PRODUCTS
S717
Single Dry Gas Seal
● Pressure：0~10.0MPa
● Temperature：-60~200℃
● Shaft Diameter：25~270mm
● Speed：≦160m/s，for higher speed, special design is required
√ Dry-running, contact-free operation, no friction
√ Single seal arrangement, with compact shaft dimensions
√ Unidirectional or bidirectional available
√ Shrouded mating ring prevents secondary damage in the event of a mating ring fracture
√ Cartridge design makes installation and removal easy
√ For neutral media that allow a small amount of process gas to leak into the atmosphere and without pollution to the environment
● Nitrogen compressor, air compressor, carbon dioxide compressor and high speed multi-axial compressor, etc.
√ Seal gas supply：Gas from compressor discharge / external gas
√ Vent：To flare /to safe location
√ Separation gas supply：Nitrogen / instrument air, nitrogen preferred
S718
Single Dry Gas Seal
● Pressure：0~25.0MPa
● Temperature：-160~260℃
● Shaft Diameter：25~360mm
● Speed：≦160m/s，for higher speed, special design is required
√ Dry-running, contact-free operation, no friction
√ Single seal arrangement with compact shaft dimensions
√ Unidirectional or bidirectional available
√ Shrouded mating ring prevents secondary damage in the event of a mating ring fracture
√ The secondary seal with high-performance polymer seal provides better floatability and reliability
√ The auxiliary seal with high-performance polymer seal features excellent temperature resistance, pressure resistance and corrosion resistance
√ Cartridge design makes installation and removal easy
√ For neutral media that allow a small amount of process medium to leak into the atmosphere and without pollution to the environment
● Nitrogen compressor, air compressor, carbon dioxide compressor and high speed multi-axial compressor, etc.
● Seal gas supply：Gas from compressor discharge/ external gas
● Vent:To flare system/to safe location
● Separation gas supply：Nitrogen / instrument air, nitrogen preferred
S727
Double Dry Gas Seal
● Pressure：0~4.0MPa
● Temperature：-60~200℃
● Shaft Diameter：25~270mm
● Speed：≦160m/s，for higher speed, special design is required
√ Dry-running, contact-free operation, no friction
√ Double opposed seal arrangement
√ Unidirectional or bidirectional available
√ Shrouded mating ring prevents secondary damage in the event of a mating ring fracture
√ Cartridge design makes installation and removal easy
√ Capable of zero process gases emissions, with a small amount of nitrogen leaking into the compressor
√ For low-pressure process gas, not clean, toxic and/or harmful, strong corrosiveness
● Rich gas compressor, flare gas compressor, desorption compressor, etc
√ Buffer gas supply： nitrogen / process gas; nitrogen is preferred
√ Seal gas supply：Nitrogen / other inert gas, nitrogen is preferred
√ Vent：to safe location
√ Separation gas supply：Nitrogen / instrument air, nitrogen preferred
S728
Double Dry Gas Seal
● Performance Capabilities
● Pressure：0~4.0MPa
● Temperature：-160~260℃
● Shaft Diameter：25~360mm
● Speed：≦160m/s，for higher speed, special design is required
√ Preferred structure for high pressure, large shaft diameter and severe application conditions.
√ Dry-running, contact-free operation, no friction
√ Double opposed seal arrangement
√ Unidirectional or bidirectional available
√ Shrouded mating ring prevents secondary damage in the event of a mating ring fracture
√ The secondary seal with high-performance polymer seal provides better floatability and reliability
√ The auxiliary seal with high-performance polymer seal features excellent temperature resistance, pressure resistance and corrosion resistance
√ Cartridge design makes installation and removal easy
√ Capable of zero process gases emissions, with a small amount of nitrogen leaking into the compressor
√For low-pressure process gases, not clean, toxic and/or harmful, strong corrosiveness
● Rich gas compressor, flare gas compressor, desorption compressor, etc
√ Buffer gas supply: nitrogen / process gas; nitrogen is preferred
√ Seal gas supply：Nitrogen / other inert gas, nitrogen is preferred
√ Vent：to safe location
√ Separation gas supply：Nitrogen / instrument air, nitrogen preferred
S737
Tandem dry gas seal
● Pressure：0~10.0MPa
● Temperature：-60~200℃
● Shaft Diameter：25~270mm
● Speed：≦160m/s，for higher speed, special design is required
√ Dry-running, contact-free operation, no friction
√ Tandem seal arrangement. Primary seal acts as main seal, while secondary seal acts as safety seal
√ Unidirectional or bidirectional available
√ Shrouded mating ring prevents secondary damage in the event of a mating ring fracture
√ Both primary and secondary seals have the capability of full product pressure. In the event of an primary seal failure, the secondary seal acts as an installed spare with full pressure capability
√ No secondary seal gas supply(nitrogen) injection. Process gas has controlled the leakage across both sets of seal faces, and a small amount of process gas will leak from the secondary seal to the atmosphere
√ Cartridge design makes installation and removal easy
√ For applications without nitrogen supply where the process leakage gas needs to be recycled. It's a structure with relatively high safety and reliability
● LNG refrigerant compressors, Natural Gas Pipeline Compressor,etc.
√ Primary seal gas supply
√ Gas from compressor discharge/ external gas
√ Primary vent：Exhaust torch / recycling system/outdoor safety exhaust
√ Secondary vent：outdoor safety exhaust
√ Separation gas Nitrogen / instrument air, nitrogen preferred
S738
Tandem dry gas seal
● Pressure：0~25.0MPa
● Temperature：-160~260℃
● Shaft Diameter：25~360mm
● Speed：≦160m/s，for higher speed, special design is required
√ Preferred structure for high pressure, large shaft diameter and severe application conditions.
√ Dry-running, contact-free operation, no friction
√ Tandem seal arrangement. Primary seal acts as main seal, while secondary seal acts as safety seal
√ Unidirectional or bidirectional available
√ Shrouded mating ring prevents secondary damage in the event of a mating ring fracture
√ The secondary seal with high-performance polymer seal provides better floatability and reliability
√ The auxiliary seal with high-performance polymer seal features excellent temperature resistance, pressure resistance and corrosion resistance
Both primary and secondary seals have the capability of full product pressure. In the event of a primary seal failure, the secondary seal acts as an installed spare with full pressure capability
√ No secondary seal gas supply(nitrogen) injection. Process gas has controlled the leakage across both sets of seal faces, and a small amount of process gas will leak from the secondary seal to the atmosphere
√ Cartridge design makes installation and removal easy
√ For applications without nitrogen supply where the process leakage gas needs to be recycled. It's a structure with relatively high safety and reliability
● LNG refrigerant compressors, Natural Gas Pipeline Compressor, etc.
√ Primary seal gas supply：Gas from compressor discharge/ external gas
√ Primary vent
√ To flare system / recycling system / to safe location
√ Secondary vent：to safe location
√ Separation gas supply：Nitrogen / instrument air, nitrogen preferred
S747
Tandem dry gas seal with intermediate labyrinth
● Pressure：0~10.0MPa
● Temperature：-60~200℃
● Shaft Diameter：25~270mm
● Speed：≦160m/s，for higher speed, special design is required
√ Dry-running, contact-free operation, no friction
√ Tandem seal arrangement. Primary seal acts as main seal, while secondary seal acts as safety seal
√ Unidirectional or bidirectional available
√ Shrouded mating ring prevents secondary damage in the event of a mating ring fracture
√ Both primary and secondary seals have the capability of full product pressure. In the event of an primary seal failure, the secondary seal acts as an installed spare with full pressure capability
√ Secondary seal gas supply (nitrogen) injection is available. Nitrogen has controlled the leakage across the seal face of secondary seal and no process gas leaks from the secondary seal to the atmosphere.
√ Cartridge design makes installation and removal easy
√ For most applications where neither process gas can leak to the atmosphere, nor external nitrogen can go into the compressor, which is a structure with the highest safety and reliability.
● Cracking gas compressor, propylene compressor, ethylene compressor, natural gas compressor, cycle hydrogen compressor, cycle gas compressor, ammonia
√ Primary seal gas supply：Gas from compressor discharge/ external gas
√ Primary vent：To flare system / recycling system /to safe location
√ Secondary seal gas supply：Nitrogen
√ Secondary vent：to safe location
√ Separation gas supply：Nitrogen / instrument air, nitrogen preferred
S749
Tandem Dry Gas Seal with Intermediate Labyrinth for Centrifugal Compressor
● Pressure：≤40MPa
● Temperature：-160~260℃
● Shaft Diameter：25~220mm
● Speed：≤50000r/min
● Sliding Velocity：≤180m/s
The limit values of the above parameters are not met at the same time, and the special design will be considered for special applications.
● Suitable for over-high pressure, high temperature, high speed, and demanding applications.
● Non-contactrunning.
● Unidirectional grooves and bidirectional grooves are available.
● The outer circle of the seat is designed to be surrounded to effectively reduce the damage to the other parts caused by the fragmentation of the seat.
● Two sets of pairs are arranged in tandem, with the primary seal being the main seal and the secondary seal being the safety seal.
● The auxiliary seal adopts a high-performance polymer seal which has good temperature resistance, pressure resistance and corrosion resistance.
● Both stages of the seal can withstand the full pressure of the medium, and after the failure of the main seal, the safety seal can still operate under the full pressure of the medium.
● 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.
● Assembly structure makes it easy to install and disassemble.
● 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.
● Gas storage natural gas compressor
● Recycle hydrogen compressor
● Oilfield reinjection gas compressor
● A Primary seal gas supply-------From compressor discharge，External gas
● B Primary leakage gas-----------Vent to flare，Vent to safelocation
● C Secondary seal gas supply----Nitrogen
● D Secondary leakage gas--------Vent to safe lacation
● E Separation gas supply---------Nitrogen/Instrument air，nitrogen is preferred
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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.
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