Premium Care Line




  • Two-part, high tear strength silicone elastomer
  • Cures with heat via addition-cure chemistry
  • Has a non-tacky surface and no volatile by-products or peroxide residues
  • Strained through a 400-mesh screen (minimum)
  • 1:1 Mix Ratio (Part A: Part B)


  • For a wide variety of fabrication techniques for the healthcare industry including: molding, calendering and extruding
NuSil Technology’s MED-4020 shall not be considered for use in human implantation for a period of greater than 29 days.

Product Details

Property Average Result
Durometer 25 Type A
Tensile 1,400 psi (9.66 MPa)
Elongation 1,250 %
Tear 190 ppi (33.51 kN/m)
Appearance Translucent
Cure 10 minutes / 116 °C
Cure Rate Scorch 0.95 minutes
Cure Rate T90 2.3 minutes
Cure System Platinum
Mix Ratio 1:1
Specific Gravity 1.1
Stress at Strain 75 psi / 200 % (0.52 MPa / 200 %)
Work Time 10 hours
Comment Low modulus with high tear

The Strongest Silicone Elastomer Ever Developed

Dr. Jim Lambert, NuSil® Director of Research and Development, Biomaterials, introduces our breakthrough material that has a tensile strength of up to 50% greater than existing silicone elastomers on the market.

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.