ANFD Exotic Alloy Seal: FDD-550BB
ANFD Exotic Alloy Seal: FDD-550BB
HydroMax Seal FDD-550BB | Exotic Alloy Double Cartridge Seal for ANFD Applications
The FDD-550BB is an exotic alloy multi-spring double cartridge seal with hydraulically balanced seal faces. The “550BB” model features an integral bearing, metal bellows, and Hastelloy wetted parts.
This Rotary Pusher Double Cartridge Seal includes monolithic seal faces, an integral bearing, and O-ring secondary seals, specifically designed for Agitated Nutsche Filter Dryers (ANFDs).
The mechanical seal is equipped with multi-springs, a set screw drive, and quench and drain port connections.
The FDD-550BB accommodates significant axial shaft movement via a specially designed inboard metal bellows. The bellows length is customized to match the vertical movement of the ANFD paddle or agitator.
The seal has a number of design features, comes factory assembled and tested, and has been successfully installed in hundreds of applications.
Product Description
Technical Specifications
- Seal Shaft Sizes:
30mm – 200mm (further sizes can be designed as required) - Inboard Seal Face Combination:
Car/TC, Car/SiC, SiC/SiC - Outboard Seal Face Combination:
Car/TC, Car/SiC - Gasket:
GFT / Graphite - Bellows:
Hastelloy (Length to suit ANFD paddle movement) - Inboard Wetted Parts:
Hastelloy - Elastomers:
Viton, ERP, Aflas, Kalrez - Shaft Speeds:
up to 10 m/s - Pressures:
up to 6 barg (90 psig) – Shaft Size Specific - Temperatures:
up to 200°C (392°F)
Supply Options
- 316 Stainless Steel, Hastelloy, or Exotic Alloy wetted parts
- Plan 52/53 Seal Support System with cooling coil and finned tubing
- Plan 54 Seal Support System (forced barrier fluid circulation for high heat removal)
WARNING:
The safe seal performance characteristics are typical values for each variable in isolation. The individual upper limit values of speed, pressure, and temperature should NOT be used in combination.
