Description
Sulzer Mechanical seals and accessories Element seals -Optimal seal solution for AHLSTAR pumps
Key Technical Specifications:
| SI units | US units | |
| Pmax | 16 bar | 232 psi |
| Vmax | 10 m/s | 33 ft/s |
| Tmax | 140°C | 284°F |
| Seal surface | SiC/SiC | SiC/SiC |
| O-ring | EPDM or FKM | EPDM or FKM |
| Material | 316 Stainless Steel (EN 1.4401, EN 1.4436) or Duplex EN 1.4462 | 316 Stainless Steel (EN 1.4401, EN 1.4436) or Duplex EN 1.4462 |
Why Choose Sulzer Element Mechanical Seals?
Sulzer Element Seals provide a flexible , service-friendly sealing solution where only the worn sealing elements are replaced instead of the entire seal assembly. This approach reduces spare parts cost , minimizes waste , and shortens maintenance time while preserving the existing seal housing and hardware. Designed to fit seamlessly into Sulzer pumps , element seals maintain the original performance and reliability while offering cost-effective lifecycle management.
Key Technical Specifications
Seal Format: Replacement element kit for in-situ refurbishment of mechanical seals
Design Principle: Maintains existing gland and sleeve while replacing core sealing faces, springs, and secondary seals
Materials & Options:
Seal faces in silicon carbide , tungsten carbide , or carbon graphite for optimal wear resistance
Elastomer options (Viton , EPDM , FFKM) for compatibility with a wide range of fluids
Springs and metal parts in stainless steel or high-alloy grades for durability
Precision Fit: Machined to exact tolerances to ensure alignment with the existing seal hardware
Ease of Assembly: Supplied with all necessary components for straightforward on-site replacement
Operating Limits
Shaft Diameter: Matches the original seal configuration (typically 25 mm – 150 mm)
Pressure Rating: up to 25 bar(g) depending on seal design
Speed: up to 25 m/s
Temperature Range: –20 °C to +200 °C (material dependent)
Typical Applications
Sulzer centrifugal and process pumps where the seal housing and hardware remain in serviceable condition
Industrial plants aiming to reduce total sealing costs and downtime
Chemical , petrochemical , and water industry applications with predictable maintenance cycles
Situations where rapid seal refurbishment is preferred over full seal replacement
Additional Features
Cost-effective maintenance solution—replace only the sealing elements , not the full unit
Reduces environmental impact by minimizing waste from discarded hardware
Maintains original performance and reliability of the pump’s sealing system
Compatible with single , double , and cartridge-type seal configurations
Factory-quality components ensure restored sealing efficiency
