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GSL – Non-contacting containment seal

Mechanical Seal Flowserve

GSL non-contacting gas seals are designed for dry running vapor containment and full pressure wet backup sealing in light hydrocarbon, crude oil and hazardous services.

Fully compliant with API 682 Type A, Arrangement 2 containment seal requirements
• Greater reliability and service life assured by silicon carbide seal face with a bi-
directional wave pattern that provides the lift necessary for non-contacting operation
• Improved plant and personnel safety from backup sealing capability to 600 psi
(41.4 bar), allowing safe shutdown if primary seal fails
• Faster, trouble-free startup via cartridge assembly that simplifies installation
• Meets environmental emission limits with available nitrogen sweep auxiliary system

Specification
Industries
Advantages
Documents
Contact

Specification

Pressure- Up to 600 psi (41.4 bar)
Temperature– -40 to 400°F (-40 to 204°C)
Specific Gravity- 0.45 liquid and higher
Surface Speed- 5 to 100 fps (1.5 to 30.5 m/s)
Shaft Sizes- 1.000 to 6.000 inch (25.4 to 152.4 mm)

Metal Components- 316 Stainless Steel,
Alloy C-276, Alloy 20
Rotating Face- Carbon
Stationary Face- Silicon Carbide
Gaskets- Fluoroelastomer,
Perfluoroelastomer

Industries

SAGD
Products Pipeline
Heavy Oil and Upgrading
Alkylation
Slurry Processing
Auxiliary
Solvents
Catalytic Cracking
Utilities
Caustic and Chlor-Alkali
Volatile Organic Compounds
Crude Handling and Treatment
Waste Processing
Crude Pipeline
Water Handling and Treatment
Delayed Coking
Water Injection
Distillation
Hydrocraking
Hydrotreating
Logistics and Tank Farm
Pharmaceuticals
Polymers
Acid Transfer

Advantages

The silicon carbide seal face features Flowserve Precision Face Topography with a bi-directional wave pattern that slightly separates the seal faces, ensuring long-term, reliable performance.
Equipped with either a contacting or non-contacting inboard seal, this low-emission design meets stringent emissions standards, particularly in light hydrocarbon services with vapour disposal system back pressure below 25 psi (1.7 bar).
Unpressurised containment seal operation can include support system Plans 72, 75, and 76 for easier maintenance.
The high and low pressure liquid backup seal capability allows for safe and convenient equipment shutdown if the primary seal fails, handling pressures up to 600 psi (41.4 bar).
Minimal inventory is needed to reconfigure a GS seal in an existing dual seal setup and upgrade to non-contacting wave face reliability.
The cartridge assembly simplifies installation, ensuring a quick and trouble-free start-up.
Remote performance monitoring is available within the standard piping plans to report the status of the primary seal and reduce downtime.
Available as a single seal for equipment such as low-pressure blowers and vertical sump pumps, where dry running and low emissions are required.

Documents

GSL Brochure.pdf

Contact Us

Contact our Mechanical Seal Team

Chris Sheeran (External) – Mob: 087 755 9936
Evan Twomey - 083 162 0251
Miriam Adair - Tel: 021 461 7235
Office Tel: 021 461 7200

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