Description
FLUITEN Standard Mechanical Double pusher Seals BM6D – Cat. 2, Type A, “dual” seal suitable for flushing with pressurized liquid 3CW-CW; Cat. 2.3; Type A. Maximum pressure: 40 bar.
Key Technical Specifications:
| DIAMETER | SPEED | PRESSURE PROCESS | TEMPERATURE |
|---|---|---|---|
| 20-110 (mm) | 0-23 (m/sec) | 0-20 (bar g) | -40 – 176 (°C) |
Why Choose FLUITEN BM6D?
The BM6D features a double-balanced, face-to-back design with a pressurized barrier fluid system, engineered to meet zero-emission requirements for hazardous or polluting fluids. Built for durability, it performs reliably under high mechanical stress, high pressure, and vibration—ideal for API 610 vertical or horizontal pumps.
Key Technical Specifications
Seal Type: Double-balanced dual pusher seal with API 682 compliance
Barrier Fluid System: Pressurized barrier fluid to prevent emissions and ensure carryover under pressure reversals
Seal Faces:
Stationary rings: Reaction-bonded SiC (U41) , Sintered SiC (U31) , or Tungsten Carbide (K21)
Rotating rings: Graphite (Z11); optional inserts in graphite (Z12) , SiC (U42/U32) , or Tungsten Carbide (K22)
Gasket Materials: Fluoroelastomer (FKM), EPDM, or FFKM across all sealing interfaces
Springs: Hastelloy multi-spring array placed completely outside process fluid
Drive System: Specialized triple drive-lug rotor designed to resist vibration, misalignment, and ring wear
Buffer/Barrier Ports: Inlet, outlet, and vent connections for auxiliary fluid; includes multi-point injection and integrated circulation for thermal management
Flange & Sleeve: Slotted flange and tailored shaft sleeve for pump retrofit or OEM fitment
Optional Features: Available buffer-fluid injection flush plans (Plan 52/53) depending on configuration
Performance Range
Shaft Diameter: 20–110 mm
Sliding Speed: up to 23 m/s
Pressure Rating: 0–20 bar(g)
Temperature Range: –40 °C to +176 °C
Typical Applications
Pumps handling dangerous, pollutant, or crystallizing fluids requiring emissions control
API 610 pumps (horizontal/vertical) in chemical , petrochemical , and energy industries
Installations requiring dependable cartridge sealing with barrier fluid management
Additional Features
Double-balanced hydraulics ensure consistent sealing under pressure reversals
External springs and drive system maintain seal integrity under vibration and misalignment
Cartridge design with slotted flange ensures easy, error-free installation
Integrated barrier-fluid circulation manages temperature without external pumps
c
