Cartridge Mechanical Seals

Mechanical Seals for any application

We offer a range of standard inventory cartridge mechanical seals, including single and double seals to suit even the most demanding application and thanks to our modular design system we offer them with the best on-time delivery performance in the industry.

For unusual applications our Standard Plus seal range offers all the benefits of a standard seal while meeting our customer’s specific needs. This covers competitor replacement seals, seals designed for specific pumps and seals designed for pumping specific processes. 

Proven Design - Cartridge Construction

Cartridge mechanical seal construction is a proven reliability improvement. The seals are pre-assembled at the factory, pressure tested and shipped as a unit, leading to improved performance as errors due to incorrect installation are reduced. Cartridge construction eliminates the need to measure and set spring compression, and having a mechanical seal pre-assembled means that the seal faces are protected from damage during installation.

Cartridge seal range

For more information about seal types, and the advantages of seals over gland packing, see our Seal Technology Training Video


Use the navigation menu to filter through the product range, or take a look at some of our featured products below.


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Heavy Duty Slurry Seal


Heavy Duty Slurry Seals

The HDSS and HDDSS heavy duty slurry seals are designed for the arduous environment of the mining industry. The robust seals are built to withstand levels of pump vibration with large internal clearances accommodating levels of movement.

Pulp & Paper Double Screen Seal


Pulp & Paper Double Screen Seal

The IADC™ Screen seal design is a double seal available in a wide range of seal face and elastomer applications to suit individual process requirements. This seal is used on screens and knotters.

Pulp & Paper Screen Application Seal


Pulp & Paper Screen Application Seal

This seal employs standard, modular, inventoried AESSEAL­­® components, with a seal gland, which retains fluid when the screen is emptied. This avoids dry running of the tungsten carbide seal faces on equipment start-up.

Inflatable Shut off Seal


Inflatable Shut off Seal

The ISOS™ (inflatable shut-off seal) is fitted between the pump and and radially-divided seal, to form a separate seal when required, allowing the quick and easy removal of the mechanical seal.  

non-metallic process pump seal


L-Series Seal

The LSEAL™ is designed to suit the Flowserve Polychem 'L' Series, Group I and Group II non-metallic process pumps.

Modular Mixer Seal Range


Modular Mixer Seal Range

Mixer, agitator and reactor applications vary from simple blending to solid dissolution to the more exacting standards of suspension, gas dispersion or containing/promoting chemical reactions.

Progressive Cavity Pump Seal


Progressive Cavity Pump Seals

The AESSEAL Progressing Cavity Pump mechanical seal (PCPS™) has been developed to incorporate proven modular designs from our highly-acclaimed range of single and double mechanical seals.