High-purity silicones

The most extreme environments.
The purest solutions.

NuSil® ultra-high-purity silicone materials are engineered to serve the needs of healthcare and advanced technologies manufacturers. Our industry-leading portfolio includes a full range of products, from adhesives to elastomers to fluids.

  • Healthcare - We formulate medical-grade silicone solutions to help protect the health and well-being of people across the globe. Customers rely on our deep industry and regulatory expertise to accelerate breakthroughs for drug delivery, medical devices and beauty care.
  • Advanced technologies - From the palm of your hand to the far reaches of outer space, NuSil sets the global standard for advanced purity and quality in the most demanding environments. Our highly engineered, customizable silicone products offer high-performance reliability to space, aviation, defense, electronics and optoelectronics manufacturers.

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swatches of silicone color masterbatches


NuSil offers a wide range of biocompatible silicone additives to enhance silicone elastomers with color pigmenting, radiopacity, or foam-like features.

applying silicone adhesive to a surface

Adhesives & sealants

We help accelerate the assembly process with next-generation silicone adhesives and sealants that increase throughput, so products can go to market faster.  

pouring a silicone coating onto a surface

Coatings & dispersions

We formulate silicone coatings and dispersions to withstand extreme conditions, from the thin walls of a medical balloon implanted in the body to the surface of a spacecraft.

Conductive materials

From aiding in the transfer of heat to carrying a current or safely dissipating static, NuSil silicones can be used for applications like heat sinks and electric bridges as well as EMI and RFI shielding.

cutting silicone block


Our industry-leading portfolio of high consistency rubbers (HCRs), liquid silicone rubbers (LSRs) and low viscosity elastomers (LVEs) offer the quality and versatility to serve a range of applications, including tubing and molded components.

clear tubing marked with silicone-compatible ink


Our high-purity, silicone-compatible inks are used to add markings, instructions or branding to a product and are available in a wide range of colors.

silicone lubricant being poured into a container


To minimize friction on moving or sliding parts, we offer a range of lubricious silicones, from fluids to dispersions, that can be customized for lubricity, substrate compatibility and performance characteristics.

Polymers & catalysts

NuSil’s line of specialty functional polymers and curing components enable manufacturers to formulate high-purity reproducible finished systems.

Potting & encapsulating materials

In sensors and electronics, our potting and encapsulating silicones conform to complex geometries and protect sensitive components against thermal cycling, shock and contaminants.

material attached to surface prepared with silicone primer


NuSil primers promote adhesion when using a silicone adhesive with non-binding substrates, including metals, rigid plastics and other silicones.


High-purity simethicones are available in the form of liquid or powder and are ideal for anti-gas and anti-acid agents. They can also be used as an anti-foam in pharmaceutical processing.

jars containing skin care ingredients

Skin care ingredients

We provide a diverse line of uniquely formulated silicones for transformative skin care formulations. Our CareSil® line of encapsulated silicones, suspended silicones, elastomer gels and gum blends are manufactured to the highest quality standards.

Customization mastered

No matter what kind of silicone product you are formulating, NuSil has the expertise, processes and proprietary technology to customize our silicone polymers and catalysts based on your unique specifications. We leverage our insight into the unique silicone chemistry and material properties to supply both off-the-shelf and custom formulations tailored to your process and end application performance requirements.

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Interior NuSil silicone production technology

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

How can we help you?

NuSil’s experienced team will help you identify the right high-purity silicone for your application.

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. One of our greatest strengths comes from having a global infrastructure that is strategically located to support the needs of our customers. Our global footprint enables us to serve more than 225,000 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.