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Ensinger PEI

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Parker Chomerics CHO-FORM 5541 Conductive Form-In-Place Gaskets
Categories: Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE); Silicone

Material Notes: Description: A range of conductive particle technologies combined with thermoset and RTV silicone systems provide a material selection for most opportunities. Multiple filler grades balance material cost versus performance and can provide low cost alternatives for less demanding applications. Chomerics corrosion resistant materials inherently provide protection against galvanic activity. They may eliminate the need for nickel or tin plating and or secondary environmental gaskets. Chomerics general purpose materials exhibit excellent electrical and mechanical properties on metallic and shield plastic housing. Chomerics silver filled materials provide high shielding and conductivity critical for inter-compartmental shields. CHOFORM delivers a greater deflection range, lower deflection forces & improved reliability.

Features: Lower deflection forces and a broad deflection range, Corrosion resistant materials can eliminate plating or secondary environmental gasket, Good adhesion to many substrates, Supply chain management providing ongoing logistics, Low cost and rapid prototyping and Corrosion Resistant, High Temp.

Information provided by Chomerics

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Physical PropertiesOriginal ValueComments
Specific Gravity 2.40 g/ccASTM D792
Viscosity 1.70e+6 cP
Deformation 30 %141.8 N/cm; ASTM D575 Modified
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 75 - 79ASTM DD2240
Tensile Strength at Break 450 - 500 psiASTM D412
Elongation at Break 125 %ASTM D412
Compression Set 30 %
@Temperature 70.0 °C,
Time 79200 sec
ASTM D395 Method B
 40 %
@Temperature 85.0 °C,
Time 79200 sec
ASTM D395 Method B
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 0.020 ohm-cmInitial; Chomerics MAT-1002
 0.030 ohm-cmChomerics MAT-1002
 0.040 ohm-cmAged; Chomerics MAT-1002
Shielding Effectiveness 65 - 70 dB
@Frequency 2.00e+8 - 1.20e+10 Hz
 
Thermal PropertiesOriginal ValueComments
Maximum Service Temperature, Air 150 °C
Flammability, UL94 V-0
 
Processing PropertiesOriginal ValueComments
Cure Time 30.0 min
@Temperature 150 °C
Handling Time
 30.0 min
@Temperature 150 °C
Full Cure
Tack-Free Time 30.0 min
@Temperature 150 °C
Shelf Life 6.00 Month
@Temperature -12.0 - -8.00 °C
Chomerics
 
Descriptive Properties
Adhesion10-12 N/cmTrivalent Chromate Coating on Aluminum
BinderSilicone
Cure SystemThermal
FillerNickel-plated graphite (Ni/C)
Flow Rate0.85 - 1.15 grams/minChomerics - MAT-1200
Galvanic Corrosion32 mgResistance Against Aluminum; Chomerics TM-100
Number of Components1

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