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SAE AMS 3281D Document Information:
Title
Sealing Compound, Polysulfide (T) Synthetic Rubber for Integral Fuel Tank and Fuel Cell Cavities Low Density for Intermittent Use to 360 °F (182 °C)
SAE International
Publication Date:
Mar 1, 2008
Scope:
Form
This specification covers three types and three classes of
fuel-resistant polysulfide (T) sealing compound with low specific
gravity, supplied as a two-component system which cures at room
temperature.
Application
This sealing compound has been used typically in sealing
aircraft integral fuel tanks, fuel tank fillets and faying
surfaces, pressure barriers and moldline surfaces, but usage is not
limited to such applications. The sealing compound is resistant to
jet fuels and is capable of withstanding long-term exposure from
-65 to +250 °F (-54 to +121 °C) and short-term exposure (six hours)
to 360 °F (182 °C).
Classification
Type 1 - Sealing compound with a specific gravity of 1.20 to
1.35.
Type 2 - Sealing compound with a specific gravity of 1.06 to
1.19.
Type 3 - Sealing Compound with a specific gravity of 1.05 or
less.
Sealing compounds covered by this specification are classified
by method of application and application times as follows:
Class A Suitable for application by brushing, injecting, or
spraying. Available with the following application times in
hours:
A-1/2
A-2
Class B Suitable for application by extrusion gun or spatula.
Available with the following application times in hours:
B-1/2
B-2
Class C Suitable for faying surface or shim sealing, brush
coating, or wet installation. Available with the following
application times in hours:
Notation: ( ) Assembly time in hours.
C-2(2)
C-8(24)
C-12(48)
C-48(168)
C-96(336)
Safety - Hazardous Materials
Shall be in accordance with AS5502 (1.1).
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