Parker Chomerics CHO-SEAL 1298 EMI Shielding Material

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Parker Chomerics CHO-SEAL 1298 EMI Shielding Material
Categories:	Polymer; Thermoset; Fluoropolymer, TS; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Corrosion Resistant EMI Shielding Gasket. Through the use of new proprietary particle painting and elastomer compounding technology, CHO-SEAL® 1298 shielding elastomer offers a six-fold increase in corrosion resistance over products previously available. In fact, a virtually corrosion-proof EMI flange system is obtained when CHO-SEAL 1298 gaskets are used in conjunction with Chomerics CHO-SHIELD® 2000 series corrosion resistant coatings on aluminum flanges. Information provided by Chomerics
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Physical Properties	Metric	English	Comments

Specific Gravity	1.75 - 2.25 g/cc	1.75 - 2.25 g/cc	ASTM D792

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	63 - 77	63 - 77	ASTM D2240
Tensile Strength at Break	>= 1.24 MPa	>= 180 psi	ASTM D412
Elongation at Break	60 - 260 %	60 - 260 %	ASTM D412
Tear Strength	6.13 kN/m	35.0 pli	ASTM D624
Compression Set	<= 30 % @Temperature 100 °C, Time 252000 sec	<= 30 % @Temperature 212 °F, Time 70.0 hour	ASTM D395 Method B

Electrical Properties	Metric	English	Comments
Volume Resistivity	<= 0.012 ohm-cm	<= 0.012 ohm-cm	MIL-DTL-83528
	<= 0.015 ohm-cm	<= 0.015 ohm-cm	Life Test/Post Tensile; MIL-DTL-83528 Para.4.6.12
Shielding Effectiveness	>= 55 dB @Frequency 200000 Hz	>= 55 dB @Frequency 200000 Hz	H Field; MIL-DTL-83528 Para.4.6.12
	>= 75 dB @Frequency 4.00e+10 Hz	>= 75 dB @Frequency 4.00e+10 Hz	Plane Wave; MIL-DTL-83528 Para.4.6.12
	>= 90 dB @Frequency 1e+10 Hz	>= 90 dB @Frequency 1e+10 Hz	Plane Wave; MIL-DTL-83528 Para.4.6.12
	>= 95 dB @Frequency 2.00e+9 Hz	>= 95 dB @Frequency 2.00e+9 Hz	Plane Wave; MIL-DTL-83528 Para.4.6.12
	>= 100 dB @Frequency 5.00e+8 Hz	>= 100 dB @Frequency 5.00e+8 Hz	E Field; MIL-DTL-83528 Para.4.6.12
	>= 110 dB @Frequency 1e+8 Hz	>= 110 dB @Frequency 1e+8 Hz	E Field; MIL-DTL-83528 Para.4.6.12

Thermal Properties	Metric	English	Comments
Thermal Conductivity	1.20 W/m-K @Pressure 2.07 MPa	8.33 BTU-in/hr-ft²-°F @Pressure 300 psi	ASTM D5470
Maximum Service Temperature, Air	200 °C	392 °F
Minimum Service Temperature, Air	-55.0 °C	-67.0 °F	Flex TR10; ASTM D1329

Descriptive Properties
Binder	Fluorosilicone
EMP Survivability	>0.9 kA / in		MIL-DTL-83528 Para.4.6.16
Filler	Passivated Ag/Al
Gravimetric Weight Loss, mg	3.5
Heat Aging	<0.015 ohm-cm		MIL-DTL-83528 Para.4.6.15
Type	D		MIL-DTL-83528
Vibration Resistance, After	<0.012 ohm-cm		MIL-DTL-83528 Para.4.6.13
Vibration Resistance, During, ohm-cm max	<0.015 ohm-cm		MIL-DTL-83528 Para.4.6.13

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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