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  • Overview
  • Specs
  • Coverage Rate
  • Cure
  • Chemical
  • Application

NE253SL Novolac Epoxy Slurry Acid Chemical Resistant

Novolac Epoxy NE253SL is a two component high solids novolac epoxy slurry with exceptional resistance to a variety of chemicals, solvents and acids designed for application where splash and spills of acids, chemicals, and solvents occur.  Ability to contain high concentrations of acids and even some chlorinated solvents such as MEK and xylene.

Recommended for a high build resurfacing for traffic areas as well as resurfacing chemical spill areas.  Can be applied up to 1/16″ thick Long lasting with excellent adhesion and high build design for increased durability.

Quick back in-service with light foot traffic in only 10-18 hours. Novolac Epoxy 253SL recommended as a high build slurry for traffic areas, chemical troughs and curbs as well as tanks and chemical spill areas for cement masonry or brick.

Available in 1 quart kit, 1.5 gallon and 15 gallon kits and three colors: light gray, medium gray and tile red options.

PRIMER: Recommend the NE527P Novolac Epoxy Primer

TOPCOAT: None recommended.  Can apply multiple coats of NE253SL.

 Where is the NE253SL used?

  • Chemical process plants
  • Pulp and paper mills
  • Food processing
  • Gas processing
  • Power generation
  • Sewage and water treatment
  • Battery charging stations
  • Mining industry
  • Manufacturing plants
  • Chemical storage areas
  • Areas subject to chemical exposure
  • Warehouse loading dock areas
  • Concrete and brick surfaces subject to chemical spill and splash conditions

Why NE253SL Novolac Epoxy Slurry?

  • Outstanding Spill and Splash Acid, Solvent, Chemical surface protection
  • Resists wide range of chemicals, solvents and acids
  • Resistant to high concentrations of acids and even some chlorinated solvents
  • Applied at 1/16″ thick for resurfacing traffic and chemical spill areas
  • Excellent adhesion 425 psi
  • Quick back in-service with light foot traffic 10-18 hours
  • Selection of 3 color options
  • Low voc 47 g/L


Solids By Weight 96%   By Volume 94%
VOC 22 g/L
Colors light gray, medium gray, tile red
Recommended Film Thickness 1/16″ applied with special serrated squeegee
Coverage per Gallon A 1.5 gallon (liquid) kit will yield 65-85 square feet
Packaging 1.5 gallon kit (1 gallon Part A and 1/2 gallon Part B plus 15# aggregate) and 15 gallon kit
Mix Ratio (2:1 mix ratio) 1 gallons part A to .5 gallon part B
Shelf Life 1 year in unopened container
Finish Semi-Gloss (>40 at 60 degrees @Erichsen glossmeter)
Abrasion Resistance Taber abraser CS-17 calibrase wheel with 1000 gram total load and 500 cycles= 20 mg loss
Flexural strength 9,610 psi@ ASTM D790- 1/2″x1/2″ bars span 4″
Compressive strength 9,900 psi @ASTM D695
Tensile strength 6,680 psi @ ASTM D638
Ultimate Elongation 4.7%
Hardness D = 88
Gardner Variable Impactor 50 inch pounds direct – passed
Viscosity Mixed = 2200-2700 cps (typical)
Heat Deflection Temp 115.5 degrees F, ASTM D648


Coverage Per Gallon A 1.5 Gallon (Liquid) Kit Will Yield 65-85 Square Feet


Pot Life – (1-1/2 gallon volume) 25-35 minutes
Tack free (dry to touch) 5-7 hours
Recoat or topcoat 5 – 10 hours
Light foot traffic 10-18 hours
Full cure (heavy traffic) 2-7 days

APPLICATION TEMPERATURE: 60-95 degrees F with relative humidity below 90%


 Xylene D
 1.1.1 trichlorethane C
Ethyl Alcohol C
Skydrol C
 10% sodium hydroxide E
 50% sodium hydroxide E
 10% sulfuric E
 70% sulfuric acid C
10% HCI D
5% acetic acid D

Rating key: A – not recommended, B – 2 hour term splash spill, C – 8 hour term splash spill, D – 72 hour immersion, E – long term immersion.


PRODUCT STORAGE: Store product in an area so as to bring the material room temperature before using.  Continuous storage should be between 60 and 90 degree F.  Low temperatures or great temperature fluctuations may cause product crystallization.

SURFACE PREPARATION: The most suitable surface preparation would be a fine brush blast (shot blast) to remove all laitance and provide a suitable profile. All dirt, foreign contaminants, oil and laitance must be removed to assure a trouble free bond to the substrate. A test should be made to determine that the concrete is dry; this can be done by placing a 4’X4’ plastic sheet on the substrate and taping down the edges. If after 24 hours, the substrate is still dry below the plastic sheet, then the substrate is dry enough to start coating. The plastic sheet testing is also a good method to determine if any hydrostatic pressure problems exist that may later cause disbonding.

PRODUCT MIXING: Each1.5 gallon kit of this product has a mix ratio of 1 gallon Part A to .5 gallon B by volume plus 15# aggregate. Standard packages are in pre-measured kits and should be mixed as supplied in the kit.  Before the two components are mixed together, mix the part A and part B separately to insure they are uniform before they are combined.  After the two parts are combined, mix well with slow speed mixing equipment such as a jiffy mixer until the material is thoroughly mixed and streak free.  After the two liquid parts are combined, add in the provided aggregate and mix well with slow speed mixing equipment such as a jiffy mixer until the material is thoroughly mixed and again streak free.   After mixing, transfer the mixed material to another pail (the transfer pail) and again remix. The material in the transfer pail is now ready to be applied on the primed substrate. This material has a high viscosity – mix well.

Improper mixing may result in product failure. For best mixing results and proper blending of parts A and B, recommend a Jiffy Mixer style drill mixer. 4)

PRIMING:  A suitable primer should be used before applying this product.  If a primer is not used, more porous substrates may cause outgassing and possible surface defects.

PRODUCT APPLICATION: The mixed material can be applied by a serrated squeegee at the recommended thickness, then backroll the applied liquids with an air release roller if necessary.  Finally, back roll (very lightly) with a conventional roller tool.  Maintain temperatures and relative humidity within the recommended ranges during the application and curing process.

RECOAT OR TOPCOATING:  Recoats or topcoats of this product are normally unnecessary.  However, if you opt to recoat or topcoat this product, you must first be sure that the coating has tacked off and then the surface should be deglossed to insure a trouble free bond prior to application of recoats or topcoats.  Always remember that colder temperatures will require more cure time for the product before recoating or topcoating can commence.  Before recoating or topcoating, check the coating to insure no epoxy blushes were developed (a whitish, greasy film, or deglossing.)  If a blush is present, it can be removed by any standard detergent cleaner prior to topcoating or recoating.  Multiple coats of this product are acceptable and can be used to achieve greater chemical resistance and build.

CLEANUP: Use xylol.

FLOOR CLEANING: Caution!  Some cleaners may affect the color of the floor installed. Test each cleaner in a small area, utilizing your cleaning technique.  If no ill effects are noted, you can continue to clean with the product and process tested.

RESTRICTIONS: Restrict the use of the floor to light traffic and non-harsh chemicals until the coating is fully cured (see technical data under full cure).  It is best to let the floor remain dry for the full cure cycle. Dependent on actual complete system application, surface may be slippery, especially when wet or contaminated; keep surface clean and dry.


  • Color stability or gloss may be affected by environmental condtions such as high humidity, low temperature, or chemical exposure.
  • Colors may vary from batch to batch.  Therefore, use only product from the same batch for an entire job.
  • Apply a suitable primer before using this product.
  • This product is not UV color stable and exposure to lighting (sodium vapor) can cause discolorations.
  • Data based on neat resin without aggregate
  • Mixtures of chemicals and applications with exposures to chemicals at elevated temperatures should be thoroughly evaluated before applying.  A test patch is recommended.
  • Product can develop surface irregularities in leveling in combination to some chemical contamination or substrate compositions.
  • Substrate temperature must be 5°F above dew point.
  • All new concrete must be cured for at least 30 days prior to application.
  • Results of use are contingent upon proper application.  Test patches are recommended.
  • All new concrete must be cured for at least 30 days prior to application.
  • Physical properties are typical values and not specifications.

NOTICE TO BUYER: DISCLAIMER OF WARRANTIES AND LIMITATIONS ON OUR LIABILITY We warrant that our products are manufactured to strict quality assurance specifications and that the information supplied by us is accurate to the best of our knowledge. Such information supplied about our products is not a representation or a warranty. It is supplied on the condition that you shall make your own tests to determine the suitability of our product for your particular purpose. Any use or application other than recommended herein is the sole responsibility of the user. Listed physical properties are typical and should not be construed as specifications. NO WARRANTY IS MADE, EXPRESSED OR IMPLIED, REGARDING SUCH OTHER INFORMATION, THE DATA ON WHICH IT IS BASED, OR THE RESULTS YOU WILL OBTAIN FROM ITS USE. N0 WARRANTY IS MADE, EXPRESSED OR IMPLIED, THAT OUR PRODUCT SHALL BE MERCHANTABLE OR THAT OUR PRODUCT SHALL BE FIT FOR ANY PARTICULAR PURPOSE. NO WARRANTY IS MADE THAT THE USE OF SUCH INFORMATION OR OUR PRODUCT WILL NOT INFRINGE UPON ANY PATENT. We shall have no liability for incidental or consequential damages, direct or indirect. Our liability is limited to the net selling price of our product or the replacement of our product, at our option. Acceptance of delivery of our product means that you have accepted the terms of this warranty whether or not purchase orders or other documents state terms that vary from this warranty. No representative is authorized to make any representation or warranty or assume any other liability on our behalf with any sale of our products. Our products contain chemicals that may CAUSE SERIOUS PHYSICAL INJURY. BEFORE USING, READ THE SAFETY DATA SHEET AND FOLLOW THE PRECAUTIONS TO PREVENT BODILY HARM.