Tamar Seals 

With Tamar seals you can seal those problem and impossible application that all other mechanical seal simply cannot  do and where  you are forced to use mechanical packing with poor results and limited life . The Tamar seal operates in  dry powders, slurries , thick or sticky mediums  it does not have any effect on the Tamar seal because it has no faces or springs that can be damaged.


Put us to the test - we guarantee all our seals 

How the Tamar seals work 

Why do mechanical seals fail ? 

In a conventional mechanical seals there are many factors that can cause a seal to fail but generally the dynamic seal (hard faces) or static seals ( O-rings or gasket)  fail creating a leak path.

In most cases it is the dynamic seals that fails, and this happens when the faces are damaged, or the seal is operated beyond their design specifications.

So how do mechanical seals get damaged and fail? again there are many reasons but for this discussion we will focus on the 2 main reasons.

  • No lubrication / coolant:  mechanical seals have hard faces that run against each other one rotary and one stationary, for a seal to run effectively it requires a thin film of fluid between the faces - this lubricates and cools the faces. If the pump runs dry or there is no pressure while the seal is running this film disappears quickly and the face heat up increasing the wear on the faces.

  • Solids in between the face: When mechanical seal operate in slurries or fluids that are very viscous these fluids will get in between the face and damage occurs because the particle between the two faces work like grinding paste (abrasive)  accelerating the wear of the faces or in extreme case the particle are so big the faces are held opened.

Why Tamar mechanical seals do not fail in slurries and powders  

Tamar seals do not have any hard faces so there is no faces that can be damaged or run dry, the seal works with a positive pressure friction design that ensures that no fluids, gas or contamination enters the stuffing box and is kept pressurised by a booster with sealant  that is powered by plant air, self-powered system or manual pump (screw type) where air is not available. The sealant lasts on average about 6 months before it needs to be refilled and this can be done while in operation so there is no down time.   

Applications where Tamar seals outperform conventional mechanical seals : 

  • Screw pumps

  • Agitator

  • Reactors

  • Mixer

  • Ribbon Mixer

  • Chocolate  

  • molasses

  • Black/ Red Liquor 

  • Cement

  • Slurries and dry powders 

  • Slurries  

  • Viscous fluids 

  • Gypsum

  • Strong Chemicals 

  • waste water 

Case histories - Tamar seals 



Dry screw pump connected to a hopper moving Cement 

Chocolate Mixer

Sealing a  Chocolate mixer - using FDA sealent  


Screw conveyor and mills in Gypsum industry 

0330 113 4924

For UK wide supply 


Kem-tron Sealing  LTD

Company registration #: 1133464

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Registered office address 

Suite 2a Blackthorn House, St Pauls Square


B3 1RL