Flowserve GLS/GSS/GSG Specialty Seal

Product Brand

Flowserve

Type

Mechanical Seals

SubType

OEM and Special Duty Seals

About this product

GLS, GSS, and GSG Series seals are designed to fit the unique installation envelop and operating speeds present in integrally geared pumps and compressors. GLS seals are suitable for operating on liquid, whereas GSS seals are designed for operating in gaseous environments. GSG seals are applied at the bottom of vertical gearboxes to seal gearbox oil in and keep contaminants out.

Features and Benefitss

GSS

Longer service life and MTBF enabled by precision face topography, creating seal face liftoff to eliminate wear
High-efficiency performance from non-contacting Precision Face Topography technology with near-zero power consumption
Meets all requirements for low emission containment seals in hydrocarbon pumping applications
Configurable as a single compressor seal, dual pressurized barrier gas seal, or dry-running containment seal

GLS

High-pressure performance enabled by successful operation up to 86.2 bar (1250 psi) in flashing hydrocarbons
Longer service life demonstrated by operation with no measureable face wear or worn taper due to enhanced seal face flatness provided by the nonclamped rotating SiC face
Configurable as a single seal, dual unpressurized seal with liquid buffer, dual unpressurized seal with gas buffer, or dual pressurized seal with liquid barrier

GSG

Energy savings and improved safety enabled by Innovative Hydrodynamic Surface Tension (HST) face topography that provides near-zero leakage performance
Reliable high-speed operation enabled by proprietary laser-machined wavy face
Greater durability and service life assured by durable seal face materials suitable for frequent starts and stops
Upgrade ease made possible by direct replacement of existing gearbox seals without equipment modification

Specifications

API 682

Equipment: Integrally geared pumps

Pressure:

GLS and GSS: up to 86.2 bar (1250 psi)
GSG: up to 17.2 bag (250 psi)

Temperature: -62 to 204°C (-80 to 400°F)

Speeds:

GSS and GSG: 1500 to 36,000 rpm
GLS: 1500 to 26,000 rpm

Shaft Sizes: 25.4 to 31.8 mm (1.000 to 1.250 inch)

Configurations

Arrangement 1 single seal (Common Piping Plans 11, 13, 23, 32) GLS

Arrangement 2 unpressurized dual wet seal (Common Piping Plans 52) GLS/GLS

Arrangement 2 unpressurized dual seal with dry running backup (Common Piping Plans 72, 75, 76) GLS/GSS

Arrangement 3 pressurized dual wet seal (Common Piping Plans 53A, 53B, 53C, 54) GLS/GLS

Arrangement 3 pressurized dual gas seal (Piping Plan 74) GSS/GSS

Gearbox seal GSG

Industries

Chemicals

Basic (Organic & Inorganic)

Oil & Gas

Downstream Processing