What Are PFAS? Understanding Per- and Polyfluoroalkyl Substances
Let’s start with a bit of science. PFAS (Per- and Polyfluoroalkyl Substances) are a large family of over 10,000 synthetic compounds. They contain carbon chains where hydrogen atoms are fully or partially replaced by fluorine. This carbon-fluorine bond is one of the strongest in chemistry, making PFAS extremely resistant to breakdown over time.
Source (Europe): https://eeb.org/work-areas/industry-health/pfas/. Source (America): https://www.epa.gov/pfas/pfas-explained.
PFAS vs. Fluoropolymers: Key Differences
Short answer: Fluoropolymers are a subset of PFAS, but they differ significantly from smaller PFAS molecules in terms of size, behavior, and other considerations.
Feature | Small Chain PFAS | Long Chain PFAS (Fluoropolymers) |
Size | Small (4-12 carbon atoms) | Very large (100,000+ carbon atoms) |
Water Solubility | Soluble | Insoluble |
Regulatory Focus | High | Case-by-Case basis |
Example of Chemicals in this category | PFOA, PFOS | PTFE, ETFE, FEP |
This distinction is important because, while both small PFAS and fluoropolymers fall under the PFAS umbrella, their differences mean they present very different regulatory risks and considerations—helping customers and regulators make informed decisions about product stewardship and compliance.
Why PFAS are used in industrial applications
We use fluoropolymers in select products where their unique properties are essential to performance. These include:
- Low friction
- Chemical and water resistance
- High temperature tolerance
- Non-volatility
- Optical properties
- Chemical inertness
Replacing these materials is complex as there is no single substitute that offers identical performance. That’s why we focus on application-specific alternatives that balance functionality, compliance, and sustainability. In some cases, PTFE tapes remain the best option. In other applications, our PFAS-free* tape alternatives offer sufficient performance with added regulatory and environmental benefits.
What does PFAS-free* mean to us? Our definition and commitment
Our PFAS-free* designation means we do not intentionally add PFAS to our formulations during the manufacturing of the product. However, due to certain factors, trace amounts may be present as unintended impurities in the raw materials that we receive from our suppliers. The asterisk (*) reflects our commitment to transparency and scientific integrity, rather than making absolute claims that cannot be guaranteed or verified.
Explore our PFAS-free* alternatives: Adhesive tapes and EV gasketing solutions
We’re actively expanding our PFAS-free* portfolio to meet evolving regulations and customer needs. These include:
- Heat sealing tapes for food packaging and industrial use
- Composite molding solutions using alternative materials
- Surface protection and gasketing for EV and aerospace applications
- Automotive and Automotive Bonding applications
Ready to learn more?
Our R&D and manufacturing teams are ready to help you identify the right solution for your application. Contact us to request samples or start a conversation.