MIL-PRF-8516G
3.3.2.2 Electric properties. The electric properties of the cured sealing compound shall be
as specified in table II.
TABLE II. Electric properties of cured compound.
Property
Requirement 3/
Test
Cure A (4.7.1) Cure B (4.7.2)
paragraph
Arc resistance, seconds, minimum 1/
25
50
4.9.3.1
Dielectric strength, volts/mil, minimum
200
200
4.9.3.2
Dielectric constant, maximum
4.9.3.3
1 kHz at 77°F (25°C)
9.5
9.5
1 MHz at 77°F (25°C)
9.5
9.5
l kHz at 185°F (85°C)
9.0
l MHz at 185°F (85°C)
9.0
Dissipation factor, maximum
4.9.3.3
1 kHz at 77°F (25°C)
0.03
0.01
1 MHz at 77°F (25°C)
0.03
0.03
1 kHz at 185°F (85°C)
Type I
0.090
Type II
0.030
l MHz at 185°F (85°C)
Type I
0.095
Type II
0.030
Resistivity, minimum
4.9.3.4
1 × 1010
1 × 1010
Volume at 77°F (25°C), ohm-cm
1 × 1011
1 × 1011
Surface at 77°F (25°C), ohm
Volume at 185°F (85°C), ohm-cm
5 × 109
Type I
2 × 1010
Type II
2 × 1011
Surface at 185°F (85°C), ohm
Insulation resistance, megohm, minimum,
4.9.3.5
as received 2/
Plastic inserts
4,000
10,000
Resilient inserts
4,000
8,000
Insulation resistance, megohm, minimum,
4.9.3.6
after thermal shock
Plastic inserts
10,000
Resilient inserts
8,000
8
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