AFLAS
What are AFLAS gaskets?
These compounds are usually recognized by the trade name Aflas® and have basic dipolymers that differ in viscosity and molecular weight. FEPM compounds have resistance to oils, lubricants and some fuels that approaches that of fluoroelastomer dipolymers. In addition, they have excellent resistance to steam, amines, hydrogen sulfide, acids and bases. Fluorine content is approximately 56%.
The compounds can operate continuously at +170°C (+338°F) in steam and up to 200°C (392°F) in other media, but harden rapidly below 5°C (41°F).
Advantages:
- Excellent ozone and weathering resistance.
- Good heat resistance.
- Excellent steam and radiation resistance.
- Good general chemical resistance.
Limitations:
- High Tg
- Low temperature performance is a limitation.
- Poor resistance to aromatic hydrocarbons (BTEX).
- Poor resistance to extrusion, especially at high temperatures.
Temperature range: +170°C (+338°F) in steam with short excursions up to +260°C (+500°F); other media +2°C to +200°C (+36°F to +392°F).
SOLUTION
- AFLAS 70
- AFLAS 90
MEDIA & ENVIRONMENT:
- H2S
- METHANOL
- CHEMICAL RESISTANCE
| Hydrogenated - HNBR | |||||||
|---|---|---|---|---|---|---|---|
| material | hardness ShA | operating temp. °C | tensile strength MPa | specific gravity g/cm3 | elongation % | certification | |
| AFLAS75 | 75+/-5 | -3°C / +230°C (+26.6 / + 446) | ≥14 | 1.62+/-0.02 | ≥160 | ||
| AFLAS90 | 90 ± 5 | -3°C / +230°C (+26.6 / + 446) | ≥22 | 1.82+/-0.02 | ≥160 | ||