TM 1-1500-204-23-6
Table 3-3. Identification of Rubber Materials
Grade and
Specification
Type or class
Forms available
Intended use
MIL-R-2765
Rubber Material,
Sheet Strip Molded
For use as a gasket where
Synthetic Oil
resistance to oil and ser-
Resistant
viceability to temperatures
above -20°F (-29°C) is
required
MIL-C-3133
Cellular Rubber
Sheet and Products
For use in the absorption
Products, General
as specified
of noise, shock,
Purpose (See
or vibration, or where
Specification)
resiliency is required.
MIL-R-5001
Type I, Cored-
Sheet or Molded
Crash protection pads,
Soft, Medium,
Latex Foam Sponge
seat cushions, goggle
Firm.
cushions, and other
Type II, Uncored-
uses requiring a material
Soft, Medium, Firm,
capable of absorbing
Extra Firm
shock, damping vibration,
and having low
compression resistance
Grade A-Flame resistant.
Grade B-Nonflame
resistant, Synthetic.
Grade C-Nonflame
resistant, natural or
combinations of
natural and synthetic
Federal Specification
Class I - Extreme
Sheet, Strip
Silicone rubber will be
ZZ-R-765
low temperature
(or tape), Extruded
used for extreme high
(Temperature
resistant.
shapes, Molded
or low temperature -100
Resistant)
Class II - High
Shapes, and Coated
to 450°F (-73 to 232°C).
temperature
Fabrics as ordered
Due to poor physical
resistant
properties of this
material, it will be used
only when other types
of rubber will not with-
stand the extreme
temperatures.
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