TM 1-1270-476-30
2-22
2-6. SEALING COMPOUNDS AND ADHESIVES REMOVAL, APPLICATION, CURING, AND
OUTGASSING (cont)
5. ADHESIVE SEALING COMPOUND
(POLYSULFIDE BASE)
WARNING
TRICHLOROETHANE
• Flammable, toxic, irritating. can cause
breathing problems, eye damage.
• At 325°F, gives off phosgene gas, which can
cause death or serious injury.
• Don’t: Use near flames or sparks, let it get
on skin, or breathe vapors.
• Do: Use in well-ventilated area, close
containers when not using. Wear acid-type
safety goggles, rubber gloves, and rubber
apron.
• If it contacts skin or eyes, wash affected
areas with running water. Get medical help
at once.
• If you experience any breathing problems,
get to fresh air at once.
WARNING
ADHESIVE SEALING COMPOUND
(POLYSULFIDE BASE)
• Flammable, toxic, can cause breathing
problems.
• Don’t: Use near flames or sparks or breathe
vapors.
• Do: Use in well-ventilated area, close
containers when not using.
• If you experience shortness of breath, or
other breathing problems, get to fresh air at
once.
REMOVAL
a. Remove cured compound as follows:
(1) Scrape compound from surfaces with
knife.
(2) Sand surface with 180 grit abrasive
paper.
(3) Clean surfaces with clean cloth and
trichloroethane.
APPLICATION (Work life is 3 hours for 3M EC-
801/1063 or 2 hours for CHEM SEAL CS3202.)
b. Clean surfaces with clean cloth and
trichloroethane.
NOTE
Two different types of adhesive sealing
compound are used. If using 3M EC-801/1063,
go to step c. If using CHEM SEAL CS3202, go
to step d.
c. 3M EC-801/1063: Mix 100 parts base to 15
parts accelerator by weight. Go to step e.
d. CHEM SEAL CS3202: Mix 100 parts base
to 10 parts curing agent by weight.
e. Apply compound to mating surfaces of
parts to be sealed with a knife or small putty
knife.
f. Remove excess uncured compound using
cloth and trichloroethane after parts have
been mated.
CURING
g. Cure compound for 24 hours at 67 to 87°F.
END OF TASK
