Polymer Systems
Technology Limited

Advanced Engineering




Controlled Volatility Potting and Encapsulating Silicone Elastomer

  • Two-part, white silicone system
  • Offers a high tear strength, good physical properties and a broad operating temperature range
  • Convenient 1:1 mix ratio (Part A: Part B)
  • For applications requiring low outgassing and minimal volatile condensables under extreme operating conditions
  • To provide protection of electric components and assemblies against shock, vibration, moisture, dust, chemicals and other environmental hazards
  • Ideal for use in potting connectors, cable harness breakouts, molded high-voltage terminals, seals and gaskets due to its high tear strength
  • For use as an adhesive
  • For applications requiring a broader operating temperature range
Typical PropertiesAverage Result
Viscosity, Part A*60,000 cP (60,000 mPas)
Viscosity, Part B*40,000 cP (40,000 mPas)
Work Time*30 minutes
Tack-Free Time*4 hours
Cured: 15 minutes at 150°C (302°F)
Durometer, Type A*30
Tensile Strength*700 psi (4.8 MPa)
Lap Shear Strength* (primed w/ CF1-135) 400 psi (2.8 MPa) D1002 010
Young's Modulus325 psi (2.2 MPa)
Coefficient of Linear Thermal Expansion
Below Tg (-150°C to -115°C)60 ppm/°C (60 um/m/°C)
Above Tg (-95°C to 250°C)445 ppm/°C (445 um/m/°C)
Dielectric Strength955 volts/mil (37.6 kV/mm)
Thermal Conductivity0.230 W/(mK)(55 x 10-5 cal/(cm sec°C))
Dynamic Mechanical Analysis (DMA)See Attached Graph
Collected Volatile Condensable Material (CVCM)*0.04%
Total Mass Loss (TML)*0.44%

*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.


50 ml SxS Kit
500 Gram Kit


6 Months

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