MIL-PRF-20092M
including the scrim reinforcement. The substitute samples shall be of the same material and equivalent cure as that
used in the lot of finished material offered for delivery (see 4.5).
4.4 Examination and tests.
4.4.1 Examination. Each of the samples taken as specified in 4.3.2 shall be examined for workmanship,
visual defects, dimensions, tolerances, and marking. Determination and evaluation of visual defects shall be in
accordance with MIL-STD-293.
4.4.2 Conformance check tests. Conformance check tests shall be conducted on end item samples from
(or representing) the first lot of material and once every 10 lots thereafter. All applicable tests as specified in
Table III shall be conducted.
TABLE III. End item tests.
Number of
Requirement
determina-
Requirement
Test
applicable to
Lot
tions per
Results reported as
Characteristic
procedure
sample unit
average
sample unit
Odor
3.4
4.5.13
X
-
5
Required by ASTM C 739
Indentation
3.6.1
4.5.1
X
-
1
To nearest 0.5 pound
per 50 square inches
To nearest 0.1 lb/ft3
Density: Uncored
3.6.2.1
4.5.2
X
-
1
material
To nearest 0.1 lb/in2
Compression
3.6.3
4.5.3
-
X
3
resistance
Low temperature
3.6.4
4.5.4
-
X
3
To nearest 1 percent
compression
resistance
Compression set
3.6.5
4.5.5
-
X
3
To nearest 0.1 percent
Flexing:
Physical break-
3.6.6
4.5.6
X
-
1
Pass or fail
down set
Set
3.6.6
4.5.6
X
-
1
To nearest 0.1 percent
Air-oven aging
3.6.7.1
4.5.7.1
-
X
2
To nearest 1 percent
Air-pressure
3.6.7.2
4.5.7.2
X
-
1
Pass or fail
heat aging
Bend fatigue
requirements:
Before aging
3.6.9
4.5.10
X
-
1
Pass or fail
After aging
3.6.9
4.5.10
X
-
1
Pass or fail
To nearest 0.1 lb/in2
Tensile strength
3.6.10
4.5.11
-
X
3
Ultimate elongation
3.6.10
4.5.11
-
X
3
To nearest 1 percent
Cemented seam
strength:
Before aging
3.6.11
4.5.12
X
-
1
Pass or fail
After aging
3.6.11
4.5.12
X
-
1
Pass or fail
Steam autoclave
3.6.12
4.5.14
X
-
3
Pass or fail
Dynamic fatigue
3.6.13
4.5.15
X
-
1
To nearest 1 percent
4.4.3 Conformance tests. Conformance tests shall be conducted on end item samples from (or
representing) all intermediate lots on which the production check tests were not conducted. Unless otherwise
specified (see 6.2), the applicable test specified in Table III shall be conducted except those for flexing, air-
7
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