Innovative Silicone Films

WACKER silicone films are a revolutionary new, innovative development. This ultrathin, high-precision film of crosslinked silicone rubber is available as roll stock in various thicknesses from 20 to 400 μm, and is manufactured under cleanroom conditions entirely without solvents.

The maximum thickness variation across the film width is ±5%. This precision, combined with the proven properties of silicone rubber, opens up entirely new opportunities: it paves the way for applications that, until now, have been almost inconceivable, let alone realizable on an industrial scale.

The silicone film is available in two different forms:

  • ELASTOSIL® Film, for electroactive polymers (EAP)
  • SILPURAN® Film for medical applications

ELASTOSIL® Silicone Film is ideal for use as the high-precision dielectric layer in groundbreaking electronics applications based on so-called EAPs (electroactive polymers) – such as actuators, generators and smart sensors. For example, it can be used to make artificial muscles or valves that convert energy into motion.

Thanks to its the characteristic silicone properties, the film can also be used in smart textiles or power plants to extract energy from sea waves.


  • Good dielectric properties
  • High-precision (±5%)
  • High elastic recovery
  • Permanently elastic
  • Heat resistant and flexible at low temperatures
  • Selectively gas-permeable

ELASTOSIL® Film used as a dielectric medium

SILPURAN® Film from WACKER is an exceptionally skin-compatible, protective film made of crosslinked silicone rubber, specially developed for the health-care industry. Available in a variety of thicknesses (20 to 400 µm), this film is manufactured under cleanroom conditions using innovative production technology.

SILPURAN® is the perfect choice for manufacturing breathable, atraumatic wound dressings that provide optimum support for the healing process. This novel silicone film can also be used as a gas-permeable membrane in other medical devices, such as heart-lung machines. Its dielectric features are also interesting for use in medical technology: for example, in innovative prostheses, electroactive polymers (EAP) are used as artificial muscles that can not only make linear movements but also imitate natural forms of movement. Innovative EAP sensors can also be used for creating intelligent bandages.


  • Biocompatible and biodurable
  • Chemically stable
  • Heat-resistant
  • Flexible at low temperatures
  • Sterilizability
  • Permanently elastic
  • Permeable to gas and water vapor
  • Good dielectric properties

SILICONES – Definition and Properties

Find out more about silicones and their properties, as well as the variety of potential applications.

Find out more