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low viscosity elastomers advancedengineering electronics/optoelectronics




RTV; Low volatility


  • Two-part, optically clear silicone system
  • Based on a methyl silicone polymer
  • Low viscosity
  • 1:1 Mix Ratio (Part A:B)


  • For bonding, casting or injection molding of high performance optical components
  • For applications requiring index matching at 1.40
  • For photonics applications requiring low outgassing and minimal volatile condensables to avoid condensation in sensitive devices

Product Details

Property Average result
Cure System Platinum
Viscosity 3,125 cP
Durometer 50 Type A
Tensile 850 psi
Elongation 90 %
Appearance Transparent
Cte 400 ppm/°C
Cure 15 minutes / 150 °C
Dielectric Strength 520 volts/mil
Ionic Content Cl <5 ppm
Ionic Content K <2 ppm
Ionic Content Na <4 ppm
Lap Shear 200 psi
Mix Ratio 1:1
Refractive Index 1.4
Specific Gravity 1.02
Tack Free Time 6 hours
Volume Resistivity 1,100,000,000,000,000 ohmcm
Work Time 3 hours
Comment RTV; Low volatility
Display in metric units

The above properties are tested on a lot-to-lot basis. Do not use as a basis for preparing specifications. Please contact NuSil Technology for assistance and recommendations in establishing particular specifications.

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