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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DISP - Double Stationary Seal with Pumping Scroll


Double Stationary Seal with Pumping Scroll

The DISP™ range double stationary mechanical seals provide highly-technical, value-engineered sealing solutions applicable for all industry sectors. The seal incorporates an integral bi-directional flow inducer for effective seal cooling.

Non-Metalic Mechanical Seal


Non-Metalic Mechanical Seals

The DSNM™ is designed to suit the Flowserve Polychem 'S' Series non-metalic process pump.

DSWIB - Double Mixer Seal


Double Mixer Seal

The DSWIB™ (Mixmaster II) is a double mixer seal with integral bearing and concentric face design to reduce the seal's overall length. The seal is offered with the following features:


External Mixer Seal


External Mixer Seal

The AESSEAL ESM (external seal for mixers) is a unit external seal designed for ease of installation as the seal faces are clipped together and dispatched assembled in a leak-free state.

Flue Gas Desulphurization Seal


Flue Gas Desulphurization Seal

The FGDSS™ (Flue Gas Desulphurization Single Slurry) single mechanical seal is designed to seal Flue Gas Desuphutization (FGD) and general slurry applications.

Richter PCK & SCK Seal


Richter PCK & SCK Seal

The FI-DSNM-R™ is designed to suit Richter (ITT-Goulds) PCK and SCK process pumps. This unique cartridge design eliminates the OEM ceramic sleeve.

Flow Induced Dual Cartridge Seal


Bi-Metal FIDC™ - Flow Induced Dual Cartridge

The FIDC seal is the next generation of high performance sealing solutions offering increased barrier fluid flow for improved reliability.