ITW Insulcast® RTVS 3-95-1 Silicone Potting/Encapsulation Compound

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ITW Insulcast® RTVS 3-95-1 Silicone Potting/Encapsulation Compound
Categories:	Polymer; Thermoset; Silicone; Silicone, RTV, Encapsulation Grade
Material Notes:	Insulcast® solutions are compounds designed for potting and encapsulating. INSULCAST RTVS 3-95-1 is a low viscosity, thermally conductive RTV silicone compound, UL recognized under file E86165 for flame class 94V-0. Information provided by ITW Performance Polymers.
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Physical Properties	Metric	English	Comments

Specific Gravity	0.960 g/cc	0.960 g/cc	Uncured. Part B
	2.35 g/cc	2.35 g/cc	Uncured. Part A
Viscosity	1000 cP	1000 cP	Uncured. Part B; ASTM D2393
	10000 cP	10000 cP	Mixed, Part A, Part B; ASTM D2393
	15000 cP	15000 cP	Part A; ASTM D2393

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	65	65	ASTM D2240
Tensile Strength	3.28 MPa	475 psi	ASTM D412
Elongation at Break	45 %	45 %	ASTM D412
Tear Strength	2.63 kN/m	15.0 pli	Die B; ASTM D624

Electrical Properties	Metric	English	Comments
Volume Resistivity	5.00e+14 ohm-cm	5.00e+14 ohm-cm	ASTM D257
Dielectric Constant	5.0 @Frequency 1000 Hz	5.0 @Frequency 1000 Hz	ASTM D150
Dielectric Strength	19.7 kV/mm	500 kV/in	ASTM D149
Dissipation Factor	0.0050 @Frequency 1000 Hz	0.0050 @Frequency 1000 Hz	ASTM D150

Thermal Properties	Metric	English	Comments
CTE, linear	180 µm/m-°C	100 µin/in-°F
Thermal Conductivity	1.25 W/m-K	8.68 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	260 °C	500 °F
Minimum Service Temperature, Air	-55.0 °C	-67.0 °F
Flammability, UL94	V-0	V-0

Processing Properties	Metric	English	Comments
Cure Time	15.0 min @Temperature 125 °C	0.250 hour @Temperature 257 °F	option
	60.0 min @Temperature 90.0 °C	1.00 hour @Temperature 194 °F	option
	240 min @Temperature 50.0 °C	4.00 hour @Temperature 122 °F	option
	1440 min @Temperature 25.0 °C	24.0 hour @Temperature 77.0 °F	option
Pot Life	90.0 min @Temperature 25.0 °C	90.0 min @Temperature 77.0 °F	Part A. 100 g
	90.0 min @Temperature 25.0 °C	90.0 min @Temperature 77.0 °F	Part B. 100g
Shelf Life	12.0 Month	12.0 Month	Part A
	12.0 Month	12.0 Month	Part B

Descriptive Properties
Color	clear		part B, uncured
	red		part A, uncured
Mix Ratio by weight	100:5		Part A: Part B

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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