated, it should be allowed to stand until the air bubbles disperse. A higher dilution of SIL500 is not recommended because it can create some issues of curing and a tacky coating.

SIL500 can also be applied with a jetter

SIL500 is suitable for use in both manual spray guns or computer controlled airless spray equipment that only coats the required areas of the PCB, eliminating the need for masking. The nozzle of the spray gun should be selected to give an even spray to suit the prevailing viscosity of the coating material.

To ensure penetration of the coating beneath the components and in confined spaces, spray the assembly from all directions to give an even coating. 


Ensure that the coating material has been agitated thoroughly and has been allowed to settle for at least two hours. The coating should be kept at ambient temperature. Gently apply the coating with a good quality brush (silk) to avoid leaving brush marks and not to disturb the components and wiring.

Available packaging: in Bulk 1kg, Bulk 5kg, Bulk20g



  • Monocomponent conformal coating
  • Fast curing at room temperature
  • Protection against humid and thermal environments
  • Excellent adhesion on many substrates (PCB, plastics,…)
  • Fluorescent
  • No solvent
  • Cured until 5mm-thickness
  • Application by dispensing machine, spraying, brushing
SIL500 is compliance with REACH and RoHS regulations. If you want a certificate, please contact us




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