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Tech Data

WaterTron Epoxy XLT



Solids by Weight


Solids by Volume
Colors Available Light tan color when mixed

0.1333 cubic feet or 1,228 lineal feet @ 1/8” x 1/8”


3 gallon and 15 gallon kits

Mix Ratio

1 gallon part A to 0.50 gallons part B

Pot Life
15-25 minutes @ 70° (1.5 gallon volume)
Dry to Touch
6-10 hours

10-16 hours

Full Cure 3-7 days
Application Temperature

35-90 degrees F

Primer None necessary


Shelf Life

1 year in unopened containers

Volatile Organic Content Zero pounds per gallon
Recommended Film Thickness Variable
Flexural Strength

4,960 psi @ ASTM D790

Compressive Strength

9,440 psi @ ASTM D695

Adhesion 395 psi  @ elcometer (concrete failure, no delamination)
Viscosity Mixed = 187,000 cps (typical)
DOT Classifications

Part A “not regulated”; Part B “Corrosive Liquid N.O.S., 8, UNI1760, PGIII”

Tensile Strength 4,114 psi @ ASTM D638
Ultimate Elongation


Gardner Variable Impactor 50 inch pounds direct – passed
Shrinkage Negligible due to 100% solids formulation
Hardness Shore D = 83
Heat Deflection Temperature 59.4 degrees C 

Application Instructions:

Storage and Preparation
Store product at normal room temperature before using. Continuous storage should be between 60 and 900 F. Low temperatures or temperature fluctuations may cause crystallization.

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 from within the expansion joint to assure a trouble free bond to the substrate. However, this product can successfully be applied to damp, wet or even underwater substrates.

This product has a mix ratio of two parts A to one part B by volume. Normally, the product comes supplied in pre-measured kits. The most accurate way to measure mixing proportions would be by weight (11.6 pounds part A to 5.65 pounds part B, although volume ratios at 2: 1 can be utilized). We highly recommend that the kits not be broken down unless suitable weighing equipment is available. 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. Make sure to scrape the sides and bottom of the mixing container thoroughly when mixing. Water will not impede the cure mechanism for this product. Improper mixing may result in product failure. A primer is not necessary.

The mixed material can be applied by pouring the mixed material directly into the crevice or expansion joint to be repaired. Remove any excess material with a putty knife or similar tool when not underwater. If applying the material underwater, then remove any excess with a scraper type tool after is has partially set up and tacked off. Because of the vastly differing types of applications possible for this product, we recommend that a representative sample be placed and evaluated prior to commencing any large job application. When applying this material underwater, make sure that the material displaces all water beneath the application to assure contact with the substrate (which will create a proper bond). The density of the material is greater than that of water and should force out the water when poured into the expansion joint. This product is not intended for small type hairline cracks. When applying material in an expansion joint, a suitable backer rod can be used provided it is not made of material that will absorb water.

This product can be applied in successive applications. Topcoating with other products are normally not performed underwater. Always remember that colder temperatures will require more cure time for the product before recoating can commence. Clean up using xylol.