Urethane Materials
The materials that can be cast in a silicone rubber mold are two-part polyurethane or a silicone rubber. Typically urethane is used due to the availability of a wide range of material properties. Material Properties used to select the Urethane Casting Material to be used:
  • Hardness from 10 shore A to 80 shore D
  • Rigidity
  • Impact Strength
  • Heat Deflection temperature
  • UL Rating
  • FDA Approved
  • Color desired (some urethanes has a base color which affects using it to make white or light colored parts). Clear materials can also be specified.






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