Polymer Systems
Technology Limited

Advanced Engineering



Potting and Encapsulating Elastomers

Clear Silicone Potting Elastomer

  • Two part, Clear, 10:1 Mix ratio (A:B)
  • Pourable and self-leveling
  • Cures at room temperature
  • REACh and RoHS compliant
  • Tested per UL-94 and passed V-0
  • Good optical clarity allows for photonic coupling and visual inspection during component assembly
  • Low viscosity allows the potting of complex geometries without the entrapment of air
  • Superior UV and weathering resistance for protection of outdoor electronic components
  • Applications include: potting for optical sensors, components and various electronic devices
Typical PropertiesAverage Result
Appearance, Mixed Colorless
Viscosity, Part A 5,500 cP
Viscosity, Part B 125 cP
Mixed Viscosity 4,000 cP
Work Time (Pot Life)2 hour minimum
Cured: 10 minutes at 150°C (302°F)
Durometer, Type A 45
Tensile Strength 1,140 psi (7.9 MPa)
Elongation 150%
Tested per UL-94 (4.7 mm nominal thickness)*Passed V-0
Volume Resistivity 4 x 1014 Ohm cm
Thermal Conductivity 0.15 W/mK
Dielectric Constant, 100 Hz* 2.4
Dielectric Constant, 100 kHz* 2.3
Dissipation Factor 100 Hz* 0.0004
Dissipation Factor 100 kHz* 0.0008
Dielectric Strength 660 Volts/mil (25.8 kv/mm)
Glass Transition Temperature (Tg) -120°C
Coefficient of Thermal Expansion (-40°C to -250°C) 305µm/m°C
% Linear Shrink (1 hour at 90°C)* 1.5%
% Linear Shrink (1 hour at 110°C)* 2.0%
Recommended Cure Times based on 90% cure via ODRs **  
T90 at 90°C 50 minutes
T90 at 110°C 40 minutes

*These properties NOT tested on a lot-to-lot basis. 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.


37 mL Side-by-Side Kit
250 mL Side-by-Side Kit
500 Gram Kit
1 Gallon Kit (4.04 kg)
5 Gallon Kit (20.2 kg)
Drum Kit (198.5 kg)


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