Description;
The SC600 / SC605 is a robust single cartridge mechanical seal engineered for high reliability and straightforward installation on pumps and rotating equipment. Supplied as a fully pre‑assembled cartridge unit with pre‑set working length, the seal can be installed without on‑site setting or alignment, significantly reducing installation time, downtime and the risk of assembly‑related failures.
This series is available in single‑spring balanced and unbalanced configurations, tailored for handling light slurries, viscous fluids, crystallising media and low‑solids suspensions in demanding industrial services. In the balanced version, hydraulically optimised face geometry reduces net closing force at elevated pressures, improving thermal stability, lowering face wear and extending service life. The rugged single‑spring construction offers generous cross‑sectional clearances, helping to resist clogging and buildup in slurry and viscous applications while maintaining reliable lubrication at the seal faces.
The seal is particularly well suited for wastewater treatment plants, steel and sugar factories, chemical processing units, general industrial process equipment handling contaminated or mildly abrasive media. Across these services, users benefit from plant‑wide standardisation: a single, rugged cartridge design that simplifies seal selection, installation and refurbishment, helping to lower inventory, reduce unplanned downtime and improve overall equipment reliability.
Key Features;
- Single, factory‑preset cartridge mechanical seal for fast, error‑free installation and easy removal.
- Balanced and unbalanced single‑spring designs suitable for light slurries, viscous fluids, crystallising media and wastewater services.
- Hydraulically optimised geometry reduces heat generation, improves thermal stability and extends seal life under demanding conditions.
- Metric and inch shaft sizes with optional flush / quench connections, allowing integration with plant seal support systems and global pump standards.
Service Overview;
| Parameter | Value |
| Equipment | Process pumps, slurry pumps, mixers, agitators, wastewater pumps |
| Fluid | Light slurries, viscous liquids, wastewater, sewage, low-solids suspensions |
| Service Nature | Abrasive, viscous, crystallizing, contaminated fluids |
| Operating Mode | Continuous industrial process duty |
Specifications;
| Item | Min | Max | Typical / Notes |
| Shaft Size | 20 mm (0.750”) | 100 mm (4.000”) | Metric & imperial sizes available |
| Pressure | Vacuum | 12 bar (174 psi) | Balanced design recommended for higher pressure |
| Temperature | -20°C (-4°F) | +180°C (+356°F) | Depends on elastomer selection |
| Speed | — | 3600 RPM | Based on shaft size and service conditions |
Materials;
| Component | Standard Material | Optional Material | Comment |
| Seal Faces | Carbon / Silicon Carbide | Tungsten Carbide / Silicon Carbide | Suitable for slurry & viscous duties |
| Elastomers | FKM (Viton) | EPDM / PTFE / FEP Encapsulated | Based on chemical compatibility |
| Metal Parts | SS 316 | Duplex SS / Hastelloy / Alloy 20 | Corrosion-resistant construction |
| Springs | SS 316 | Hastelloy | For corrosive or contaminated services |
Applications;
- Sewage and sludge transfer systems
- Power plant utility and slurry services
- Steel industry auxiliary process pumps
- Water and wastewater treatment pumps
- Crystallization and suspension handling systems
- Pulp & paper stock pumps and process equipment
- Low-solids slurry and viscous media circulation pumps
- Chemical process pumps handling viscous or contaminated media
Operating Limits;
| Parameter | Value |
| Pressure | Up to 12 bar (174 psi) |
| Temperature | -20°C to +180°C (-4°F to +356°F) |
| Speed | Up to 3600 RPM |
| Size Range | 20 mm to 100 mm (0.750” to 4.000”) |
Engineering Note: Operating limits and material combinations should be verified against actual process chemistry, solids concentration, viscosity, and shaft operating conditions prior to final selection. Balanced and unbalanced configurations should be selected based on pressure, vapor pressure, and lubrication characteristics of the process fluid.








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