Flowserve ISC2 Mechanical Seals
Designed to maintain seal integrity under fluctuating pressures, temperatures, and agressive process conditions.
Designed for the safe handling of toxic, aggressive and flammable liquids in demanding chemical processes, eliminating the need for mechanical seals and external flushing systems while improving reliability and reducing the risk of leakage in critical applications.
Dual Cartridge Seals for Hazardous and Critical Process Applications
Process Containment Solutions (PCS) supplies and supports Flowserve ISC2 dual cartridge mechanical seals for demanding industrial services where leakage prevention, safety, and long-term reliability are non-negotiable.
The ISC2 seal range is engineered for chemical, petrochemical, mining, and industrial process duties involving hazardous, corrosive, or environmentally sensitive fluids. PCS ensures each ISC2 seal is correctly specified, installed, and supported to suit real operating conditions in South African plants.Â
Features & Benefits
Designed for Durability. Engineered for Excellence.
Built to perform in tough South African conditions, from high-viscosity biofuels to abrasive slurries and corrosive chemical applications.
API 682 & ISO 21049 Compliance
Meets international standards for operational safety, process integrity, and long-term performance in regulated environments.
Dual Balanced Seal Faces
Supports both forward and reverse pressure operation, ensuring maximum sealing integrity even in system upsets.
Advanced Thermal Management
Unique graphite-based technology tolerates dry running and cavitation, significantly reducing heat-related seal failures.
High-Efficiency Barrier Fluid Circulation
Optimised dual seal design with volute groove technology for enhanced cooling and lubrication in demanding dual-seal applications.
Robust Construction Materials
Available in Alloy C-276, Titanium, 316 Stainless Steel, and other corrosion-resistant options to handle chemically aggressive media.
Industry Coverage Across Sectors
Ideal for pulp & paper, water treatment, mining, biofuels, and chemical processing, with proven success in the South African industrial landscape.
Versatile Configuration Options
Offered in single pusher, single metal bellows, dual pusher, and dual metal bellows configurations to suit a wide range of pump types.
High Torque Drive Mechanism
Square-head drive pins deliver triple the torque load of competitor seals, protecting seal faces and extending service life.
Safe Leakage Management
A fixed carbon throttle bushing on single seals diverts potential leakage safely to drain, protecting both workers and the environment.
Industry Coverage Across Sectors
Ideal for pulp & paper, water treatment, mining, biofuels, and chemical processing, with proven success in the South African industrial landscape.
Typical Applications
Flowserve ISC2 mechanical seals are commonly used in:
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Chemical processing and transfer systems
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Petrochemical and refinery services
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Acid, caustic, and solvent handling
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Toxic or hazardous liquid applications
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High-temperature or pressure-variable processes
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Applications requiring emissions control and leakage prevention
PCS evaluates each application to confirm seal arrangement, materials, and barrier system compatibility before recommendation.
What Is the Flowserve ISC2 Mechanical Seal?
The ISC2 is a dual, pusher-type cartridge mechanical seal designed in accordance with API 682 standards for hazardous service. It provides a pressurised barrier system that prevents product leakage and protects the seal faces under fluctuating pressure and temperature conditions.
This design makes the ISC2 suitable for zero-emissions strategies, safety-critical processes, and applications where seal failure would result in environmental, operational, or compliance risk.
The ISC2 seal is designed to perform reliably in harsh, continuous-duty environments.
Key features include:
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Dual cartridge configuration for enhanced containment
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API 682-compliant design options
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Robust pusher seal architecture
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Materials selected for chemical compatibility and wear resistance
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Stable operation under pressure and temperature fluctuations
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Compatibility with API Plan barrier fluid systems
These features support predictable seal performance and extended service life when correctly applied.
Local Technical Support in South Africa
PCS provides local technical support for Flowserve ISC2 mechanical seals across South Africa, supporting both new installations and existing systems.
Support capabilities include:
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Seal selection and application guidance
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Installation support and best-practice advice
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Mechanical seal inspection and fault analysis
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Spares supply and refurbishment coordination
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Maintenance planning and reliability improvement
Local support ensures faster response times, improved uptime, and reduced operational risk for critical process equipment.
Engineered to Withstand the Pressure, Reliable Sealing Solutions for Demanding South African Industries
Say Goodbye to Costly Downtime, Seal Failures and Environmental Risk
In South Africa’s high-pressure industrial landscape, from chemical processing plants and pulp mills to wastewater facilities and mining operations, equipment reliability isn’t just preferred, it’s essential. The Flowserve ISC2 series, available from PCS, offers an advanced line of mechanical cartridge seals built to thrive in tough, variable conditions.
Whether you're dealing with corrosive media, aggressive fluids, or frequent startups and shutdowns, these seals are designed to reduce leakage, extend maintenance intervals, and help your operation stay compliant with environmental and safety standards.
Speak to PCS About Innomag® Pump Applications
If your operation requires leak-free, safety-critical fluid handling, PCS can assist with selecting and supporting the correct Flowserve HPX mag drive pump configuration for your process.
Contact Process Containment Solutions to discuss your application requirements and operating conditions.