Glandless cartridge single seal to suit Ahlstar UP pumps

The CKSA™ and CKDA™ seals are designed to fit the full six bearing frame range of the AhlstarUP pump models.

AESSEAL® is believed to be the only seal manufacturer to offer a fully integrated and glandless cartridge mechanical seal range for these pumps, which were launched by Sulzer in 2006.

The CKSA glandless cartridge single seal has been designed specifically for AhlstarUP pumps. The seal uses a multi-spring design that ensures the seal faces are evenly leaded and therefore improve seal life. The cartridge design makes installation simple and the seal can be retrofitted to existing pumps without modification. Monolithic seal face technology reduces distortion in both high and low temperature application increasing seal reliability.


  • Multi-spring energized
  • Cartridge design
  • Monolithic seal face technology

AHLSTARUP is a trademark of Sulzer Pumps

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Suitable for the following industries

  • Pulp and Paper Pump Seals