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	Original Value	Comments

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

Mechanical Properties	Original Value	Comments
Hardness, Shore A	65	ASTM D2240
Tensile Strength	475 psi	ASTM D412
Elongation at Break	45 %	ASTM D412
Tear Strength	15.0 pli	Die B; ASTM D624

Electrical Properties	Original Value	Comments
Volume Resistivity	5.00e+14 ohm-cm	ASTM D257
Dielectric Constant	5.0 @Frequency 1000 Hz	ASTM D150
Dielectric Strength	500 V/mil	ASTM D149
Dissipation Factor	0.0050 @Frequency 1000 Hz	ASTM D150

Thermal Properties	Original Value	Comments
CTE, linear	180 µm/m-°C
Thermal Conductivity	1.25 W/m-K
Maximum Service Temperature, Air	260 °C
Minimum Service Temperature, Air	-55.0 °C
Flammability, UL94	V-0

Processing Properties	Original Value	Comments
Cure Time	0.250 hour @Temperature 125 °C	option
	1.00 hour @Temperature 90.0 °C	option
	4.00 hour @Temperature 50.0 °C	option
	24.0 hour @Temperature 25.0 °C	option
Pot Life	90.0 min @Temperature 25.0 °C	Part A. 100 g
	90.0 min @Temperature 25.0 °C	Part B. 100g
Shelf Life	12.0 Month	Part A
	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

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