PFAS regulations are becoming an increasingly important consideration for manufacturers of medical devices, food-contact products, packaging and industrial components.
For product designers and purchasing teams, this creates an important question:
Can silicone be used as an alternative when a product currently contains fluoropolymers or other fluorinated materials?
In some applications, the answer may be yes.
Silicone rubber and liquid silicone rubber (LSR) can provide temperature resistance, flexibility, sealing performance and biocompatibility without relying on fluoropolymer chemistry for their fundamental polymer structure.
However, the subject is more complicated than simply replacing one material with another.
PFAS regulations vary by country, application and product category. Medical devices, food-contact articles and food-contact packaging may also be regulated differently.
For manufacturers developing products for the United States and European Union in 2026, material selection should therefore begin with a clear understanding of the application and applicable regulatory
requirements.
Why Are Manufacturers Talking About PFAS in 2026?
PFAS — per- and polyfluoroalkyl substances — are a very large group of fluorinated chemicals.
They have been used in many industrial and consumer applications because certain PFAS-containing materials can provide:
- Chemical resistance
- Low friction
- Oil resistance
- Water resistance
- Temperature resistance
- Electrical insulation
- Non-stick properties
PFAS-related regulation has expanded because certain PFAS are highly persistent in the environment and some have been associated with health concerns.
However, it is important to understand that PFAS is not one single chemical.
Different PFAS have very different molecular structures, properties and applications.
This distinction is particularly important in medical devices.
PFAS in Medical Devices: What the FDA Says in 2026
In September 2026, the U.S. Food and Drug Administration updated its information and FAQs regarding PFAS in medical devices.
The FDA emphasizes an important distinction:
The fluoropolymers used in medical devices are different from many of the small-molecule PFAS associated with environmental contamination and health concerns.
Fluoropolymers can provide important properties including:
- Biocompatibility
- Durability
- Electrical resistance
- Lubricity
These materials are used in products such as catheters, cardiovascular implants, tubing, wound dressings and other medical devices.
The FDA’s current position is therefore not that all PFAS-containing medical materials should simply be eliminated.
For medical-device designers, this means material substitution should be based on device performance, risk assessment and regulatory requirements, rather than assuming that every fluoropolymer must be replaced.
Can Silicone Replace Fluoropolymers in Medical Devices?
Sometimes — but not always.
Silicone and fluoropolymers have different physical and chemical properties.
Medical-grade silicone and LSR are already widely used for components requiring:
- Flexibility
- Elasticity
- Sealing
- Soft-touch surfaces
- Temperature resistance
- Electrical insulation
- Biocompatibility
Potential silicone components include:
- Medical seals
- Gaskets
- Valves
- Diaphragms
- Tubing
- Masks
- Respiratory components
- Device housings
- Silicone overmolded components
- Fluid-handling components
However, silicone may not reproduce the extremely low-friction or chemical-resistance characteristics required from certain fluoropolymers.
Material substitution therefore requires engineering evaluation.
The better question is not:
“Can silicone replace PFAS?”
It is:
“Can silicone meet the mechanical, chemical, biological and regulatory requirements of this specific component?”
Medical-Grade Silicone: What Should Designers Evaluate?
Selecting “medical silicone” is not sufficient by itself.
The material should be evaluated according to the final application.
Important considerations can include:
Biocompatibility
Depending on the device and type of patient contact, appropriate biological evaluation may be required.
Designers should identify:
- Type of body contact
- Contact duration
- Implantation requirements
- Cytotoxicity requirements
- Sensitization requirements
- Irritation requirements
Applicable testing and documentation depend on the final medical device and regulatory pathway.
Sterilization Compatibility
Medical silicone components may be exposed to sterilization processes such as:
- Steam/autoclave
- Ethylene oxide
- Gamma radiation
- Electron beam
Not every silicone formulation responds identically.
Material performance should be evaluated after the intended sterilization method and number of cycles.
Extractables and Leachables
For certain medical applications, manufacturers may need to evaluate substances that can be extracted from or migrate out of the material.
This becomes particularly important for long-term contact, fluid pathways and sensitive medical applications.
Manufacturing Traceability
Medical-device manufacturers may also require documentation covering:
- Material lot
- Supplier
- Production batch
- Molding conditions
- Inspection records
- Change control
Material compliance is only one part of a controlled medical-component manufacturing process.
PFAS Rules for Food Applications Are Also Changing
Food applications require another important distinction:
Food-contact material and food-contact packaging are not always the same regulatory category.
This distinction has become particularly important in Europe.
From August 12, 2026, the EU Packaging and Packaging Waste Regulation applies restrictions to PFAS in food-contact packaging.
The regulation establishes concentration limits including:
- 25 ppb for any individual PFAS measured by targeted analysis, excluding polymeric PFAS from this measurement
- 250 ppb for the sum of PFAS measured through targeted analysis, subject to the regulatory methodology
- 50 ppm for PFAS including polymeric PFAS under the specified total-fluorine-related framework
These requirements apply specifically within the scope defined by the regulation.
Product designers should therefore avoid simplifying the rule to:
“The EU has banned PFAS in every food-contact product.”
That statement would be inaccurate.
Food-Contact Packaging vs Food-Contact Silicone Components
Consider several examples:
Example 1: Silicone seal inside food packaging
This component may need to be evaluated as part of the food-contact packaging system.
Example 2: Silicone spatula
This is a food-contact article, but it is not necessarily “packaging.”
Example 3: Silicone gasket in food-processing equipment
This may contact food but serves a different function from consumer food packaging.
Example 4: Silicone valve in a beverage container
Its regulatory treatment depends on the product design, intended use and market.
Therefore, manufacturers should first determine what the component actually is before selecting a compliance strategy.
EU Food-Contact Requirements Beyond PFAS
PFAS should not become the only focus of food-contact material selection.
Food-contact materials placed on the EU market are subject to the general framework of Regulation (EC) No 1935/2004.
The basic principle is that materials should not transfer substances to food in quantities that could:
- Endanger human health
- Cause unacceptable changes in food composition
- Affect taste, odor or other organoleptic characteristics
Food-contact materials must also be manufactured according to applicable Good Manufacturing Practice requirements.
For a custom silicone component, the complete regulatory evaluation can therefore involve much more than asking whether PFAS are present.
What About Food-Contact Requirements in the United States?
PFAS rules in the United States also require careful interpretation.
The FDA has historically authorized certain PFAS-containing substances for specific food-contact uses.
These applications have included:
- Non-stick coatings
- Sealing gaskets used in food-processing equipment
- Manufacturing aids
- Grease-resistant paper applications
A major change occurred when PFAS-containing grease-proofing substances for paper and paperboard food packaging were voluntarily phased out of the U.S. market.
Again, this does not mean that every fluorinated material used in every food-contact application has automatically been prohibited.
Product category and intended use matter.
Is Silicone Naturally PFAS-Free?
This question requires careful wording.
The polymer backbone of conventional silicone rubber is based primarily on silicon and oxygen chemistry rather than the carbon-fluorine chemistry characteristic of fluoropolymers.
However, manufacturers should not automatically claim that every finished silicone compound is “PFAS-free.”
A commercial silicone formulation may contain:
- Base polymer
- Fillers
- Pigments
- Catalysts
- Processing additives
- Functional additives
Manufacturing processes can also introduce other substances.
Therefore, when a customer requires PFAS-free materials, the correct approach is to obtain documentation from the silicone raw-material supplier and, when necessary, conduct appropriate testing.
This distinction is especially important for medical and food-contact products.
“PFAS-Free” Should Be a Verified Requirement, Not a Marketing Assumption
For OEM and ODM projects, customers increasingly include requirements such as:
“Material must be PFAS-free.”
Before accepting this requirement, the supplier should clarify what the customer means.
Questions may include:
- Which PFAS definition applies?
- Which market will the product enter?
- Is the requirement based on EU, U.S. or customer-specific rules?
- Is intentional addition prohibited?
- Is there a maximum concentration?
- Is laboratory testing required?
- What analytical method is required?
- Does the requirement include polymeric PFAS?
- Is a supplier declaration sufficient?
Without these details, two companies may use the phrase “PFAS-free” while applying completely different standards.
Why Silicone Is Still Attractive for Medical and Food-Contact Design
Despite the increasing complexity of regulatory requirements, silicone remains an important engineering material.
Flexible Sealing
Silicone can maintain elastic sealing pressure across repeated compression cycles when the correct formulation and geometry are selected.
Applications include:
- Bottle seals
- Medical-device seals
- Food-container gaskets
- Dispensing valves
- Pump components
- Fluid-system seals
Temperature Resistance
Silicone can operate across a relatively wide temperature range compared with many conventional elastomers.
This makes it useful for products involving:
- Hot liquids
- Steam
- Cooking
- Sterilization
- Refrigeration
- Thermal cycling
Precision LSR Molding
Liquid silicone rubber can be injection molded into complex geometries with small features.
Examples include:
- Thin membranes
- Duckbill valves
- Umbrella valves
- Diaphragms
- Micro-seals
- Precision gaskets
- Integrated sealing structures
Surmoulage au silicone
Silicone can also be combined with selected plastics or metals through insert molding or overmolding.
This allows designers to integrate:
Rigid structure + flexible seal
into a single component.
Potential applications include medical housings, food containers, dispensing systems and reusable consumer products.
Silicone vs Fluoropolymer: Do Not Select Materials Based on PFAS Status Alone
PFAS regulation may influence material selection, but engineering requirements still matter.
A material comparison should consider:
| Requirement | Silicone | Fluoropolymer |
|---|---|---|
| Elasticity | Excellent | Depends on material |
| Compression sealing | Excellent | Application dependent |
| High-temperature capability | Good to excellent | Often excellent |
| Very low friction | Moderate | Often excellent |
| Chemical resistance | Good but chemistry-dependent | Often excellent |
| Flexible molding | Excellent | Material/process dependent |
| Precision injection molding | Excellent with LSR | Depends on polymer |
| Soft-touch applications | Excellent | Less typical |
This is why silicone should be viewed as a potential engineering alternative for appropriate applications, not as a universal replacement for fluoropolymers.
Questions to Ask Your Silicone Supplier in 2026
When sourcing silicone components for medical or food-contact products, consider asking:
1. What is the exact silicone grade?
Avoid approving materials based only on descriptions such as:
“Food-grade silicone”
or:
“Medical silicone.”
Request an identifiable material grade and supporting documentation.
2. What regulatory documentation is available?
Depending on the application, this may include relevant:
- FDA food-contact information
- EU food-contact documentation
- Biocompatibility information
- REACH information
- RoHS information
- Material declarations
Not every document applies to every product.
3. Can the supplier provide PFAS information?
If PFAS status is part of your project specification, request an appropriate declaration or test documentation based on your defined requirement.
4. Are pigments and additives included?
A base silicone compound may meet a requirement while an added color masterbatch changes the final formulation.
The complete finished material should therefore be considered.
5. Is the production process controlled?
For sensitive applications, ask about:
- Material traceability
- Batch control
- Contamination prevention
- Inspection
- Change management
- Manufacturing environment
A Better Material Selection Process
For new projects, a practical selection process is:
Step 1 — Define the market
United States, European Union or another region.
Step 2 — Define the product category
Medical device, food-contact article, food-contact packaging or industrial component.
Step 3 — Define the contact conditions
Temperature, duration, food type, body contact, chemicals and sterilization.
Step 4 — Define PFAS requirements
Determine whether the requirement comes from regulation, customer specification or internal company policy.
Step 5 — Select the silicone grade
Choose a formulation based on mechanical, chemical, thermal and regulatory requirements.
Step 6 — Review additives and colors
Confirm that the complete formulation meets project requirements.
Step 7 — Prototype and validate
Test the actual molded component rather than relying exclusively on raw-material specifications.
Step 8 — Maintain documentation
Keep material declarations, batch records and relevant compliance documentation associated with the production project.
What Product Designers Should Take Away From the 2026 PFAS Changes
The regulatory direction is clear: manufacturers are being asked to understand their material composition in greater detail.
But PFAS compliance should not be reduced to replacing every fluoropolymer with silicone.
For medical products, fluoropolymers continue to provide critical properties in many devices.
For food applications, the EU’s 2026 PFAS limits specifically create new requirements for food-contact packaging, while other food-contact articles remain subject to their applicable regulatory frameworks.
Silicone can be an excellent option when a product requires:
- Flexible sealing
- Elasticity
- Temperature resistance
- Precision molding
- Soft-touch performance
- Electrical insulation
- Complex LSR geometries
The correct decision depends on the actual component.
Developing a Medical or Food-Contact Silicone Component?
MadeForSilicone supports custom silicone and LSR molding for medical, food-contact and consumer applications, including:
- Custom silicone seals
- LSR valves
- Silicone diaphragms
- Food-container gaskets
- Medical silicone components
- Silicone-to-plastic overmolding
- Precision LSR parts
- Custom complex silicone products
For a new project, send us:
- 2D drawing or 3D STEP file
- Product application
- Target market
- Silicone hardness
- Operating temperature
- Food or fluid contact conditions
- Sterilization requirements, if applicable
- PFAS-related customer requirements, if applicable
- Estimated annual quantity
We can review the component geometry, material requirements, molding process and documentation requirements before tooling.
FAQ
Is silicone PFAS-free?
Conventional silicone polymers are based on silicon-oxygen chemistry rather than fluoropolymer chemistry, but the PFAS status of a finished commercial silicone compound should not be assumed. If PFAS-free status is required, request appropriate supplier documentation and testing where necessary.
Did the EU ban PFAS in all food-contact materials in 2026?
No. The EU Packaging and Packaging Waste Regulation introduced PFAS concentration limits for food-contact packaging from August 12, 2026. Other food-contact products must be evaluated under the regulations applicable to their specific product category.
Can silicone replace PTFE in medical devices?
Silicone can replace fluoropolymers in some applications, particularly where flexibility and sealing are important. However, PTFE and other fluoropolymers provide properties such as very low friction and high chemical resistance that silicone may not reproduce. Substitution requires application-specific engineering evaluation.
Are fluoropolymers banned in U.S. medical devices?
No. The FDA states that fluoropolymers remain important materials in many medical devices and distinguishes them from smaller-molecule PFAS associated with certain environmental and health concerns.
What documentation should I request for a food-grade silicone component?
The required documents depend on the target market and application. They may include food-contact declarations, material specifications, REACH/RoHS information and customer-specific substance declarations. PFAS documentation should be requested when required by regulation or project specifications.
Should PFAS testing be performed on the raw material or finished silicone part?
This depends on the applicable requirement. For high-risk or customer-controlled projects, evaluating the finished formulation can be important because pigments, additives and processing may differ from the base silicone raw material.