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.


For a quick view of all products, use the >  Product index

CDM - Cartridge Double for Mixers


Cartridge Double for Mixers

The CDM™cartridge double mechanical seal for mixers is available in a wide range of seal face, elastomer and alloy combinations, to suit individual applications.

Canister Double Monolithic Stationary Convection


Canister Double Monolithic Stationary Convection

The CDMSC™ is designed specifically for Mixer, Agitator and Reactor applications. Based on the modular technology of the DMSF™, this externally mounted cartridge seal incorporates many design features to help increase seal life.

CDP - Double Mechanical Seal


Double Mechanical seal

The AESSEAL CDP™/CDPN™ range of cartridge mechanical seals has been designed as high-performance sealing solutions for general applications.  

CDPH - Heavy-Duty Double Slurry Seal

CDPH Slurry Seal

Heavy-Duty Double Slurry Seal

The CDPH™ double mechanical seal is designed to meet the arduous requirements of slurry applications. Large ports and increased radial clearances enable the seal to maintain a stable fluid film...

CFC - High Performance Mechanical Seal


High Performance Mechanical Seal

These robust seals are designed for use on difficult applications, including oil pipeline pumping, water injection and boiler feed duties.

Double Stationary Seal


Double Stationary Seal Range

Stationary seal face technology to accommodate angular shaft to housing misalignment. Bi-directional flow induction (patent pending) for effective barrier heat removal



Glandless cartridge double 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.