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TUBING & ROD
High-Performance PFA Tubing and Rods for Chemical Use
Material Scope
This data applies to Virgin (unfilled) PFA – Tubing, liners, moulded and machined components
Not covered: Filled PFA grades – Composite, reinforced, or multilayer structures
Filled or reinforced grades may behave differently.
How this data is created
- Chemical resistance ratings are compiled from:
- Polymer manufacturer technical data
- Independent industry chemical resistance charts
- Internal validation testing where required
- Testing and evaluation align with recognised plastics chemical resistance standards.
Disclaimer:
This information is provided for guidance only. No responsibility is accepted for its accuracy or completeness.
Material suitability must be verified by the user through appropriate testing for the intended application.
Reference Conditions
Unless otherwise stated, ratings are based on:
- Temperature: 23 °C (73 °F)
- Exposure: continuous immersion
- Duration: 7–30 days
Chemical resistance may reduce as temperatures approach the upper service limit of FEP.
Rating Definitions
| Rating | Meaning |
|---|---|
|
A – Excellent |
No significant change in properties
|
|
B – Good |
Minor change; suitable with engineering review
|
|
C – Limited |
Noticeable degradation; short-term use only
|
|
NR – Not recommended |
Chemical attack, swelling, or failure expected |
Acids
| Chemical | Concentration | 23°C | 100°C | Notes |
|---|---|---|---|---|
|
Hydrochloric Acid |
Up to 37% |
A |
A |
Excellent chemical resistance |
|
Sulfuric Acid |
Up to 98% |
A |
B |
Elevated temperature increases permeation |
|
Nitric Acid |
≤70% |
A |
B |
Oxidising strength increases with temperature |
|
Hyrdrofluoric Acid |
Any |
A |
A |
Highly resistant |
Alkali
| Chemical | Concentration | 23°C | 100°C | Notes |
|---|---|---|---|---|
|
Sodium hydroxide |
Any |
A |
A |
No chemical attack |
|
Potassium hydroxide |
Any |
A |
A |
No chemical attack |
Solvents
| Chemical | Concentration | 23°C | 100°C | Notes |
|---|---|---|---|---|
|
Acetone |
100% |
A |
A |
Stable |
|
Toluene |
100% |
A |
A |
Excellent resistance |
|
MEK |
100% |
A |
A |
No degradation |
|
Chlorinated solvents |
100% |
A |
A |
Resistant |
Oxidising Agents
| Chemical | Concentration | 23°C | 100°C | Notes |
|---|---|---|---|---|
|
Wet chlorine |
– |
A |
B |
Permeation increases with heat |
|
Fuming nitric acid |
>90% |
B |
NR |
Severe oxidising conditions |
|
Ozone |
– |
A |
A |
No Cracking |
Known Limitations
PFA is not recommended for:
- Molten alkali metals
- Elemental fluorine at elevated temperature or pressure
- Applications dominated by gas permeation
Chemical resistance does not prevent permeation.
Engineering Guidance
PFA provides PTFE-like chemical resistance with improved melt processability.
Performance limits are typically driven by:
- Temperature
- Pressure
- Permeation
- Mechanical stress
Application-specific review is recommended for:
- High-temperature service
- Pressure systems
- Semiconductor and chemical processing environments
- CIP / SIP cleaning cycles
Disclaimer:
This information is provided for guidance only. No responsibility is accepted for its accuracy or completeness.
Material suitability must be verified by the user through appropriate testing for the intended application.