• Two-part, flowable, white RTV silicone
  • 100:0.5 Mix Ratio (Base:Curing Agent)


  • For applications requiring low outgassing and minimal volatile condensables under extreme operating conditions to avoid condensation in sensitive devices
  • Use a sealing, caulking, adhesive or potting material in electronic and space applications where high vacuum environments are encountered
  • For applications requiring a broader operating temperature range
Meets or exceeds the ASTM E 595 low outgas specifications outlined in NASA SP-R-0022A and European Space Agency PSS-014-702, with a TML of ≤1% and CVCM of ≤0.1%

Product Details

Property Average Result
Cure System Alkoxy
Viscosity 45,000 cP (45,000 mPa*s)
Durometer 45 Type A
Appearance White
Cure 7 days / RTV
Elongation 200 %
Mix Ratio 100:0.5
Specific Gravity 1.19
Tack Free Time 9 hours
Tensile 600 psi (4.14 MPa)
Work Time 4 hours
Comment Low / High Temperature, Flowable

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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.