Balanced Multi-Spring Cartridge Mechanical Seal

Description; 

The SC630 is a single, balanced cartridge mechanical seal engineered for reliable sealing performance across a broad spectrum of industrial rotating equipment operating in demanding process environments. Designed as a pre-assembled cartridge unit, the SC630 minimizes installation errors, simplifies maintenance procedures, and ensures consistent face alignment under fluctuating pressure and temperature conditions. The balanced seal geometry reduces face loading and heat generation, improving seal stability and extending operational life in both clean and moderately contaminated services. 

 

Built for versatility and operational reliability, the SC630 is suitable for centrifugal pumps, process pumps, industrial blowers, mixers, and other rotary equipment operating in chemical processing, petrochemical, food and beverage, pharmaceutical, oil and gas, steel, mining, pulp and paper, power generation, water treatment, chilling plants, and solvent handling systems. The seal is compatible with a wide range of process fluids including hydrocarbons, chemicals, solvents, water-based media, and light slurry services, making it a dependable sealing solution for continuous industrial operation. 

 

Key Features; 

• Serviceable and refurbish-able construction contributes to lower lifecycle cost and improved long-term asset value. 

• Rotation-independent design allows reliable operation regardless of shaft rotation direction, improving application versatility. 

• Metric and inch size availability ensures compatibility with globally used equipment standards and installation requirements. 

• Robust single seal arrangement is suitable for clean and lightly contaminated fluids in a broad range of industrial pumping applications. 

• Engineered spring system, including multiple spring or wave spring configurations where specified, provides uniform closing force and stable face tracking. 

• Internal seal configuration enhances lubrication at the seal faces while supporting pressure capability and protection against process-side contamination. 

• Factory pre-set, assembled, and performance-tested construction ensures consistent quality, reliable operation, and minimized equipment downtime. 

• Wide material selection for seal faces and elastomers enables optimized chemical compatibility across diverse process fluids and operating environments. 

• Optional flush and quench connections are available to suit services requiring enhanced cooling, contamination control, or auxiliary support systems. 

• Cartridge-mounted single seal design simplifies installation, eliminates critical setting errors, and reduces maintenance time during commissioning and replacement. 

• Compact, application-friendly design supports integration with pumps manufactured to widely used ANSI, DIN, and ISO dimensional practices, depending on configuration. 

• Hydraulically balanced sealing geometry reduces seal face loading and heat generation, delivering improved thermal stability and dependable performance under pressure fluctuations. 

 

Service Overview; 

Parameter	Value
Equipment	Centrifugal pumps, process pumps, industrial blowers, mixers, rotary equipment
Fluid	Chemicals, hydrocarbons, solvents, water, light slurry, process fluids
Service Nature	General process, chemical, petrochemical, utility, industrial duty
Operating Mode	Continuous industrial operation

 

Specifications; 

Item	Min	Max	Typical / Notes
Shaft Size	20 mm (0.750”)	300 mm (12.000”)	Standard metric & imperial sizes
Pressure	Vacuum	40 bar (580 psi)	Depending on operating conditions
Temperature	-40°C (-40°F)	+220°C (+428°F)	Based on elastomer selection
Speed	—	3600 RPM	Higher speeds available on request

 

Materials; 

Component	Standard Material	Optional Material	Comment
Seal Faces	Carbon vs Silicon Carbide	Silicon Carbide vs Silicon Carbide / Tungsten Carbide	Selected according to fluid abrasiveness
Elastomers	FKM (Viton)	EPDM / PTFE / FFKM	Chemical compatibility dependent
Metal Parts	SS 316	Hastelloy / Duplex SS / Alloy 20	Corrosion-resistant options
Springs	SS 316	Hastelloy	Suitable for corrosive services

 

Applications; 

• Chemical process pumps 

• Oil and gas process pumps 

• Pulp and paper stock pumps 

• Power plant auxiliary pumps 

• Petrochemical and refinery equipment 

• Food and beverage processing systems 

• Industrial blowers and rotary machinery 

• Pharmaceutical manufacturing equipment 

• Water and wastewater treatment systems 

• Chilling plants and solvent transfer systems 

• Steel and mining industry rotating equipment 

 

Operating Limits; 

Parameter	Value
Pressure	Up to 40 bar (580 psi)
Temperature	-40°C to +220°C (-40°F to +428°F)
Speed	Up to 3600 RPM
Size Range	20 mm to 300 mm (0.750” to 12 .000”)

 

Engineering Note: Operating parameters shown are typical industrial values inferred for balanced single cartridge mechanical seals. Final selection should be verified against actual service conditions, fluid properties, equipment configuration, and applicable API/ANSI requirements.