• A thixotropic, one-part, ultra-clear optical grease comprised of an optical grade fluid immobilized in a nanoparticle powder
  • Flows under pressure but non-slumping at rest
  • Low modulus
  • Non-curing
  • 1.46 refractive index for matching silica
  • Supplied in syringes for ease of dispensing
  • Container options are available for use with automated dispensing equipment


  • Coupling of silica telecom fiber splices, polymer waveguide/backplane connections, Vertical-Cavity Surface-Emitting Laser (VCSEL) coupling to fiber and a variety of other optics applications
  • Optically clear matrix

Product Details

Property Average Result
Specific Gravity 1.1
Appearance Clear
Refractive Index 1.46

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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.