MIL-DTL-3432J
APPENDIX B
Hydrolytic stability:
Tensile strength, minimum % of original
50
Elongation, minimum % of original
70
Durometer "A", maximum points change
8
B.2.15 Jacketing compound, type JN moderate low temperature, chlorinated polyethylene rubber (CM).
Unaged:
Tensile strength, minimum psi
1800
Elongation, minimum %
300
Set, maximum inch
.375
Tensile stress, (200% elongation, minimum psi)
500
After 95 ± ½ hour oxygen bomb aging at 70°C:
Tensile strength, minimum % of original
75 (but not less than 1600 psi)
Elongation, minimum % of original
65 (but not less than 250 psi)
Ozone resistance (after air oven conditioning and
168 ± 1 hour in ozone) at 120°F
no visible cracks
Brittleness temperature, unaged, max. °C
-40
After aging, max. °C
-40
After oil immersion:
Tensile strength, minimum % of original
60
Elongation, minimum % of original
60
B.2.16 Jacketing compound, type JN-L low temperature, chlorinated polyethylene rubber (CM).
Unaged:
Tensile strength, minimum psi
1500
Elongation, minimum %
300
Set, maximum inch
.375
Tensile stress, (200% elongation, minimum psi)
500
Tear resistance, minimum lb-in
20
After 95 ± ½ hour oxygen bomb aging at 70°C:
Tensile strength, minimum % of original
75
Elongation, minimum % of original
75
After 168 ± 1/2 hour air oven aging at 70°C:
Tensile strength, minimum % of original
80
Elongation, minimum % of original
80
Ozone resistance (after air oven conditioning and
168 ± 1 hour in ozone) at 120°F
no visible cracks
Brittleness temperature, unaged, max. °C
-55
After aging, max. °C
-55
Torsional stiffness ratio, max
30
After oil immersion:
Tensile strength, minimum % of original
60
Elongation, minimum % of original
60
38
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