Parker Chomerics CHO-SEAL 1285 Conductive Elastomer

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Parker Chomerics CHO-SEAL 1285 Conductive Elastomer
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE); Silicone
Material Notes:	Conductive Elastomer with Improved Corrosion Resistance. This conductive silicone elastomer features significantly improved corrosion resistance in salt spray environments over silver-plated copper-filled silicone, the dominant EMI gasket material for military/aerospace applications since 1962. Molded and Extruded Information provided by Chomerics
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Physical Properties	Original Value	Comments

Specific Gravity	1.75 - 2.25 g/cc	ASTM D792

Mechanical Properties	Original Value	Comments
Hardness, Shore A	58 - 72	ASTM D2240
Tensile Strength at Break	>= 200 psi	ASTM D412
Elongation at Break	100 - 300 %	ASTM D412
Tear Strength	5.25 kN/m	ASTM D624
Compression Set	<= 32 % @Temperature 100 °C, Time 252000 sec	ASTM D395 Method B

Electrical Properties	Original Value	Comments
Volume Resistivity	0.0080 ohm-cm	without pressure-sensitive material; MIL-DTL-83528
	0.015 ohm-cm	Post Tensile Set; MIL-DTL-83528
Shielding Effectiveness	>= 60 dB @Frequency 200000 Hz	H Field; MIL-DTL-83528 Para.4.6.12
	>= 100 dB @Frequency 1e+10 Hz	Plane Wave; MIL-DTL-83528 Para.4.6.12
	>= 105 dB @Frequency 2.00e+9 Hz	Plane Wave; MIL-DTL-83528 Para.4.6.12
	>= 110 dB @Frequency 5.00e+8 Hz	E Field; MIL-DTL-83528 Para.4.6.12
	>= 115 dB @Frequency 1e+8 Hz	E Field; MIL-DTL-83528 Para.4.6.12

Thermal Properties	Original Value	Comments
Thermal Conductivity	2.20 W/m-K @Pressure 2.07 MPa	ASTM D5470
Maximum Service Temperature, Air	200 °C
Minimum Service Temperature, Air	-65.0 °C	Flex TR10; ASTM D1329

Descriptive Properties
Binder	Silicone
EMP Survivability	>0.9 kA / in
Filler	Ag/Al
Grade	Military-Aerospace/B
Heat Aging	<0.01 ohm-cm	MIL-DTL-83528 Para.4.6.15
Type	B	MIL-DTL-83528
Vibration Resistance, After	<0.008 ohm-cm	MIL-DTL-83528 Para.4.6.13
Vibration Resistance, During	<0.012 ohm-cm	MIL-DTL-83528 Para.4.6.13

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