CHT AS1621 RTV, silicone adhesive sealant

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CHT AS1621 RTV, silicone adhesive sealant
Categories:	Polymer; Thermoset; Silicone; Silicone, RTV, Adhesive/Sealant Grade
Material Notes:	Description: This is a 1-part, RTV (Room Temperature Vulcanizing) silicone adhesive sealant. It is one in a range of Oxime cure products which are solvent free. It exhibits good primerless adhesion to many substrates especially plastics and cures rapidly at room temperature when in contact with atmospheric moisture. This product can be described as low corrosive but would not be recommended for use with copper or its associated alloys. Key Features Excellent flow and self leveling properties Low corrosion Good adhesion to substrates Application: Applications include but are not limited to screen printed gaskets automotive Cured Product: 7 days at 23+/-2°C and 50+/-5% humidity Information provided by CHT Group
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Physical Properties	Metric	English	Comments

Density	1.05 g/cc	0.0379 lb/in³	BS ISO 2781
Brookfield Viscosity	24000 cP	24000 cP	Mixed
Linear Mold Shrinkage	0.010 cm/cm	0.010 in/in
Storage Temperature	<= 40.0 °C	<= 104 °F

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	24	24	ASTM D2240-95
Tensile Strength	2.00 MPa	290 psi	ISO 37
Elongation at Break	410 %	410 %	ISO 37
Tensile Modulus	0.000558 GPa	0.0810 ksi	Young's
100% Modulus	0.359 MPa	52.0 psi
Tear Strength	3.33 kN/m	19.0 pli	BS ISO 34-1

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.00e+16 ohm-cm	1.00e+16 ohm-cm	ASTM D-257
Dielectric Constant	2.6	2.6	ASTM D-150
Dielectric Strength	>= 18.0 kV/mm	>= 457 kV/in	ASTM D-149
Dissipation Factor	0.0010	0.0010	ASTM D-150

Thermal Properties	Metric	English	Comments
CTE, linear	306 µm/m-°C	170 µin/in-°F
Thermal Conductivity	0.200 W/m-K	1.39 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	230 °C	446 °F
Minimum Service Temperature, Air	-50.0 °C	-58.0 °F

Processing Properties	Metric	English	Comments
Cure Time	19.0 min	0.317 hour	Tack Free Time / Skin Formation
	<= 1440 min @Temperature 23.0 °C	<= 24.0 hour @Temperature 73.4 °F	3mm Depth
Shelf Life	12.0 Month	12.0 Month

Descriptive Properties
Appearance	Viscous liquid
Color	White
Cure type	Oxime
Rheology	Flowable
Volume Coefficient of Thermal Expansion	920 ppm/°C

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PCHTSIL017 / 314500

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