January 23, 2017

High Chemical Resistance Epoxy Coating Product #633W

Introducing highly chemically resistant Novolac epoxy wall coating.  Bring your chemical resistance to new heights. Apply this Novolac Epoxy Wall Coating on walls in thicker coats, with less runs.  Same great chemical resistant Novolac Epoxy as Product #633, but thicker.

Description Product #633W is a 100% solids epoxy novolac coating ideal for harsh chemical and solvent environments. “W” designates High Viscosity formulation for improved film build on vertical surfaces. Epoxy #633W can be used as a seal coat for various products and systems where extreme chemical resistant performance is required, such as secondary containment, solvent storage, pump pads, trenches, chemical process areas, and other high exposure areas.

Epoxy Novolac Wall Coating is 100% solids, modified amine adduct cured epoxy novolac (novolac epoxy) resin.


  • Exhibits excellent resistance to strong acids, alkalis, and most industrial chemicals and solvents.
  • Can be applied in occupied facilities.
  • Can be applied in cool damp conditions.
  • Can be rapidly re-coated in ambient conditions.


Good surface preparation is one of the most important parts of the installation of a high end coating. Be sure to follow our
Surface Preparation Guide before installing this product.


  1. Review and follow epoxy installation tips
  2. Properly prepare the substrate.
  3. Mix small batches of the material with 2 parts “A” and one part “B”, being sure to completely mix for 3 min. Mix only what you can use in half the potlife. Remember the bigger the batch the faster it will setup in your bucket
  4. Installation methods will vary from job to job. Typical application is by brush and quality roller.
  5. Contact Technical Support with any questions that you have.

Physical Properties

Color See Color Chart
Gloss, 60°F 100
Solids Contentr 100%
Mix Ratio 2A to 1B by Volume
Pot Life 20 min @ 75°F
VOC 0.0

Dry Time

Foot Traffic @ 75°F 10-12 hours
Recoat #75&deg:F 4 hours minimum, 16 hours maximum
Exposures to Chemicals @ 75°F 5 days

Chemical Resistance



Acetic Acid 30% R
Acetone L
Methylene Chloride L
Crude Oil R
Diesel Fuel R
Ethylene Glycol R
Fatty Acids R
Gasoline R
Metyl Ethyl Ketone L
Hydrochloric Acid- 36% R
Urea R
Bleach R
Citric Acid R
Skydrol R
Sodium Hydroxide – 50% R
Sulfuric Acid – 98% R
Toluene R
Lactic Acid R
Nitric Acid 20% R
Xylene R
R = Recommended for Intermittent Immersion

L = Limited recommendation, occasional spills

Performance Properties

Tensile Strength ASTM-D-638 10,400 psi
Adhesion to concrete ACI Committee 403 300-440+ psi (100% concrete
Hardness ASTM-D-2240 86 Shore D
Abrasion Resistance ASTM-C-501 (CS-17 Wheel) 30 mg loss
Service Temperature MIL-D-3134F 180°F – 325&deg:F (Dry Heat)
Elongation 2.5%

For more information visit our website at, email us at or call technical support at: 352-533-2167.

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