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.
Dhwani Polymer

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