ConTec CS-620C


ConTec CS-620C sealer is an concentrated aqueous fine particle dispersion of acrylic polymer. It is designed to give all concrete masonry units tough, water-resistant properties. ConTec CS-620C is proven effective on porous concrete masonry surfaces. It can be applied in the field or on the dry side of the production line. ConTec CS-620C can be tinted using approved pigments.


Dilute before using. Stir well. Spray systems should be airless type. There is no need to over apply. Only one coat is required. Apply only when substrate and ambient temperatures are above 64 degrees F. Maintain temp for 3 hours or until completely dry.


ConTec CS-620C is available in bulk quantities or packaged in 55 gallon (208 L) drums weighing 480 lbs (218 kg) and 265 gallon (1003 L) totes weighing 2400 lbs (1089 kg).


Specific Gravity at 77F…….…… ….. 1.00 – 1.02
Viscosity at 77F, cps ………… …..…. 100 max
Weight per gallon ……………………. ….8.4 – 8.5
% Volatile matter (NVM(1)) ….………… …… ~ 55
VOCs (lbs/gallon) ……..012 lb/gal or 2.9 lb/ton


● Deep penetrating.
● Concentrate saves freight.
● Non yellowing.
● Fast Drying – Reduces Blocking.
● Improves durability and chemical resistance.
● Reduces efflorescence on concrete products.
● Extremely blush resistant.


ConTec CS-620C can be stored over a wide range of temperatures but should not be allowed to freeze. Should ConTec CS-620C freeze, it will not thaw to a usable product. Provide adequate ventilation with use. Store as concentrate in original sealer container until just before usage.


Dilute to appropriate solids level before using. 20% final solids is common but solids from 10% to 33% can be used. Add potable water and mix well.

Application rates can vary, depending on surface, from 100 to 420 square feet per gallon. Optimum coverage rates vary with geographic area. Always consult your ICT technical representative for recommendations for your application.


Call and ask for technical assistance at 908-453-2737 or email

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