Polymer Systems
Technology Limited

Advanced Engineering



Potting and Encapsulating Elastomers


  • Two part, Black, 1:1 Mix ratio (A:B)
  • Pourable and self-leveling
  • Cures at room temperature
  • Tested per UL-94 and passed V-0
  • Thermally stable, flowable material that cures at room temperature
  • Low viscosity allows the potting of complex geometries without the entrapment of air
  • Quick set-up and flexible cure schedule
  • Applications include: potting for connectors, sensors, relays, power devices and other electronic components requiring protection from vibration and generally harsh environmental conditions
Typical PropertiesAverage Result
Appearance, Part ABlack
Appearance, Part BOff White
Appearance, MixedBlack
Viscosity, Part A 2,700 cP
Viscosity, Part B1,500 cP
Work Time1 hour minimum
Cured: 60 minutes at 150°C (302°F)
Durometer, Type A50
Tensile Strength525 psi (3.5 MPa)
Elongation130 %
Moisture Absorption, % gain after 168 hours of exposure0.03%
Glass Transition Temperature (Tg) *-53°C (-63.4°F)
Coefficient of Linear Expansion (-150°C to -70°C)*142 ppm/°C (142 ?m/m°C)
Coefficient of Linear Expansion (-40°C to 250°C)*247 ppm/°C (247 ?m/m°C)
Thermal Conductivity0.40 W/mK
Volume Resistivity*4.3 X 1013 ohm cm
Dielectric Constant, 100 Hz*3.3
Dielectric Constant, 100 kHz*2.85
Dissipation Factor, 100 Hz*0.002
Dissipation Factor, 100 kHz*0.001
Dielectric Strength*580 V/ml (22.6 kV/mm)
Tested per UL-94 (4.5 mm nominal thickness) *Passed V-0
Cured: 24 hours minimum at ambient temperature and humidity
Durometer, Type A50

*These properties NOT tested on a lot-to-lot basis. Please contact NuSil Technology for assistance and recommendations in establishing particular specifications.

Recommended Primers CF2-135 or SP-120

Note: Some bonding applications may require the use of a primer.
CF2-135 is recommended for most metallic substrates, some plastics and when cure inhibition is observed on substrate.
In general, SP-120 is recommended for use with 100% Fluorosilicones.


50 mL Side-by-Side Kit
200 mL Side-by-Side Kit
2 Pint Kit (910 Gram)
2 Gallon Kit (7.28 kg)
10 Gallon Kit (36.4 kg)


6 Months

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