IMPORTANT: The following instructions are a summary.
Refer to "CHEMSEAL Install Data" and job-specific instructions of an
EMSEAL technician for complete procedures. FOR PROFESSIONAL USE ONLY.
KEEP OUT OF REACH OF CHILDREN.
• Store indoors at room temperature. Expansion is
quicker when warm, slower when cold. Substrate temperature must range
between 50deg.F (10deg.C) and 110deg.F (43deg.C).
Shelf Life: One year in original unopened packaging
stored at temperatures not to exceed 80-deg.F (26deg.C)
• Precautions: Wear chemical-resistant gloves and/or
barrier hand cream when handling liquid polysulfide sealant or epoxy.
Remove promptly from skin with a commercial hand cleaner before eating
or smoking. Avoid inhaling vapors.
• Sequencing: Install factory-fabricated transition
and/or termination pieces first. Connect straight run material to
in-place terminations and transitions. Cut closing pieces 3/8-inch
(10mm) longer than the opening to be joined. Compress material
longitudinally to fit.
• Ensure nominal material size matches joint size.
• Mix epoxy and trowel a thin layer onto the joint faces
to at least the depth of the CHEMSEAL+5 foam.
• Remove shrink-wrap packaging, hardboard.
• Wipe polysulfide facing using clean lint-free rag made
damp with solvent.
• Insert material into joint to determined depth below
the substrate surface such that the tops of the bellows are essentially
flush with the substrate surface.
• The polysulfide liquid sealant is shipped in 1.5
gallon kits in two components. Thorough blending of the base and
activator components is essential for optimum sealant performance.
Remove the Activator (part A) from the Base (part B) container. Also be
sure to remove the polyethylene sheet or tray from the B container.
Before adding Part A, mix Part B with a mixing paddle with a low-speed,
heavy-duty electric drill. Then add Part A to Part and mix for
6-minutes, or until the material is completely blended, scraping down
the sides of the container and mixing paddle periodically during mixing.
DO NOT mix base and activator components from one shipment with
components from another. DO NOT divide or split a kit--The full 1.5
gallon kit must be mixed and the mixed sealant drawn up into a bulk gun
from which it will be dispensed. The working time on a mixed kit is
about 1 hour at 70-deg F. (21-deg C). Some wastage should be expected
and extra kits may need to be ordered by the applicator depending on the
total quantity, temperature at time of installation and staging of the
• Inject a band of liquid polysulfide between mating
• Join lengths by pushing polysulfide-coated ends firmly
• Before the epoxy or the mixed polysulfide cures, force
the tip of the bulk gun cone between the foam and the substrate and
inject a polysulfide sealant band. Tool the overflow sealant into a cover
bead between the top of the polysulfide bellows and the substrate.
• Tool the polysulfide between joined lengths so that
the bellows are not restrained by excess polysulfide.
NOTE: It is critical that any exposed foam ends or
any other foam exposed during installation be field coated with the
liquid polysulfide sealant supplied. The resilient foam backing is not
resistant to chemical exposure.
• Clean Up: Remove polysulfide sealant from equipment
before it cures using MEK*, Toluene*, or Xylene*. These solvents are not
effective after the polysulfide has cured. Cured material may be removed
by cutting it away with sharp tools, sandpapering or softening with
*(Solvents mentioned or referred to are toxic and
flammable. Observe solvent manufacturer’s precautions and refer to
Material Safety Data Sheets as well as local and federal requirements
for same handling and use).
IMPORTANT Allow liquid polysulfide to
attain a complete cure before filling area with liquid (7 days minimum).
• Maintenance: If the polysulfide bellows or sealant
bands are damaged but remain intact, cut out the damaged area and recaulk.
No primer is required. If the bond has been affected or the foam backing
of the CHEMSEAL is compromised, remove the damaged area, clean and
prepare the substrates in accordance with instructions and reinstall new