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Momentive Performance Materials RTV656 Clear Extreme Low Temperature Potting/Encapsulating Compound

Category Polymer , Thermoset , Rubber or Thermoset Elastomer (TSE) , Silicone , Silicone, RTV, Encapsulation Grade
Manufacturer Momentive Performance Materials (Former GE Silicones)
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Momentive Performance Materials RTV656 Clear Extreme Low Temperature Potting/Encapsulating Compound.pdf
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Material Notes:
Two-part addition cure. Two-part addition cure RTV silicones can be cured very quickly with the use of high heat. Addition cure products have no cure by-products and can be used to unlimited depths. Typical uses: Aerospace potting, bonding, and sealing where extended low temp performance is needed.Data provided by the manufacturer, GE Silicones.GE Silicones became a part of Momentive Performance Materials in 2006.
Physical Properties Metric English Comments
Density 1.02 g/cc
0.0368 lb/in³
Viscosity 4000 cP

@Temperature 25.0 °C
4000 cP

@Temperature 77.0 °F
Mechanical Properties Metric English Comments
Hardness, Shore A 44
44
Tensile Strength, Ultimate 6.37 MPa
924 psi
Elongation at Break 160 %
160 %
Thermal Properties Metric English Comments
CTE, linear 270 µm/m-°C

@Temperature 20.0 °C
150 µin/in-°F

@Temperature 68.0 °F
Thermal Conductivity 0.190 W/m-K
1.32 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 204 °C
399 °F
Continuous useful temperature.
Minimum Service Temperature, Air -115 °C
-175 °F
Continuous useful temperature.
Optical Properties Metric English Comments
Refractive Index 1.406
1.406
Transmission, Visible 90 %
90 %
clear; thickness not quantified
Electrical Properties Metric English Comments
Electrical Resistivity 3.20e+15 ohm-cm
3.20e+15 ohm-cm
Dielectric Constant 2.89

@Frequency 1000 Hz
2.89

@Frequency 1000 Hz
Dielectric Strength 19.7 kV/mm

@Thickness 1.91 mm
500 kV/in

@Thickness 0.0750 in
Dissipation Factor 0.00040

@Frequency 1000 Hz
0.00040

@Frequency 1000 Hz
Processing Properties Metric English Comments
Processing Temperature 25.0 °C
77.0 °F
Cure time 4 hours.
Pot Life 240 min

@Temperature 25.0 °C
240 min

@Temperature 77.0 °F
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