Lord Adhesives Circalok™ 6716/6733 Silicone Resin System

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Lord Adhesives Circalok™ 6716/6733 Silicone Resin System
Categories:	Polymer; Thermoset; Silicone; Silicone, RTV, Encapsulation Grade
Material Notes:	LORD Circalok™ 6716/6733 silicone system is a two-component, solvent-free RTV silicone system ideal for potting and encapsulating product for both low- and high-voltage electrical and electronic assemblies. Features: exhibits low shrinkage and stress on components as it cures. room temperature curing formulation is not subject to hardener poisoning. cured system provides excellent electrical and thermal conductivity. cures in deep sections without exotherm. can be used on parts and devices that experience operating temperatures from -60°C to +205°C. All information provided by Lord.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.40 g/cc @Temperature 25.0 °C	1.40 g/cc @Temperature 77.0 °F
Viscosity	10000 cP @Temperature 25.0 °C	10000 cP @Temperature 77.0 °F

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	45	45	cured
Tensile Strength	0.965 MPa @Temperature 25.0 °C	140 psi @Temperature 77.0 °F	cured
Elongation at Break	200 %	200 %	cured

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.00e+15 ohm-cm @Temperature 25.0 °C	1.00e+15 ohm-cm @Temperature 77.0 °F	cured
Dielectric Constant	3.5 @Temperature 25.0 °C	3.5 @Temperature 77.0 °F	cured
Dielectric Strength	19.7 - 21.7 kV/mm	500 - 550 kV/in	cured
Dissipation Factor	0.010 @Temperature 25.0 °C	0.010 @Temperature 77.0 °F	cured

Thermal Properties	Metric	English	Comments
CTE, linear	110 µm/m-°C	61.1 µin/in-°F	cured
Thermal Conductivity	0.300 W/m-K	2.08 BTU-in/hr-ft²-°F	cured
Maximum Service Temperature, Air	205 °C	401 °F
Minimum Service Temperature, Air	-60.0 °C	-76.0 °F

Processing Properties	Metric	English	Comments
Cure Time	720 - 960 min @Temperature 25.0 °C	12.0 - 16.0 hour @Temperature 77.0 °F
Working Life	45.0 min @Temperature 25.0 °C	45.0 min @Temperature 77.0 °F	Mixed
Shelf Life	6.00 Month @Temperature 25.0 °C	6.00 Month @Temperature 77.0 °F	each component from date of manufacture

Descriptive Properties
Appearance	Black Liquid
Mix Ratio	100 to 2.5		by weight, resin to hardener

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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PLORD9278 / 232634

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