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Silicones
RTV-849


RTV-849

Thermally Conductive Silicone
RTV-849 is a general purpose condensation cure RTV silicone rubber. RTV-849 has high heat and vibration resistance, as well as exceptional thermal conductivity. Major application areas include potting, high temperature molding, rollers, and print pads.





Specifications · Use Instructions

Specifications

Color

Clear (Part B)
Red (Part A)

Viscosity, cps

50000 (Part A)
100 (Part B)

Specific Gravity

0.98 (Part B)
2.2 (Part A)

Mix Ratio

100:5 (By Weight)

Mixed Viscosity

40000 cps

Shelf Life

6 months @ 72 °F

Durometer Hardness

73 (Shore A)

Tensile Strength

590 psi

Tensile Elongation

100 %

Tear Strength

25 ppi

Service Temperature Range

-54 to 260 ºC

Pot Life

45-60 minutes @ 72 °F

Coefficient of Thermal Expansion

68 x 106 (cm/cm-°C)

Dielectric Constant

4.7 (100 Hz)

Dissipation Factor

0.01 (60 Hz)

Volume Resistivity

1 x 1014 ohm-cm

Linear Shrinkage

0.06 %, After 3 days

Dielectric Strength

550 V/mil

Thermal Conductivity

9 BTU in/ft2 hr °F


Use Instructions
Pre-mix RTV-849 Base thoroughly. Weigh out the required amount and add the required amount of Catalyst. Mix thoroughly scraping both the bottom and sides of the mixing container. Evacuate the air and then apply.
Cure Schedule:
24 hours @ room temperature
Pot Life and cure is dependent on temperature & humidity.
Ideal conditions:
68-78°F (20-26°C)
40-60% relative humidity




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