MIL-PRF-121G
TABLE I. Performance requirements Continued.
TEST
PARAGRAPH
PROPERTY
REQUIREMENT
REFERENCE
Low Temperature Flexibility
No delamination, cracking, or ply
4.6.5
separation
Blocking Resistance
No blocking, delamination, or rupture
4.6.1
Contact Corrosivity
No induced corrosion in the contact area
4.6.1
Water Resistance of Marking
Markings shall remain clear and legible
4.6.1
Bursting Strength
4.6.1
Type I
45 psi (min)
Type II
30 psi (min)
4.
VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein are
classified as follows:
a. First article inspection (see 4.2).
b. Conformance inspection (see 4.3).
4.2 First article inspection. First article inspection shall consist of the examinations
specified in 4.3.2.1 and the tests specified in 4.6.
4.3 Conformance inspection. Conformance inspection shall consist of the required
examinations specified in 4.3.2.1 and the tests listed in table II.
TABLE II. Conformance tests.
TEST
PARAGRAPH
Seam Strength (as received only)
4.6.2
At room temperature
At 100°F
At 160°F
Waterproofness (as received only)
4.6.4
Oil Resistance (as received only)
4.6.1
Puncture Resistance
4.6.1
Type I
Type II
Curl Resistance
4.6.1
Bursting Strength
4.6.1
4.3.1 Sampling for conformance inspection. Unless otherwise specified, sampling for
inspection shall be performed in accordance with the provisions specified in ASQC-Z1.4.
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