• Solvent-free, low viscosity, clear, two-part silicone elastomer
  • Accelerated cure rate with heat
  • Based on a dimethyl diphenyl silicone copolymer
  • 10:1 Mix Ratio (Part A:B)


  • For bonding, casting or injection molding of high performance optical components
  • For applications requiring index matching at 1.43
  • For applications requiring an operating temperature range of -115 to 260°C (–175 to 500°F)

Product Details

Property Average Result
Cure System Platinum
Viscosity 5,400 cP (5,400 mPa*s)
Durometer 40 Type A
Tensile 900 psi (6.21 MPa)
Elongation 120 %
Appearance Clear
Cure 60 minutes / 60 °C
Mix Ratio 10:1
Operating Temperature -115 °C / 260 °C
Refractive Index 1.43
Specific Gravity 1.03
Comment 1.43 Refractive Index at 589nm. For applications requiring a broader operating temperature range.

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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.