PTFE Bellows
Customized Design and Performance
PTFE bellows are used, for example, as compensating elements between engineered parts. By specifically using different fold geometries, any combination of properties can be achieved as required—for example, high flexibility or compressive strength.
The outstanding material properties of Polytetraflon®-PTFE allow bellows to be used increasingly in the medical and food sectors, as well as in general industry.
Essential Advantages:
- Almost universal chemical resistance
- FDA conformity for food and pharmaceutical products
- Highly suitable for sterilization
- Antiadhesive behavior
- Large temperature range of –60°C to +200°C
- Cost-effective series production from semifinished product to final product
- High reverse bending strength
- Good dimensional stability
- Low tooling costs
- Freedom of design
Application Examples:
- As compensation for expansion in pipe systems
- For shielding sterile areas
- Filling lines
- Aseptic valves
- Solenoid valves
- Metering devices
- Pumps and valves, coating technology, steel mills, fitting industry
PTFE Bellow Types
Bellows for solenoid valves
![[Translate to Koreanisch:] Bellows for solenoid valves [Translate to Koreanisch:] Bellows for solenoid valves](https://www.elringklinger-engineered-plastics.kr/fileadmin/user_upload/ekkt/produkte/faltenbaelge/Faltenbalg_fuer_Fuellventil.jpg)
For use in medical engineering. High flexibility and frequency. Physiologically harmless. Resistant to aggressive cleaning agents.
Bellows for Filling Valves
![[Translate to Koreanisch:] Bellows for Filling Valves [Translate to Koreanisch:] Bellows for Filling Valves](https://www.elringklinger-engineered-plastics.kr/fileadmin/user_upload/ekkt/produkte/faltenbaelge/Faltenbalg_fuer_Magnetventil.jpg)
Hermetic separation of the medium from the actuation mechanism. The tip is the sealing cone of the valve.
Multifunctional Bellows
![[Translate to Koreanisch:] Multifunctional Bellows [Translate to Koreanisch:] Multifunctional Bellows](https://www.elringklinger-engineered-plastics.kr/fileadmin/user_upload/ekkt/produkte/faltenbaelge/ptfe-faltenbalg-multifunktionsbalg.gif)
Separation of two areas with moving parts. Integration of sealing and guiding elements. Connections can be designed according to customer specifications.
Fold Types
Pointed, Non-cut Folds
![[Translate to Koreanisch:] Pointed, Non-cut Folds [Translate to Koreanisch:] Pointed, Non-cut Folds](https://www.elringklinger-engineered-plastics.kr/fileadmin/user_upload/ekkt/produkte/faltenbaelge/ptfe-faltenbalg-spitze_falten.gif)
For maximum expansion and low pressures up to 3 bar.
Round, Machined Folds
![[Translate to Koreanisch:] Round, Machined Folds [Translate to Koreanisch:] Round, Machined Folds](https://www.elringklinger-engineered-plastics.kr/fileadmin/user_upload/ekkt/produkte/faltenbaelge/ptfe-faltenbalg-runde-falten.gif)
For improved cleaning and maximum reverse bending strength. Low to medium pressures up to 6 bar.
Solid, Machined Folds
![[Translate to Koreanisch:] Solid, Machined Folds [Translate to Koreanisch:] Solid, Machined Folds](https://www.elringklinger-engineered-plastics.kr/fileadmin/user_upload/ekkt/produkte/faltenbaelge/ptfe-faltenbalg-massive-falten.gif)
For high pressures above 6 bar. Optimal with rectangular support on the rod or in the cylinder bore.