• 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 (3,125 mPa*s)
Durometer 50 Type A
Tensile 850 psi (5.86 MPa)
Elongation 90 %
Appearance Clear
Cure 15 minutes / 150 °C
Dielectric Strength 520 volts/mil (20.28 kV/mm)
Ionic Content Cl <5 ppm
Ionic Content K <2 ppm
Ionic Content Na <4 ppm
Lap Shear 200 psi (1.38 MPa)
Mix Ratio 1:1
Refractive Index 1.40
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

Contact NuSil™ to Order Now

For over 40 years, the NuSil brand has offered a wide range of high-purity silicones. Our team is ready to collaborate with you to provide silicone solutions to satisfy your unique requirements. For additional guidance during your selection process, or to order a sample, contact NuSil today.

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The test data shown for this material is the average value for typical properties. All of these properties may not be tested on a lot to lot basis and cannot be used to draft specifications. Please contact NuSil for assistance and recommendations in establishing limits for product specifications.