PTFE Bellow Single Acting Seal
Composite PTFE bellow seal for extremely corrosive service.
The PTFE Bellow Single Acting Seal is used for extremely corrosive services. A glass-filled PTFE face is composite-moulded to a highly flexible PTFE bellow, giving an all-fluoropolymer wetted path.
With every wetted part in PTFE or glass-filled PTFE, this seal withstands strong acids, oxidisers and solvents that attack elastomer seals.
The flexible PTFE bellow provides the spring effect and accommodates shaft movement without a separate metal spring in the fluid.
Key features
- All-PTFE / glass-filled-PTFE wetted parts
- Composite-moulded face-to-bellow construction
- No metal spring in contact with the fluid
- For strong acids, oxidisers and aggressive solvents
Typical applications
- Strong acid transfer
- Chlor-alkali and oxidiser service
- Highly corrosive chemical pumps
Materials of construction
- Face: glass-filled PTFE
- Bellow: virgin PTFE
- Mating ring: ceramic / silicon carbide
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Tell us your operating conditions, we will engineer the seal
Send the fluid, pressure, temperature, speed and shaft size, or a sample of the existing seal. We reply with a recommendation and a quotation.