• Two-part, flowable, red 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
  • As a sealing, caulking, adhesive or potting material in electronic and space applications where high vacuum environments are encountered
  • For bonding solar cells to solar array panels
  • 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 55,000 cP (55,000 mPa*s)
Lap Shear 500 psi (3.45 MPa)
Durometer 55 Type A
Appearance Rust Red
Cure 7 days / RTV
Dielectric Strength 825 volts/mil (32.18 kV/mm)
Elongation 150 %
Mix Ratio 100:0.5
Specific Gravity 1.49
Tack Free Time 8 hours
Tear 40 ppi (7.05 kN/m)
Tensile 950 psi (6.55 MPa)
Thermal Conductivity 0.27 W/(mK)
Work Time 3 hours
Comment Pourable RTV Cure, * 1 )Primed Lap Shear 500 psi (3.4 MPa)

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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.