• A two-part, encapsulation gel
  • Extended work time
  • 1.46 refractive index for matching silica
  • 1:1 Mix Ratio (Part A:B)


  • For protection of sensitive photonics assemblies from mechanical shock, thermal shock, dust, and ambient atmosphere
  • Extended work time allows voids in complex assemblies to fill in and permits time for any trapped air bubbles to float to the fluid surface and escape
  • For applications requiring an operating temperature range of -40°C to 200°C
  • (-40°F to 392°F) or for soldering operations up to 260°C (500°F) for 1 to 2 minutes

Product Details

Property Average Result
Viscosity 1,000 cP (1,000 mPa*s)
Work Time 8 hours
Appearance Clear
Cure 1 minutes / 65 °C
Cure System Platinum
Durometer 10 Type 00
Mix Ratio 1:1
Operating Temperature -40 °C / 200 °C
Refractive Index 1.46
Specific Gravity 1.04
Comment Firm Gel;Index Matches 1.46 RI such as fused silica. Will RTV within 24 hrs. 5 hr. minimum potlife based on 2X initial viscosity.

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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.