ConTec CS-620


ConTec CS-620 sealer is an aqueous fine particle dispersion of acrylic polymer. It is designed to give all concrete masonry units tough, water-resistant properties. ConTec CS-620 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-620 can be tinted using approved pigments.


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-620 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 – 1.03
Viscosity at 77F, cps ………… …. …..…. < 400
Weight per gallon ………………… ….8.7 – 8.75
% Volatile matter (NVM(1)) ………… …… ~ 50
VOCs (lbs/gallon) ….……0.0 lb/gal or 0.0 lb/ton


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


ConTec CS-620 can be stored over a wide range of temperatures but should not be allowed to freeze. Should ConTec CS-620 freeze, it will not thaw to a usable product. Provide adequate ventilation with use.

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

MSDS CS620-15

Call and ask for technical assistance at 908-453-2737 or email info@bestadmix.com.

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