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  • Two-part, white silicone system used with
  • injection molding equipmentCures with heat via addition-cure chemistry Designed to resist blocking on molded parts
  • caused by radiation sterilization1:1 Mix Ratio (Part A: Part B)


  • For the injection molding of parts requiring a material with a medium durometer including: molded rubber stoppers, gaskets, seals, valves, o-rings and other precision partsSuitable for over-molding applications
  • Can be used with NuSil’s Healthcare color masterbatches for applications requiring colored silicones
NuSil MED-4942 shall not be considered for use in human implantation for a period of greater than 29 days.

Product Details

Property Average Result
Durometer 40 Type A
Tensile 850 psi (5.86 MPa)
Elongation 350 %
Tear 130 ppi (22.93 kN/m)
Appearance White
Cure 10 minutes / 150 °C
Cure System Platinum
Mix Ratio 1:1
Specific Gravity 1.17
Work Time
Comment Injection Molding Elastomer, Resists Blocking

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.

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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.