Prevent reactions from existing finishes with Kapci 620, an extraordinary and versatile transparent 2K acrylic sealer with excellent adhesion properties over non-sanded areas.

This 2K Transparent Sealer can be tinted with Kapcicrly 660 2K paints up to 10% by volume!


Kapci 620 transparent sealer is used as: 

  • Adhesion promoter sealer over non-sanded finishes
  • Non-sanding (wow) transparent sealer
  • Flattable isolator over sanded surfaces

As an adhesion promoter, Kapci 620 transparent sealer eliminates the requirement to sand substrates.


  • Mixing Ratio: 2:1+20%
  • Flash Off Time: 5 -10 minutes at 20ºC between coats
  • Adhesion promoter: 1 light coat with total dry film thickness 20 - 25 microns 
  • Air Dry: 20 - 30 minutes at 20ºC
  • Sealer / Isolator: 2 light coats with total dry film thickness 40 - 50 microns
  • Air dry: 24 hours at 20ºC


Ideal for use with Kapci 2K Hardeners 653 Extra Fast or 652 Fast and Kapci 2K Thinners 600 Normal or 600F Fast.

Product Data
Material Safety Data Sheet FLK620-MSDS.pdf
Technical Data Sheet FLK620-TDS.pdf

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Kapci 620 2K Transparent Sealer 1L

  • Brand: Kapci
  • Product Code: FLK620
  • Availability: In Stock