Simpson Crack-Pac Flex-H20:
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
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 encounters water as it is injected into the crack, it becomes an
expanding foam that provides a flexible seal in leaking and non-leaking cracks.
• Seals seeping or mildly leaking cracks
• 4 00% elongation provides a flexible seal for moving
• Can be dispensed with a standard caulking tool
• Can also be used on dry cracks
• E xpands to fill voids and close off the back of the crack
• E xpanding nature makes it suitable for sealing cracks
in solid masonry
• Fast reacting - reaction begins within 1 minute after
exposure to moisture;
expansion may be completed
within 3 minutes (depending on the amount
and the ambient temperature).
• N on-shrinking hydrophobic formula with the elongation
and flexibility of a hydrophilic resin
• 20:1 expansion ratio (unrestricted rise) means less
• Suitable for sealing cracks ranging from ¹⁄32 " to ¹⁄4"
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.
• 12 months from the date of manufacture, unopened.
• 60°- 90°F
• For best results store in a dry area between 45°- 95°F.
Product is very moisture sensitive.
• Polyurethane - Clear; Accelerator - Green; Cured - Green.
Uncured Material: Wipe up with cotton cloths.
with abrasive, waterbased cleaner and flush
with water. If approved, solvents
such as ketones (MEK,
acetone, etc.), laquer thinner, or adhesive remover can
DO NOT USE SOLVENTS TO CLEAN ADHESIVE FROM SKIN. Take appropriate
precautions when handling flammable solvents. Solvents may damage surfaces to
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.