MIL-DTL-85052/3C
FINISH:
Metal band. Passivate in accordance with SAE-AMS-QQ-P-35, Type II
Cushion. None
CUSHION REQUIREMENTS:
1. Physical properties. Physical properties shall be as specified in table II. Unless otherwise
o
specified, results are an average of 5 specimens and tolerance on temperature + 5 F.
2. Compression set: - See MIL-DTL-85052.
- Air age at 302 °F.
- Not to exceed 30 percent average of 3 specimens.
3. Flammability:
- See MIL-DTL-85052.
- Specimens -16 size clamp assemblies unbent until flat.
- Vertical burn test.
Table II. Physical properties.
Allowable change from actual original
Required
properties after:
Original
Test
Test
Heat aging Oil immersion in
Properties
Method
MIL-PRF-7808
DIP test
70 hrs at
o
o
1/
500 F
70 hrs at + 302 F
Hardness
+ 5 PTS
ASTM-D2240
65-75
+ 10 PTS
- 30 PTS
durometer
Max
Max
"A"
Tensile
ASTM-D412
strength
1200 Min
1000 Min
300 Min
800 Min
2/
(PSI)
Elongation
ASTM-D412
30 Min
30 Min
30 Min
30 Min
(%)
2/
ASTM-D624
300 Min
300 Min
300 Min
300 Min
Tear
(DIE "B")
strength
(PPI)
4
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