silicone coating being poured onto a surface

Coatings & dispersions

Silicone coatings and dispersions for protection in power electronics and biocompatibility in medical devices

NuSil® coatings and dispersions from Avantor® create and protect critical parts or technologies for a wide range of applications in the healthcare, space, aviation, defense, optoelectronics and electronics industries.

NuSil silicone coatings and dispersions are elastomers dispersed in a solvent for ease of application. They can be applied in very thin layers to evenly coat a device or surface or used to create a film or thin-walled part with strong elastomeric properties.

NuSil’s broad range of silicone coatings and dispersions offer numerous options to accommodate processing requirements and functional properties:  

  • One-part or two-part coatings: Our coatings are available as a one-part formulation with no mixing required or two-part configuration offering a longer work time.  
  • Solvent-based or solventless coatings: Solvent-based coatings are ideal for processes where the silicone is applied as a thin film coating. Solvent-less coatings are non-flammable and do not require controlled environments for handling.
  • Special features: NuSil coating options include hydrocarbon-resistance, lubrication, low coefficient of friction and high clarity formulations.

Custom formulations tailored to your needs

NuSil has the expertise, processes, and proprietary technology to customize our silicones based on your unique specifications. We leverage our insight into the unique silicone chemistry and material properties to supply off-the-shelf and custom formulations tailored to your process and end-application performance requirements.

Learn more about how we can help you get the products you need.

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Interior NuSil silicone production technology

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Medical implants

For long term implanted devices (>29 days) NuSil silicone coatings and dispersions are ideal for dipping and spraying processes that produce thin elastomeric films or forms.

infant with silicone airway device

General healthcare

Our portfolio of medical-grade coatings and dispersions offer solutions for devices implanted in the body for < 29 days, such as balloons or external devices like needles.

Curiosity Mars rover incorporating silicone protective materials


Our space-grade coatings protect against atomic oxygen (AO) while providing resistance to radiation and are used on a variety of spacecraft surfaces and small electronic components.

military aircraft in flight

Aviation & defense

NuSil coatings feature fuel and heat-resistant properties that protect critical technology in missiles, rockets, launch equipment and unmanned aerial vehicles.

Children using large electronics display

Optoelectronics & electronics

From extending the operating life of circuit boards to providing stability for elastomers, our conformal coatings protect sensitive elements from moisture, contaminants, shock and temperature extremes.

Related content

Browse additional resources related to silicone conformal coatings.


Tensile, tear & elongation



Conformal coatings

The NuSil® brand of silicone conformal coatings efficiently and reliably protects electronic components and helps ensure long operating life. Let us put our silicone expertise to work for you.

Customer support

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Ready to move your next innovation forward? NuSil can help.

How can we help you?

Our experienced team will identify or develop the best solution for your application, whether you need a sprayable silicone dispersion or a heat-resistant coating technology.

Avantor®, a Fortune 500 company, is a leading global provider of mission-critical products and services to customers in the biopharma, healthcare, education & government, and advanced technologies & applied materials industries. Our portfolio is used in virtually every stage of the most important research, development and production activities in the industries we serve. Our global footprint enables us to serve more than 300,000 customer locations and gives us extensive access to research laboratories and scientists in more than 180 countries. We set science in motion to create a better world.