MIL-PRF-24699A (SH)
TABLE VI. Rivet and grommet load bearing strength.
Pounds of pull
Type I
180
Type II
180
3.7 Flexural rigidity. Flexural rigidity values shall not exceed the values in Table VII. In addition, the
barrier material shall show no visible rupture or cracking on the outer or inner surfaces during and following the
test.
TABLE VII. Maximum flexural rigidity.
°
Inch-pounds
F
45
1.0
133
0.3
3.8 Peel strength (type I). Woven outer facing 180 degree peel strength shall be in accordance with
Table VIII.
TABLE VIII. Minimum woven outer facing peel strength.
Warp (lb/in)
Fill (lb/in)
Type I
4
2
3.9 Fire resistance. Fire resistance shall be as specified below.
3.9.1 Flammability (type I). Materials shall provide a flame spread index of 30 or less.
3.9.2 Smoke density (type I). Materials shall not exceed the smoke density limits specified in Table IX .
TABLE IX. Smoke density (type I).
Class
Rating
1
300
2
350
3
450
3.9.3 Noncombustibility (type II). Type II barrier material shall be noncombustible.
3.10 Sound transmission loss. Sound transmission loss shall be as specified below.
3.10.1 Type I material. Sound transmission loss values of type I barrier material in decibels (dB) shall be
not less than the minimum values specified in Tables X, XI, and XII.
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