Crack-Pac Flex-H₂0 is a single component hydrophobic polyurethane injection resin designed to seal leaking cracks, voids or fractures in concrete or solid masonry. The polyurethane is packaged in the cartridge and an accelerator is packaged in the nozzle. When the two are combined in the cartridge and mixed, the result is a low viscosity, water activated polyurethane. When the resin enco unters water as it is injected into the crack, it becomes an expanding foam that provides a flexible seal in leaking and non-leaking cracks.

FEATURES

• Seals seeping or mildly leaking cracks
• 400% elongation provides a flexible seal for moving cracks
• Can be dispensed with a standard caulking tool
• Can also be used on dry cracks
• Expands to fill voids and close off the back of the crack
• Expanding nature makes it suitable for sealing cracks in solid masonry
• Non-shrinking hydrophobic formula with the elongation and flexibility of a hydrophilic resin
• 20:1 expansion ratio (unrestricted rise) means less material needed

MATERIAL SAFETY DATA SHEETS

• Material Safety Data Sheet: Crack-Pac Flex-H₂0 (PDF)
• Material Safety Data Sheet: Crack-Pac Flex-H₂0 en Español (PDF)

APPLICATION

Suitable for sealing cracks ranging from 1/32" to 1/4" wide in concrete and solid masonry. Can be used to repair cracks in dry, damp and wet conditions with excellent results. Designed to perform in applications where water is seeping or mildly leaking from the crack.

INSTALLATION

• Installation Instructions
• Injection Guide

SHELF LIFE

12 months from the date of manufacture, unopened.

USAGE TEMPERATURE:

60°-90° F

STORAGE CONDITIONS

For best results store in a dry area between 45° F - 95° F. Product is very moisture sensitive.

COLOR

Polyurethane - Clear; Accelerator - Green; Cured - Green.

CHEMICAL RESISTANCE

Very good to excellent against water, most hydrocarbons and alkaliis. Poor to fair against ketones, chlorinated solvents and concentrated acids.

LINKS:

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CLEAN UP

Uncured Material: Wipe up with cotton cloths. If desired scrub area with abrasive, waterbased cleaner and flush with water. If approved, solvents such as ketones (MEK, acetone, etc.), lacquer thinner, or adhesive remover can be used. DO NOT USE SOLVENTS TO CLEAN ADHESIVE FROM SKIN. Take appropriate precautions when handling flammable solvents. Solvents may damage surfaces to which they are applied. Cured Material: scrape or brush off surface with a putty knife or wire brush. Tip: wetting the concrete or masonry surface immediately prior to injection will make cured resin easier to remove.

DEFINITIONS

Dry Crack: A crack containing no moisture.
Wet Crack: A crack containing moisture (damp or containing standing water). The surface can be dried and will remain dry during the paste-over operation.
Seeping Crack: A wet crack that slowly oozes water. After being dried, the surface slowly becomes wet again.
Mildly Leaking Crack: A crack with a slow trickle of water emitting from its face.