PTFE Bellows / Expansion Joints

PTFE or filled PTFE bellows can, for example:
- to compensate for the displacements,
- to compensate for expansion due to temperature differences,
- reduce constraints or soiling,
- to dampen the transmission of oscillations, noise and vibrations,
- compensate for mounting misalignments.

The different fold geometries ensure flexibility as well as significant pressure stability.
Rounded pleats offer better cleanability than pointed pleats.
The exceptional properties of PTFE allow for the use of bellows/expansion joints in industry
chemical, pharmaceutical, food, petrochemical as well as in various general industrial applications.

Examples of applications:
  Expansion joint in pipelines
  Sterile area protection
  Filling line / Dosing system
  Aseptic valve
  Solenoid valve
  Pump and valve
  Sealing cone

Double-seat valve: it is possible to weld 2 bellows together.

Highlights
- high chemical resistance
- Large operating temperature range: from -70C to +210C. As a result, sterilisation of the bellows is possible.
high diffusion tightness
- good elasticity - excellent resistance to repeated bending
Good insulation
non-stick remarkable cleanability
Good dimensional stability


Our bellows are custom-made by machining
No tooling charges
Small quantities possible
More design freedom


We are able to issue certificates of conformity (EC 2004/1935, FDA, 3A) for the food and pharmaceutical industries.