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Parker Chomerics SOFT-SHIELD® 4008 Low Closure Force, Foam Core EMI Gasket

Category Polymer , Thermoset , Polyurethane, TS , Thermoset Polyurethane Foam, Unreinforced
Manufacturer Parker Chomerics
Trade Name SOFT-SHIELD®
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Parker Chomerics SOFT-SHIELD® 4008 Low Closure Force, Foam Core EMI Gasket.pdf
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Material Notes:
Description: Chomerics’ SOFT-SHIELD 4000 Series materials are low-cost, low closure force EMI gaskets that provide effective shielding and grounding of commercial electronic devices, indoor enclosures and industrial equipment. Their availability in thin cross sections makes them an ideal choice for access panel, back plane or I/O connector panel shielding. Rectangular in cross section, the 4000 Series materials are constructed of a closed cell urethane foam that is machine wrapped with a fabric-reinforced aluminum foil. This combination provides the shielding performance of foil and the conformability and toughness of fabric. Each material includes conductive, pressure-sensitive adhesive on one side, which provides a means of gasket attachment without compromising shielding performance. The fabric-reinforced foil covering has no loose conductive fibers or sharp edges. Low compression set, low surface resistivities, and durability make 4000 Series gasketing an excellent EMI shielding solution.Information provided by Chomerics
Mechanical Properties Metric English Comments
Peel Strength 0.438 kN/m
2.50 pli
To Aluminum, Ambient Temperature; ASTM D1000
0.438 kN/m
2.50 pli
To Steel, Ambient Temperature; ASTM D1000
0.525 kN/m

@Treatment Temp. 177 °C,
Time 173000 sec
 3.00 pli

@Treatment Temp. 351 °F,
Time 48.0 hour
 To Steel; ASTM D1000
0.5425 kN/m

@Treatment Temp. 177 °C,
Time 173000 sec
 3.096 pli

@Treatment Temp. 351 °F,
Time 48.0 hour
 To Aluminum; ASTM D1000
0.6825 kN/m

@Treatment Temp. 177 °C,
Time 3600 sec
 3.894 pli

@Treatment Temp. 351 °F,
Time 1.00 hour
 To Steel; ASTM D1000
0.700 kN/m

@Treatment Temp. 177 °C,
Time 3600 sec
 3.99 pli

@Treatment Temp. 351 °F,
Time 1.00 hour
 To Aluminum; ASTM D1000
0.700 kN/m

@Treatment Temp. 74.0 °C,
Time 173000 sec
 3.99 pli

@Treatment Temp. 165 °F,
Time 48.0 hour
 95% RH, To Steel; ASTM D1000
0.7175 kN/m

@Treatment Temp. 74.0 °C,
Time 173000 sec
 4.094 pli

@Treatment Temp. 165 °F,
Time 48.0 hour
 95% RH, To Aluminum; ASTM D1000
0.875 kN/m

@Treatment Temp. 204 °C,
Time 3600 sec
 4.99 pli

@Treatment Temp. 399 °F,
Time 1.00 hour
 To Steel; ASTM D1000
0.8925 kN/m

@Treatment Temp. 204 °C,
Time 3600 sec
 5.093 pli

@Treatment Temp. 399 °F,
Time 1.00 hour
 To Aluminum; ASTM D1000
Compression Set <= 20 %
<= 20 %
25% Deflection; ASTM D395 Method B
Thermal Properties Metric English Comments
Maximum Service Temperature, Air 70.0 °C
158 °F
Flammability, UL94 V-0
V-0
Electrical Properties Metric English Comments
Surface Resistivity per Square 0.0070 ohm

@Temperature 121 °C,
Time 605000 sec
 0.0070 ohm

@Temperature 250 °F,
Time 168 hour
 Initial; CHO-TM-TP57
0.0070 ohm

@Temperature 35.0 °C,
Time 605000 sec
 0.0070 ohm

@Temperature 95.0 °F,
Time 168 hour
 95% RH, Initial; CHO-TM-TP57
0.0090 ohm

@Temperature 85.0 °C,
Time 605000 sec
 0.0090 ohm

@Temperature 185 °F,
Time 168 hour
 Initial; CHO-TM-TP57
0.010 ohm

@Temperature 35.0 °C,
Time 605000 sec
 0.010 ohm

@Temperature 95.0 °F,
Time 168 hour
 95% RH, Final; CHO-TM-TP57
0.010 ohm

@Temperature 70.0 °C,
Time 7.88e+6 sec
 0.010 ohm

@Temperature 158 °F,
Time 2190 hour
 Initial; CHO-TM-TP57
0.010 ohm

@Temperature 70.0 °C,
Time 7.88e+6 sec
 0.010 ohm

@Temperature 158 °F,
Time 2190 hour
 Final; CHO-TM-TP57
0.014 ohm

@Temperature 85.0 °C,
Time 605000 sec
 0.014 ohm

@Temperature 185 °F,
Time 168 hour
 Final; CHO-TM-TP57
0.017 ohm

@Temperature 121 °C,
Time 605000 sec
 0.017 ohm

@Temperature 250 °F,
Time 168 hour
 Final; CHO-TM-TP57
Shielding Effectiveness 80 dB

@Frequency 1.00e+10 Hz
 80 dB

@Frequency 1.00e+10 Hz
 CHO-TM-TP08
90 dB

@Frequency 1.00e+8 Hz
 90 dB

@Frequency 1.00e+8 Hz
 CHO-TM-TP08
93 dB

@Frequency 1.00e+9 Hz
 93 dB

@Frequency 1.00e+9 Hz
 CHO-TM-TP08
Descriptive Properties Value Comments
Adhesion >2.5 lb/in
Initial PSA, ASTM D1000
Compression Cycling 10000 cycles at 50% Deflection, Final
10000 cycles at 50% Deflection, Initial
Compression-Deflection, 25% deflection <3 to <8 psi
ASTM D3574 Modified
Core PORON Urethane Foam
Jacket Fabric-Reinforced Aluminum Foil
PSA Type Chomerics Electrically Conductive Acrylic
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