Description
FLUITEN Standard Mechanical Single API682 Seals TRHL – Stationary single metal bellows seal with secondary containment seal. 2CW-CS; Cat. 2; “Hybrid” type.
Key Technical Specifications:
| DIAMETER | SPEED | PRESSURE | TEMPERATURE |
|---|---|---|---|
| 20-110 (mm) | 0-23 (m/sec) | 0-40 (bar g) | -80 – 400 (°C) |
Why Choose FLUITEN TRHL?
The TRHL is a balanced, single-seal featuring a rotating metal bellows and a stationary secondary containment ring. It’s engineered for high-temperature fluids (>260 °C) that crystallize or solidify in air, especially where external flushing is unavailable. The bellows drive eliminates clog-prone springs and dynamic O‑rings while tolerating both axial and radial shaft movement. The stationary containment face reduces friction and thermal stress via Fluigrid technology.
Key Technical Specifications
Seal Type: Rotating metal bellows with stationary containment (API 682 4th Edition, Category 2/3 “Hybrid”)
Stationary Ring Options: Dry-running graphite, reaction-bonded silicon carbide, sintered silicon carbide, or solid tungsten carbide
Rotating Bellows & Inserted Ring Options: Metal bellows in stainless steel with insert rings in graphite, silicon carbide, or tungsten carbide
Secondary Containment Face: Stationary containment ring supports high peripheral speeds and dry running
Gaskets: Static seals in FKM, EPDM, FFKM; optional Grafoil for high-temperature resilience
Containment Bushing: Floating graphite auxiliary bush to collect physiological leakage
Drive Mechanism: Rotating bellows eliminate springs and elastomer use, ensuring clog-resistant operation and movement tolerance
Cooling Features: Multipoint injection and quench/vent ports for flush or leakage control
Flange & Sleeve: Slotted flange and custom sleeve designed for installation and retrofit across pump types
Typical Applications
Pumps handling fluids above 260 °C that crystallize in air with no external flushing
API 610 horizontal and vertical pumps in chemical, petrochemical, and thermal services
Systems requiring high-temperature containment, clog-resistant operation, and movement compensation
Additional Features
Balanced cartridge format simplifies installation and retrofit
Fluigrid face texture minimizes heat generation and friction
Stationary containment face preserves seal integrity at high RPM
Rotating bellows drive ensures long-term reliability under dynamic conditions
Floating auxiliary bush and multipoint injection provide leak management and temperature control
FLUITEN’s TRHL is the premium solution for high-temperature, dry-running services involving crystallizing fluids. Its rotating bellows drive, stationary containment, Fluigrid technology, and compact cartridge design ensure clog-free, high-performance sealing in the most demanding industrial environments.
