Key Features
- PTFE construction
- Glass-to-metal compatibility
- Flexible connection capability
- Superior sealing properties
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PTFE Bellows Glass to Metals
PTFE Bellows Glass to Metals
PTFE Bellows Glass to Metals
PTFE bellows for flexible glass-to-metal connections with superior sealing properties.
PTFE Bellows (Glass-to-Metal) Overview
PTFE bellows designed for glass-to-metal connections serve as flexible connectors that absorb mechanical stress, vibration, and thermal expansion between rigid sections. They are widely used in glassware assemblies to isolate the fragility of glass from the mechanical forces of metal equipment. These bellows support the mitigation of vibration transfer from rotating equipment into glass pipelines and relieve misalignment or expansion forces between joined segments. The flexible geometry and chemical inertness of PTFE make these bellows especially suited for aggressive chemical atmospheres and vacuum or pressure environments intrinsic to glass reactor systems.
Specifications
Important specifications for PTFE bellows (glass-to-metal) include:
– **Material**: Pure PTFE for the bellows body, ensuring corrosion resistance and chemical inertness
– **Geometry**: Number of convolutions, wall thickness, and effective length to suit flexibility and movement requirements
– **Flange Interface**: One end typically terminates in a PTFE flange or adaptor flange to connect to metal, while the other end mates with glass (via glass flange or joint)
– **Temperature Range**: High temperature tolerance typical of PTFE in chemical applications
– **Pressure / Vacuum Capability**: Suitable for moderate vacuum and process pressures depending on design
– **Vibration Isolation**: Designed to dampen and decouple mechanical vibrations from metal equipment
– **Misalignment Tolerance**: Can accommodate slight axial or lateral offset between connections
– **Customization**: Flange drilling patterns (e.g. Table E, Table F, ASA 150) may be offered per customer requirement
Applications
Glass-to-metal PTFE bellows are applied in scenarios such as:
– Connecting glass assemblies to metal hardware (e.g., pumps, heat exchangers, flanges)
– Isolating vibration from mechanical systems to protect delicate glass joints
– Absorbing differential thermal expansion to reduce stress in glass structures
– Providing flexibility in modular glass networks for easy installation
– Use in vacuum or pressure systems in chemical, pharmaceutical, and laboratory setups
– Any glassware-based process involving mechanical coupling with non-glass components where stress isolation is critical
They enable safer and more robust integration between dissimilar materials in high-performance process systems.