ITW Insulcast® RTVS 51 Silicone Potting/Encapsulation Compound

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ITW Insulcast® RTVS 51 Silicone Potting/Encapsulation Compound
Categories:	Polymer; Thermoset; Silicone; Silicone, RTV, Encapsulation Grade
Material Notes:	Insulcast® solutions are compounds designed for potting and encapsulating. RTVS 51 is a low temperature flexible, easily pourable methyl phenyl RTV Silicone sealant/ encapsulate. The RTVS 51 can be used with a wide variety of curing agents, thus varying pot life, cure time, mix ratios and cure conditions. Information provided by ITW Performance Polymers.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.25 g/cc	1.25 g/cc	uncured
Viscosity	12000 cP	12000 cP	Uncured; ASTM D1084

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	50	50	ASTM D2240
Tensile Strength	2.62 MPa	380 psi	ASTM D412
Elongation at Break	170 %	170 %	ASTM D412
Tear Strength	4.38 kN/m	25.0 pli	Die B; ASTM D624

Electrical Properties	Metric	English	Comments
Volume Resistivity	2.00e+14 ohm-cm	2.00e+14 ohm-cm	ASTM D257
Dielectric Constant	3.6 @Frequency 1000 Hz	3.6 @Frequency 1000 Hz	ASTM D150
Dielectric Strength	20.5 kV/mm	520 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	220 µm/m-°C	122 µin/in-°F
Thermal Conductivity	0.0259 W/m-K	0.180 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	232 °C	450 °F
Minimum Service Temperature, Air	-115 °C	-175 °F
Shrinkage	0.20 - 0.60 %	0.20 - 0.60 %

Processing Properties	Metric	English	Comments
Pot Life	15.0 - 120 min	15.0 - 120 min	varies w/% of CAT 2
Shelf Life	6.00 Month	6.00 Month

Descriptive Properties
Color	buff or white		uncured
Mix Ratio by weight	0.1: 0.5		w/CAT-2 (DBT)

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PITWIN9123 / 239633

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