Description
FLUITEN Standard Mechanical API682 Seals LL6D – back-to-back seal suitable for pressurized nitrogen flushing: 3NC-BB; Cat. 2; Type A.
Key Technical Specifications:
| DIAMETER | SPEED | PRESSURE | TEMPERATURE |
|---|---|---|---|
| 20-110 (mm) | 0-23 (m/sec) | 0-40 (bar g) | -40 – 176 (°C) |
Why Choose FLUITEN LL6D?
The LL6D is a back-to-back, double- seal featuring Fluilift nitrogen gas-lift technology, which creates a microscopic separation between sealing faces. This design delivers near-zero friction, exceptional energy efficiency, and zero emissions, even in high-vibration and mechanically stressful environments.
Key Technical Specifications
Seal Configuration: Back-to-back double cartridge seal with gas-lift barrier
Gas-Lift System: Pressurized nitrogen flows through surface microcavities, lifting rotating rings to minimize friction and energy loss
Seal Faces:
Stationary rings: reaction-bonded or sintered silicon carbide
Rotating rings: resin-impregnated graphite for dry-running
Secondary Seals: Static gaskets in elastomers—FKM, EPDM, or FFKM—on rotating rings, stationary rings, sleeve, and flange
Springs: Hastelloy springs located outside the process fluid
Drive System: Three-coupling rotor drive designed to maintain ring stability under vibration and misalignment
Flange & Sleeve: Customizable flange and shaft sleeve tailored to pump specifications
Orientation: Suitable for both forward and reverse shaft rotation upon request
Performance Range
API Compliance: Fully tested to API 682 4th Edition standards
Pressure Rating: Suitable for medium-pressure applications
Emission Handling: Zero-emission operation achieved through gas-lift isolation
Mechanical Resilience: Highly robust , capable of withstanding significant mechanical stress
Typical Applications
API 610 horizontal and vertical pumps in refinery , chemical , or petrochemical services
Ideal for pumping toxic , volatile , or environmentally sensitive fluids , where zero emissions are critical
Suited for installations with high mechanical vibration , misalignment , or harsh conditions
Additional Features
Fluilift technology reduces friction to near zero, enhancing energy efficiency and component lifespan
3-coupling drive system ensures steady operation even during misalignment or vibration
Back-to-back design supports zero-emission performance and fluid separation via gas-lift barrier system
Custom flange and sleeve design allows adaptable installation across different pump types
The FLUITEN LL6D stands out as a rugged, energy-efficient gas-lift double seal. Its zero-friction, zero-emission operation, coupled with mechanical resilience and API‑compliant performance, makes it an outstanding choice for industrial pumps handling critical and sensitive fluids.
