Founded in 1979, Avantor’s NuSil brand has set the global standard in medical- and space-grade silicones, advancing purity and quality while redefining expectations in customer care. From the beginning, our mission has been to design silicone formulations to meet our customers’ requirements and provide the support needed in these highly regulated industries.

We have unsurpassed insight into the unique performance characteristics high-purity silicone formulations offer. As a result of decades of successful product development and close customer collaboration, we have expanded our offering to address all facets of biomaterials and advanced technologies, with both standard and custom solutions.


The conditions within the human body require materials engineered and tested to provide the highest levels of purity and long-term stability. With an unwavering commitment spanning over 40 years, the NuSil brand has been continuously supplying that level of quality. Our market-leading, medical-grade silicones for use in the body, on the body or in contact with the body are trusted for a wide range of medical devices that help save and improve the quality of life.

  • Medical implants

Leading medical device manufacturers and innovative startups worldwide depend on the quality, purity and reliability of our implantable silicones to help solve unique challenges for crucial medical applications.

  • General healthcare

Our deep experience in silicones for medical implants enables us to offer custom and standard materials for use in devices and components for medical diagnostics, therapy and care.

  • Drug delivery

We contribute to changing the world of drug delivery by harnessing the power of silicone. We help create revolutionary combination devices with sustained release of critical medications to patients.


We have assisted medical device companies in obtaining regulatory clearance for their products for decades. Our commitment extends well beyond the sale of our silicones. We provide the technical and regulatory expertise needed for approval and are willing to communicate directly with international regulatory bodies on  behalf of our customers. We maintain over 700 Master Files (MAFs) with the U.S. Food & Drug Administration (FDA) in support of our medical-grade silicones.