Lord Adhesives Circalok™ 6744 A/B Silicone Rubber Compound

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Lord Adhesives Circalok™ 6744 A/B Silicone Rubber Compound
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber
Material Notes:	Circalok™ 6744 A/B is a low cost, low viscosity, flame retardant, room temperature curing silicone rubber compound. Circalok™ 6744 meets UL's 94V-0 rating in testing at LORD Laboratories. Mix ratio by weight or volume is 1 to 1. Cures at room temperature in less than 2 hours or at 65°C in a few minutes. All information provided by Lord.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.37 g/cc	1.37 g/cc	cured
Viscosity	2500 cP @Temperature 25.0 °C	2500 cP @Temperature 77.0 °F	Part B
	2700 cP @Temperature 25.0 °C	2700 cP @Temperature 77.0 °F	Mixed
	3000 cP @Temperature 25.0 °C	3000 cP @Temperature 77.0 °F	Part A
Linear Mold Shrinkage	0.0040 cm/cm	0.0040 in/in	cured

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	55	55	cured
Tensile Strength	2.76 MPa	400 psi	cured
Elongation at Break	100 %	100 %	cured
Tear Strength	3.51 kN/m	20.0 pli	die B

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.00e+15 ohm-cm	1.00e+15 ohm-cm	cured
Dielectric Constant	3.2 @Frequency 100 Hz	3.2 @Frequency 100 Hz	cured
Dielectric Strength	17.7 kV/mm	450 kV/in	cured
Dissipation Factor	0.0050 @Frequency 100 Hz	0.0050 @Frequency 100 Hz	cured

Thermal Properties	Metric	English	Comments
Thermal Conductivity	0.360 W/m-K	2.50 BTU-in/hr-ft²-°F	cured
Maximum Service Temperature, Air	205 °C	401 °F	cured
Minimum Service Temperature, Air	-55.0 °C	-67.0 °F
Flammability, UL94	V-0	V-0

Processing Properties	Metric	English	Comments
Cure Time	45.0 min @Temperature 65.0 °C	0.750 hour @Temperature 149 °F
Pot Life	15.0 min @Temperature 25.0 °C	15.0 min @Temperature 77.0 °F
Shelf Life	6.00 Month	6.00 Month	each component, from date of shipment in closed container

Descriptive Properties
Appearance	Black		Part A
	Grey		Mixed
	White		Part B
Mixed Appearance	100 to 100		A/B, by weight or by volume

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.

PLORD9280 / 232636

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