Description
FLUITEN Standard Mechanical Double API682 Seals TR8D – “Dual” metal bellows seal, suitable for flushing with pressurized liquid: 3 CW-CW; Cat. 1; Type B.
Key Technical Specifications:
| DIAMETER | SPEED | PRESSURE | TEMPERATURE |
|---|---|---|---|
| 20-110 (mm) | 0-23 (m/sec) | 0-20 (bar g) | -40 – 176 (& deg;C) |
Why Choose FLUITEN TR8D?
The TR8D is a balanced, dual- seal with rotating metal bellows, specifically designed for hazardous, toxic, or crystallizing fluids that solidify upon exposure to air. It operates effectively without external flushing by using a pressurized auxiliary fluid system. The spring-less bellows drive prevents clogging, accommodates axial and radial shaft movement, and ensures reliable sealing in dynamic conditions.
Key Technical Specifications
Seal Type: Dual- seal with rotating metal bellows, face-to-back configuration, using pressurized auxiliary fluid for barrier flushing
Seal Faces:
Stationary rings: reaction-bonded silicon carbide , sintered silicon carbide , or tungsten carbide
Rotating bellows: stainless steel bellows with graphite-antimony , silicon carbide , or tungsten carbide inserts
Gaskets: Static elastomer (FKM, EPDM, FFKM) seals for rotating and stationary rings, sleeve, and flange
Auxiliary Fluid System: In/Out barrier fluid ports with internal circulation to dissipate heat and prevent face crystallization—no external pump needed
Drive Mechanism: Rotating metal bellows eliminate clogging issues and maintain seal face contact during shaft movement
Flange & Sleeve: Compact cartridge with slotted flange and tailored shaft sleeve to fit new or existing pumps
Typical Applications
Pumps in ANSI/ISO configurations handling toxic or crystallizing fluids where external flushing is not viable
Systems demanding compact, clog-resistant sealing, with resilience to high-speed operation and shaft movement
Industrial settings in chemical, petrochemical, or water treatment sectors demanding high reliability
Additional Features
Balanced dual-cartridge design sustains sealing performance during pressure reversals
Metal bellows seal offers clog-free operation and mechanical adaptability
Integrated barrier-fluid circulation manages temperature and prevents crystallization without extra components
Cartridge format simplifies installation and retrofit into existing pump infrastructure
