CHT Silcoset 105 Liquid silicone rubber

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CHT Silcoset 105 Liquid silicone rubber
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber; Liquid Silicone Rubber (LSR)
Material Notes:	Description: This is a two-part, pourable, liquid silicone rubber which; with the addition of a curing agent will cure at room temperature to form a resilient silicone rubber. It remains flexible over the temperature a wide temperature range. It possesses excellent weathering resistance, is resistant to oxidation and to many oils and chemicals and exhibits very good electrical properties. Silcoset® is approved under the UK Ministry of Defense Air Materials Specification DTD 900 Key Features UK MOD approved to DTD 900/4721 and AFS 1980 Flexible from -60°C/-76°F to +220°C/428°F Aerospace approved Good electrical isolation properties Application: General purpose potting compound Information provided by CHT Group
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Physical Properties	Metric	English	Comments

Density	1.10 g/cc	0.0397 lb/in³	B; BS ISO 2781
	1.19 g/cc	0.0430 lb/in³	Cured Product; BS ISO 2781
	1.37 g/cc	0.0495 lb/in³	A; BS ISO 2781
Linear Mold Shrinkage	0.0045 cm/cm	0.0045 in/in
Storage Temperature	<= 40.0 °C	<= 104 °F

Mechanical Properties	Metric	English	Comments
Tensile Strength	1.10 MPa	160 psi	ISO 37
Elongation at Break	175 %	175 %	ISO 37
100% Modulus	0.827 MPa	120 psi

Electrical Properties	Metric	English	Comments
Volume Resistivity	5.80e+13 ohm-cm	5.80e+13 ohm-cm	ASTM D-257
Dielectric Constant	3.5	3.5	ASTM D-150
Dielectric Strength	20.0 kV/mm	508 kV/in
Dissipation Factor	0.0050	0.0050	ASTM D-150

Thermal Properties	Metric	English	Comments
Thermal Conductivity	0.200 W/m-K	1.39 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	220 °C	428 °F
Minimum Service Temperature, Air	-50.0 °C	-58.0 °F

Processing Properties	Metric	English	Comments
Cure Time	420 min	7.00 hour	De-mould Time / Full Cure
Pot Life	50.0 min	50.0 min
Shelf Life	9.00 Month	9.00 Month

Descriptive Properties
Appearance	Condensation
Color	White
Hardness IRHD	45		BS ISO 48
Mix Ratio	100:1		By Weight
Rheology	Liquid

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PCHTSIL064 / 314547

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