S748 Tandem Dry Gas Seal with Intermediate Labyrinth for Centrifugal Compressor
S748 Tandem Dry Gas Seal with Intermediate Labyrinth for Centrifugal Compressor
S748 Tandem Dry Gas Seal with Intermediate Labyrinth for Centrifugal Compressor
S748 Tandem Dry Gas Seal with Intermediate Labyrinth for Centrifugal Compressor
S748 Tandem Dry Gas Seal with Intermediate Labyrinth for Centrifugal Compressor
S748 Tandem Dry Gas Seal with Intermediate Labyrinth for Centrifugal Compressor

S748 Tandem Dry Gas Seal with Intermediate Labyrinth for Centrifugal Compressor

Performance
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dry gas seal support systems
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Operating Parameters
● Pressure: ≤25MPa ● Temperature: -160~260℃ ● Shaft Diameter: 25~360mm ● Speed: ≤50000r/min ● Linear Velocity: ≤180m/s The above limit application parameters are not met simultaneously, customized design for particular applications.
Product Description
● Suitable for high pressure, large shaft diameters and harsh applications. ● Non-contact running seal face. ● The surrounding design for seat effectively reduces the damage of equipment 　which caused by broken seat. ● Two sets tandem frictional pairs, the primary seal is for main seal, the secondary seal is 　for safe seal. ● The auxiliary seal uses high-performance polymer seal which has good temperature 　resistance, pressure resistance, and corrosion resistance. ● The two-stage seal can withstand the full process pressure, and after the failure of 　inboard seal, outboard seal can still operate safely under the full process pressure. ● There is a secondary seal gas injection, the secondary seal working gas is nitrogen, and 　no process gas leaks from outboard seal to the atmosphere. ● Unidirectional grooves and bidirectional grooves are available. ● Cartridge design is easy for installation and dismantling. ● Suitable for most applications, it is a structure with the highest safety and reliability. 　Process gas does not leak into the atmosphere, and external nitrogen does not enter 　the process system.
Recommended Applications
● Cracking Gas Compressor ● Propylene Compressor ● Ethylene Compressor ● Natural Gas Compressor ● Recycle Hydrogen Compressor ● Recycle Gas Compressor ● Ammonia Compressor ● Expander
Interface Details
● A　Primary Seal Gas 　　　　　Process gas/External gas ● B　Primary Leakage Gas 　　　 Vent to flare/Vent to safe location ● C　Secondary Seal Gas 　 　　 Nitrogen　 ● D　Secondary Leakage Gas　　 Vent to safe location ● E　Separation Gas 　　　　　　Nitrogen/Instrument air, nitrogen is preferred
Materials and Configurations

Categories

Components

Standard Materials

Optional Configurations

Seal Rings

Seat

SiC

WC、Silicon Nitride

Face

Carbon Graphite

Silicon Carbide(DLC)

Elastic Elements

Spring

Hast.C

Inconel718

Metal Parts

Sleeve

1Cr13、2Cr13

17-4PH、2205、316L

Housing

Secondary seals

Polymer Seal

PTFE

/

Auxiliary Seals

Polymer Seal

PTFE

/

Separation Seal

/

Labyrinth Seal

Carbon Ring Seal

Determine the best material configuration based on different operating conditions, customer require- ments, execution standards, and application scenarios.

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dry gas seal support systems
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dry gas seal support systems
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Combination Method
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Dry gas seal support systems
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Structure and Sealing Principle
Technical Data
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Quality Assurance
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Contact

Email: export@sns-china.com

International sales: +86-028-85373902

Address: No. 8, 4th Wuke West Road, Chengdu City, Sichuan Province，China

Sinoseal Holding Co., Ltd. is a Chinese  listed company and a leader in China’s Fluid Sealing Industry. Sinoseal has transformed its 40 over years of research and development experience into a professional  company  specialized in the production and a provider of overall sealing solutions for its  customers. With our strong technical strength and advance technology and equipment used in manufacturing , Sinoseal’s  products and services enjoy a good reputation across the industries it serves in China.

Copyright © 2020 SINOSEAL HOLDING Co., Ltd. All rights reserved.

Customized products, please contact our sales department for details.

Email: export@sns-china.com