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liquid silicone rubbers lifesciences generalhealthcare

Class VI





  • Two-part, translucent silicone system designed for use with injection molding equipment
  • Rapid cure with no post-cure required
  • 1:1 Mix Ratio (Part A: Part B)


  • For the injection molding of parts requiring a material with a high durometer including: molded rubber stoppers, gaskets, seals, valves, o-rings and other precision parts
  • Suitable for over-molding applications
  • Can be used with NuSil’s Healthcare color masterbatches for applications requiring colored silicones

NuSil Technology’s SIL-5960 shall not be considered for use in human implantation for a period of greater than 29 days.

Regulatory Support
NuSil Technology’s Class VI (C6) products meet the requirements defined in ISO-10993 for Surface Devices with “limited” (<24 hours) or “prolonged” (1 to 30 days) contact duration.
After post-cure, material meets or exceeds the extraction requirements for FDA regulation 21 CFR 177.2600 “Rubber Articles Intended for Repeated Use (Food Contact)

Product Details

Property Average result
Tear 200 ppi
Elongation 425 %
Tensile 1,300 psi
Durometer 60 Type A
Appearance Translucent
Cure 5 minutes / 165 °C
Cure Rate Scorch 0.1 minutes
Cure Rate T10 0.11 minutes
Cure Rate T90 0.5 minutes
Cure System Platinum
Extrusion Rate 70 g/minute
Mix Ratio 1:1
Specific Gravity 1.14
Stress @ Strain 700 psi / 200 %
Work Time >72 hours
Comment Designed for High Volume Injection Molding
Display in metric units

The above properties are tested on a lot-to-lot basis. Do not use as a basis for preparing specifications. Please contact NuSil Technology for assistance and recommendations in establishing particular specifications.

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