PRODUCT NUMBER

PRODUCT NAME

20-43

CLEAR CONCRETE SEALER

GENERAL DESCRIPTION

Pruett-Schaffer’s #20-43 Clear Concrete Sealer is a VOC compliant, water based acrylic emulsion paint. It is designed as a gloss, spray applied, fast drying concrete sealer. The self-cross-linking acrylic provides protection from water, salt and petroleum products. The cured film exhibits very good salt, and chemical resistance. This coating provides a .5-1.5 mil thick dry film that can be applied in one economical coat when used as supplied.

RECOMMENDED USES

This product is recommended for use on clean concrete. It exhibits exceptional adhesion to a wide variety of substrates including minimally prepared cold rolled steel, galvanized steel, existing coatings, masonry, and even aluminum without pretreatment. Not recommended for immersion service or for areas subject to continual solvent splash.

SURFACE PREPARATION

Chalky or dusty surfaces should be power washed and allowed to dry completely.

THINNING

Under normal conditions no thinning is necessary or desirable.

APPLICATION EQUIPMENT

May be applied by flow coat, brush, roller, or spray. Spray is the preferred method of application. Use roller covers with ³/₈ to ¹/₄ - inch nap. Brushes should be of polyester or nylon construction. This product may e used with a cup type

spray gun. One coat is recommended for most applications. Very porous or cracked areas may be pre-coated.

Caution: Multiple coats may result in a smooth surface that might be slippery when wet.

DRYING TIME

Dries to recoat in 20 to 30 minutes at 77 ^F and 50% Relative Humidity. High humidity will prolong dry time more so than low temperatures. To speed the dry time good air movement over the work and local exhaust is recommended. Heat lamps may be suitable for use but care must be exercised in heating too quickly, this may tend to trap solvent within the paint film causing water sensitivity.

CLEANUP

Clean equipment with warm soap and water before the film dries.

ENVIRONMENTAL

This product meets current air pollution regulations regarding hydrocarbon and ozone reactive emissions. It contains no lead or chromate.

PHYSICAL PARAMETERS

VOC, ASTM D-3960: 0.99 Lb/gal

WEIGHT PER GALLON, ASTM D-1475:

8.638 lbs.

NONVOLATILE:

By weight: 37.4 +/- 2.0 %

By volume: 38.61+/- 1.0%

THEORETICAL COVERAGE:

619 ft²/gallon/mil

INITIAL GLOSS, 60^, ASTM D-512:

NA

VISCOSITY, ASTM D-4212: 20-30 sec # 2 Zahn

FLASH POINT, PENSKY-MARTINS CC:

Over 140 deg F

TEST DATA

Non yellowing @ 140⁰ F 30 minute bake

Chemical Resistance: *

Softness/Appearance

Water 10/10

10%NaOH 10/ 9

409 Cleaner 10/10

Brake Fluid 3/9

70% IPA (Alcohol) 10/10

Gasoline 10/10

(*after one hour recovery)

SCALE: 0=failure 10=no change

Changes recovered to 10 when film was allowed to dry.

WATER RESISTANCE:

24 hours No effect

1 week No effect

THIS INFORMATION RESULTS FROM TESTS CONDUCTED IN A LABORATORY UNDER LABORATORY CONDITIONS. DIFFERENT RESULTS MAY BE OBTAINED IN COMMERCIAL USE OF THIS PRODUCT UNDER FACTORY OR FIELD CONDITIONS. PRUETT-SCHAFFER MAKES NO WARRANTY CONCERNING THE SUITABILITY OF THIS PRODUCT FOR THE END USE CONTEMPLATED BY THE BUYER, EXCEPT THAT THE PRODUCT SHALL BE IN COMPLIANCE WITH THE TECHNICAL SPECIFICATIONS PRESENTED HEREIN.