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Ensinger PEI

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Parker Chomerics CHOFORM® 5550 Conductive Form-in-Place Gasket
Categories: Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)

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 Soft Ni/C, Corrosion Resistant.

Information provided by Chomerics

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Physical PropertiesOriginal ValueComments
Specific Gravity 2.20 g/ccASTM D395
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 55ASTM D2240
Tensile Strength 175 psiASTM D412
Elongation at Break 175 %ASTM D412
Tensile Impact 32.4 ft-lb/inForce Deflection at 30%; ASTM D575 Modified
Compression Set 25 %
@Temperature 70.0 °C,
Time 79200 sec
ASTM D395, Method B
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 0.035 ohm-cmChomerics MAT-1002
Shielding Effectiveness <= 65 dBModified IEEE-299
 
Thermal PropertiesOriginal ValueComments
Maximum Service Temperature, Air 125 °C
Flammability, UL94 V-0
 
Processing PropertiesOriginal ValueComments
Cure Time 0.500 hour
@Temperature 150 °C
Handling Time
 0.500 hour
@Temperature 150 °C
Full Cure
Tack-Free Time 0.500 hour
@Temperature 150 °C
Shelf Life 6.00 Month
@Temperature -12.0 - -8.00 °C
Chomerics
 
Descriptive Properties
Adhesion12 N/cmTrivalent Chromate Coating on Al, Chomerics WI 1038
BinderSilicone
Corrosion Resistance20Galvanic Resistance Against Aluminum
Cure SystemThermal
FillerNi/C
Number of Components1
Resin SystemSilicone

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PCHOME209 / 130919

Proto3000 – 3D Engineering Solutions

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