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	Original Value	Comments

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

Mechanical Properties	Original Value	Comments
Hardness, Shore A	55	cured
Tensile Strength	400 psi	cured
Elongation at Break	100 %	cured
Tear Strength	3.51 kN/m	die B

Electrical Properties	Original Value	Comments
Volume Resistivity	1.00e+15 ohm-cm	cured
Dielectric Constant	3.2 @Frequency 100 Hz	cured
Dielectric Strength	450 V/mil	cured
Dissipation Factor	0.0050 @Frequency 100 Hz	cured

Thermal Properties	Original Value	Comments
Thermal Conductivity	0.360 W/m-K	cured
Maximum Service Temperature, Air	205 °C	cured
Minimum Service Temperature, Air	-55.0 °C
Flammability, UL94	V-0

Processing Properties	Original Value	Comments
Cure Time	0.750 hour @Temperature 65.0 °C
Pot Life	15.0 min @Temperature 25.0 °C
Shelf Life	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

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PLORD9280 / 232636

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