Cessna 182 1978 - Testing Criteria; Adhesives, Cements and Sealants Shelf Life and Storage; Storage Criteria

MODEL 182 & T182
SERIES SERVICE
MANUAL
(g) Class
IX - These are
polyurethane
1-15. ADHESIVES,
CEMENTS AND SEALANTS products
Store in original container, between
70°F
- SHELF
LIFE AND STORAGE
and 100°F. Urethanes are moisture sensitive
and
a. General
precautions
should be taken
to ensure complete
1 This section
provides information
which protection
from moisture
contamination. Container
defines
the proper storage
and usable life
(shelf life) of must
be tightly closed
at all times.
adhesives, cements
and sealents which
are used for
(h) Class X
- These are acrylic base
maintenance and/or
repair of the airplane.
Also, materials.
They require storage
at 40°F or per
included in this
section is the criteria
used for testing
instructions on
product container.
these materials
after the normal shelf
life has expired,
c Storage
of Sealants.
to determine
if an extension to the shelf
life is possible.
1. All sealants shall
be stored under controlled
2. Shelf life refers
to a specified period
of time temperature
conditions. If open
shop storage becomes
usually from the
date of manufacture
(normally
necessary,
these products
shall in
no case be stored
in
stamped
or printed on
the product container)
to the
an area which
will subject
them to temperatures
in
expiration
date
(which should
be determined
using
excess
of 95°F
or below
40°F. Containers
shall
be
limits specified in Table
1-7 or if applicable,
the tightly
closed prior to placing
them in the proper
manufacturer's
expiration
date printed
or stamped
on storage
environment.
For proper storage
environment,
the
product container). The
specified shelf life
is refer to Table
1-7 and the following
paragraphs.
dependent
on proper
storage in accordance
with
the
(a) Premixed
and frozen
sealants shall be
limits specified
in this section
and/or the
stored at -40°F or
colder and shall not be
used more
manufacturer's
instructions.
than six weeks
after the
date of mixing
even if all
b Storage Criteria
storage
is at -40°F or colder.
If storage temperatures
1 Storage of Adhesives
and Cements.
rise above
-40°F, but not warmer
than -30F, the
All
adhesives and
cements shall
be stored under
material
may be stored
for a maximum
of two weeks
controlled
temperature conditions.
If open shop
warmer than -40°F
plus time at -40°F or
colder for a
storage becomes
necessary, these
products shall
in no combined
total not
to exceed five
weeks beyond
the
case be
stored in an area which
will subject them to
date of mixing. If
storage temperatures
rise above
temperatures
in excess of 95°F Containers
shall be
-40F but are not warmer
than -20°F, the materials
tightly closed prior
to being placing them
into the may be
stored for a maximum
of one week above -30°F
proper
storage environment.
For proper storage
plus time at -40°F
or colder for a combined
total not to
environment,
refer to Table 1-7 and the following
exceed four weeks beyond the date of mixing.
paragraphs.
(b) Unmixed sealants
shall be stored at a
(a) Class I -
These adhesives are epoxy base controlled
temperature of between 40°F and 80°F
and
materials and
have one year storage
at room
have a shelf life of approximately
six months
when
temperature. 0°F storage will extend
the storage life. stored within this
temperature range. Unmixed
Refer to the
product container instructions
for storage
sealants stored at temperatures
exceeding 80°F
shall
temperature and life.
be
used within five weeks.
(b) Class II, III and
IV - These adhesives
2. All
materials should be
used on a "first in-
are rubber and resin
base and are good
for six months first
out" basis The adhesives,
cements and sealants
at room
temperature storage.
40°F storage will extend
should be rotated
so this requirement
can be
the storage life
Refer to the product container
accomplished.
All material
containers should
be
instructions for limits
of each adhesive.
clearly marked
with a "use by" date,
consisting of the
(c)
Class V. These are
silicone rubber
year and month
All materials not used
by this date
adhesives.
If stored in their original
containers at a
must be tested prior
to use. Refer to Testing
criteria
temperature
below 80°F, have a shelf
life of one year and Table
1-7.
or as indicated on the storage container
d.
Testing Criteria
(d)
Class VI These are
solvent bonding
I Any material
(adhesive, cement
or sealant)
solvents They should
be stored in their original
not used
within its shelf life will
be tested and the
containers
and tightly closed,
and stored at 40°F
results reviewed
to determine if the material
is usable
temperature
If there
is doubt about the material
being usable, it
(e)
ClassVII - Cyanoacrylate base
must be properly disposed of. Material
that has
materials
must he stored in the
original containers
at exceeded its original
shelf life may be
retested to
40°F or as specified on
the container instructions determine
if the material meets its requirements
sensitive
materials
The shelf life is
two years when
shelf life
extended as specified
in Table
1-7. Materials
stored at 75°F
and 50 percent relative
humidity
with shelf life extensions
must be retested
after a
specified period of time Refer toTable 1-7
1-18 Revision 2