MIL-PRF-46846D
3.7 Solvent resistance. Type I class 2, type II classes 1 and 2, type III classes 1 and 2,
type IV classes 1 and 2, and type VI classes 1 and 2, shall be resistant to solvents when tested in
accordance with tables II and III (see 4.5.6).
3.8 Propellant resistance, type IV. Type IV classes 1 and 2 shall be resistant to
hydrazine/unsymmetrical dimethylhydrazine (UDMH), nitrogen tetroxide, and nitric acid
(see 4.5.7).
WARNING
UDMH is hazardous material and should be handled in accordance with
the manufacturer's material safety data sheet.
3.9 Eccentricity of tubing. A thin wall area, due to eccentricity, shall be not greater than
that shown in table II (see 4.5.8).
3.10 Ozone resistance type VI. When specified in the contract or order (see 6.2), type VI
classes 1 and 2 shall be tested for ozone resistance requirements (see 4.5.9).
3.11 Color. All types and classes of the tubing, molded parts and extruded shapes, shall be
black (see 4.5.1).
3.12 Workmanship. The synthetic rubber tubes, parts, and shapes shall be free from foreign
material, flaws, pinholes, bubbles, cracks, inclusions, and excessive flash, and shall be
homogeneous in texture (see 4.4.1.1).
4. VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein are classified
as follows:
a. First article inspection (see 4.3).
b. Conformance inspection (see 4.4).
4.2 Inspection conditions. Unless otherwise specified, all inspections shall be performed on
a lot. A lot shall consist of that quantity of synthetic rubber compound produced in one
continuous operation by the same manufacturer and manufactured in accordance with the same
specification and specification revision.
4.3 First article inspection. First article inspection shall consist of all the examinations and
tests specified herein plus the storage tests (see 4.3.1 and 4.3.2).
4.3.1 Low-temperature storage. The synthetic rubber shall be placed in a temperature
chamber at a temperature of -55 + 30°C for not less than 72 hours. Upon completion of the
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