Description
FLUITEN Standard Mechanical Double pusher Seals CB8D – Cat.1, Type A, “dual” seal with springs outside the fluid, for non-pressurized liquid flushing: 3CW-CW; Cat. 1, Type A. Maximum pressure: 20 bar.
Key Technical Specifications:
| DIAMETER | SPEED | PRESSURE | TEMPERATURE |
|---|---|---|---|
| 20-110 (mm) | 0-20 (m/sec) | 0-20 (bar g) | -40 – 176 (°C) |
Why Choose FLUITEN CB8D?
The CB8D is a single- pusher, double-balanced hydraulic seal, specifically engineered for hazardous or crystallizing fluid services. It features a pressurized barrier fluid system to prevent emissions and ensure operator safety. The compact pusher design, external multi-springs, and robust drive mechanism offer vibration resistance, misalignment tolerance, and zero-emission performance.
Key Technical Specifications
Seal Type: pusher-mounted, double-balanced hydraulic seal
Barrier System: Pressurized interstitial barrier (sealed barrier fluid)
Stationary Ring Materials: Silicon carbide, graphite, or tungsten carbide options
Rotating Ring Materials: Graphite or carbide materials
Gasket Options: Fluoroelastomer (FKM), EPDM, or perfluoroelastomer (FFKM) for all sealing interfaces
Springs: Hastelloy multi-spring pack located entirely outside the process fluid
Drive System: Patented sliding-drive lugs maintain ring engagement under mechanical stress
Flange & Sleeve: Slotted flange and custom shaft sleeve tailored to pump type
Barrier / Flush Ports: IN/OUT connections for barrier fluid supply and circulation
Barrier Fluid System: High-capacity internal circulation to dissipate heat without external pump
Typical Applications
Pumps handling hazardous or polluting fluids requiring zero emissions
Services involving crystallizing or high-risk chemicals
ISO or ANSI pumps needing double-balanced pusher seals with barrier fluid control
Installations where compact pusher format and minimal maintenance are essential
Additional Features
Double hydraulic balance protects against face separation under pressure reversals
Pressurized barrier system ensures operator safety and environmental compliance
External springs and sliding-drive rotor resist clogging, vibration, and wear
Self-centering slotted flange and sleeve speed up and simplify installation
Custom material options for chemical compatibility and process needs
Zero emission design aligns with strict environmental regulations
