Implant Line




  • A two-part, low viscosity, translucent silicone
  • Cures with heat via addition-cure chemistry
  • 1:1 Mix Ratio (Part A: Part B)


  • For use in potting, encapsulating, coating, and injection or transfer molding applications
NuSil Technology’s MED4-4420 may be considered for use in human implantation for a period of greater than 29 days.

Product Details

Property Average Result
Durometer 17 Type A
Viscosity 24,000 cP (24,000 mPa*s)
Work Time 35 minutes
Tensile 700 psi (4.83 MPa)
Appearance Translucent
Cure 15 minutes / 150 °C
Cure System Platinum
Elongation 600 %
Mix Ratio 1:1
Tear 35 ppi (6.17 kN/m)
Comment RTV

What is Medical Grade?

Discover how Medical-grade silicones are specifically designed, manufactured and purified to meet the strictest needs of the healthcare industry.

Read more

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.