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UV Cure Silicone Rubber


UV cure silicone rubber belongs to a new class of rubber that offers high cure speed at low temperatures.  UV light initiates crosslinking through a photochemical reaction rather than heat.  This rubber can be processed via injection molding with special molds, or via extrusion without additional heat to cure.

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Silicone Elastomers for Healthcare

More About UV Cure Silicone Rubber

Silopren* UV liquid silicone rubbers (LSR) are two-component liquid silicone rubbers with a mixing ratio of 100:2. They can be molded quickly at low temperatures using a typical injection molding process with UV light.  Cross sections of 5-100 mm can easily be cured in very short cycle times.  Addisil* UV EX silicone rubber is a two-component extrusion material that offers high cure speed at room temperature. Addisil UV EX silicone rubber can be extruded with standard silicone rubber extruders and cured with UV light.


Key Features and Typical Benefits of UV Cure Silicone Rubbers:

  • Biocompatibility (USP Class VI, ISO10993)
  • Combinable with low temperature substrates and additives
  • May provide energy savings due to lower temperature processing
  • Can cure thick cross sections at reduced cycle times vs. conventional molding processes
  • Can cure thick cross sections without microbubbles
  • Allows overmold onto temperature sensitive electronics


Potential Applications:

  • IV components
  • Wearable electronics
  • Catheters, Drains, and tubing
  • Hard-soft material combinations
  • Pharmaceutical and laboratory stoppers


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*The marks followed by an asterisk (*) are trademarks of Momentive Performance Materials Inc.