Description
FLUITEN Standard Mechanical Double pusher Seals CB8T -Cat. 1, Type A, “dual” seal with springs outside the fluid, suitable for non-pressurized liquid flushing: 2CW-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 CB8T?
The CB8T is a dual-balanced, double-pusher seal built for ISO/ANSI centrifugal pumps handling dirty or suspended-solid fluids. It features a compact, robust design with external springs, a sliding drive rotor, and a self-centering Fluistrip assembly tool, delivering durable sealing, vibration resistance, and straightforward installation.
Key Technical Specifications
Seal Type: Category I double-balanced seal with buffer-fluid flushing
Hydraulic Balance: Balanced on both product and atmosphere sides to resist pressure reversals
Seal Faces:
Stationary rings: graphite (Z11), reaction-bonded SiC (U41), sintered SiC (U31), or solid WC (K21)
Rotating rings: graphite (Z12), SiC (U41/U31), or WC (K21)
Gaskets: FKM, EPDM, or FFKM for rotating ring, stationary ring, sleeve, and flange
Springs: Hastelloy multi-spring pack located entirely outside process fluid
Drive System: Sliding-drive rotor maintains seal-face contact despite vibration or wear
Flange & Sleeve: Slotted flange and custom shaft sleeve for easy pump mounting
Buffer Ports: Flush/vent and buffer in–out ports; integrated circulation eliminates need for external pump
Typical Applications
ANSI B73.1/B72.2 pumps handling dirty or solid-laden fluids
Chemical, petrochemical, industrial, and water treatment processes needing rugged, compact cartridge sealing
Installations demanding balanced hydraulics and low-maintenance operation
Additional Features
Balanced hydraulic design keeps seal faces engaged during pressure reversals
External springs and sliding rotor resist solids, vibration, and misalignment
Fluistrip centering tool and slotted flange simplify installation
Integrated buffer-fluid circulation avoids need for auxiliary pumps
Modular materials adapt to varied process fluids
The FLUITEN CB8T is a compact, maintenance-friendly cartridge seal engineered for ISO centrifugal pumps in challenging environments with dirty or solid-rich fluids. Offering dual-pusher balance, external-spring resilience, and rapid, precise installation, it delivers reliable sealing performance under vibration, pressure stress, and high-speed operation.
