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AEROSIL® fumed silica - beneficial for mechanical properties


Pass every test with AEROSIL® fumed silica


The use of AEROSIL® fumed silica as a reinforcing filler improves mechanical properties such as tensile strength, elongation at break and tear resistance in silicone components.
  • Tensile strength

  • Elongation at break

  • Tear resistance

  • Hardness

  • Rebound resilience

  • Compression set

The use of AEROSIL® fumed silica as a reinforcing filler improves mechanical properties such as tensile strength, elongation at break and tear resistance in silicone components.

AEROSIL® fumed silica - a strong case
The use of AEROSIL® fumed silica as a reinforcing filler improves mechanical properties, for example in various sports articles made of HCR or LSR silicone rubber.

The use of AEROSIL® fumed silica as a reinforcing filler improves mechanical properties, for example in various sports articles made of HCR or LSR silicone rubber.
AEROSIL® products can also help to control the temperature dependence of mechanical properties.


In addition to the fumed silica of the AEROSIL® product range, Evonik offers special precipitated silica products as reinforcing fillers for silicone rubber. These specialty silica products are marketed under the product name SIPERNAT® and significantly improve the dynamic properties (compression set) of important silicone products such as O-rings., keypads and shoe soles.

Further information about our SIPERNAT® products:

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