Polymer Systems
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Advanced Engineering



Thermally Conductive

Thermally Conductive Controlled Volatility Silicone

  • Two-part, gray, thermally conductive silicone
  • Based on a dimethyl silicone polymer
  • Uses a platinum-catalyzed addition cure
  • 20:1 Mix Ratio (Part A:B)
  • For applications requiring low outgassing and minimal volatile condensables under extreme operating conditions to avoid condensation in sensitive devices
  • To provide moderate heat transfer between electrical/electronic components and their heat sinks
  • Use to adhere openings in modules or housings where grooves and other configurations require a non-flowable to limited flow material
Typical PropertiesAverage Result
Work Time*2.5 hours
Tack-Free Time*4.0 hours
Cured: 24 hours minimum at ambient temp. and humidity, then 15 minutes at 150°C (302°F)
Specific Gravity*2.4
Durometer, Type A*85
Tensile Strength*650 psi (4.5 MPa)
Tear Strength*55 ppi (9.70 kN/m)
Lap Shear Strength* (primed w/ CF1-135)375 psi (2.6 MPa)
Thermal Conductivity*0.999 W/(mK)(24 x 10-4 cal/(cm sec°C))
Dielectric Strength430 volts/mil (16.9 kV/mm)
Volume Resistivity1.4 x 1014 ohm cm
TGA Take-Off (1% wt. Loss, 10°C/min. in air)330°C (626°F)
Coefficient of Linear Thermal Expansion
Below Tg (-100°C to -50°C)130 ppm/°C (130µm/m/°C)
Above Tg (-30°C to 250°C)185 ppm/°C (185µm/m/°C)
Collected Volatile Condensable Material (CVCM)*0.01%
Total Mass Loss (TML)*0.09%

*Properties tested on a lot-to-lot basis. Do not use the properties shown in this technical profile as a basis for preparing specifications. Please contact NuSil Technology for assistance and recommendations in establishing particular specifications.

Recommended Primer CF1-135

Note: Some bonding applications may require the use of a primer.


100 Gram Kit
250 Gram Kit
500 Gram Kit
1 Kilogram Kit


12 Months

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