PTFE Bellows

PTFE bellows are used as balancing elements between engineering parts. They are machined parts. Due to the different geometries of the folds highly flexible or pressure-resistant versions can be designed and manufactured.

PTFE’s outstanding material properties allow bellows to be used increasingly in medical, food and general industrial applications.

Benefits

Nearly universal chemical resistance
FDA-conformable materials for food and pharmaceutical products
Very good suitability for sterilization
Anti-adhesive
Wide temperature range from –60°C to +250°C
Cost effective series production from in-house production of semi-finished goods to the final product
High reverse bending strength
Good dimensional stability
Low tooling costs
Freedom of design

Applications

Pointed, Non-cut Folds for maximum expansion and low pressures up to 3 bar.
Round, Machined Folds for improved cleaning and maximum reverse bending strength. Low to medium pressures up to 6 bar.
Solid, Machined Folds for high pressures above 6 bar. Optimal with rectangular support on the rod or in the cylinder.

Fields of Application

As compensation for expansion in pipe systems
For shielding sterile areas
For filling systems
With aseptic valves
With solenoid valves
With metering devices
With pumps and valves

Application Examples

Bellows for a solenoid valve in medical technology. High flexibility and frequency. Physiologically harmless. Resistant to aggressive cleaning agents.
Bellows for filling valves hermetical separation of the medium from the actuation mechanism. The tip is the sealing cone of the valve.
Multi-functional bellows Separation of two areas with moving parts. Integration of sealing and guiding elements. Connections can be performed according to customer specifications.