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  • Two-part, ultra high properties 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
  • For applications requiring high physical properties and fatigue and abrasion resistance
NuSil Technology’s MED-4055 shall not be considered for use in human implantation for a period of greater than 29 days.

Product Details

Property Average Result
Durometer 55 Type A
Tensile 1,700 psi (11.72 MPa)
Elongation 900 %
Tear 300 ppi (52.91 kN/m)
Appearance Translucent
Cure 10 minutes / 138 °C
Cure Rate Scorch 1 minutes
Cure Rate T90 2.85 minutes
Cure System Platinum
Mix Ratio 1:1
Post Cure 4 hours / 177 °C
Special Feature
Specific Gravity 1.14
Stress at Strain 500 psi / 200 % (3.45 MPa / 200 %)
Work Time 2.5 hours
Comment Ultra-high tear strength

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.