The methods widely used today for selecting mechanical seals for a particular application have other interests at heart than providing the greatest possible benefit to you the user.
Isn't it time for a change?

THE PLANNING OR ENGINEERING OFFICE –
often specifies mechanical seal requirements simply as "seals" - without any detailed knowledge of individual design features and their implications. No wonder that such details are missing in the specifications.

THE OEM –
simply wants a mechanical seal which seals. And because all mechanical seals are designed to seal, the OEM will choose the version that costs him the least and promises to boost his spare part business, e.g. for shafts or sleeves. The shortest lifspans are good enough because a mechanical seal is a maintenance product and warranty claims on mechanical seals are expressly excluded in most cases.

THE USER –
and his maintenance department have exerted practically no influence on this process up to now. Mechanical seals are usually treated like every other wearing part: When one fails, it is replaced by a product specified by the OEM. It is precisely this strategy which helps the OEM to a good profit in his spare parts business. At the same time it has also left the user in the dark about important aspects of a mechanical seal's design, its components, their impact on a plant's operation and the costs incurred.

CONSEQUENTIAL DAMAGE
Users in all industries and of all sizes continue to accept unnecessary sacrifices in their production operations and profits due to seals with too short a service life and  shaft sleeves with avoidable wear.
Should OEM interests continue to dictate the magnitude of these factors? We think not.
The mechanical seal technology used in many companies has grown obsolete and creates unnecessary operational overheads and maintenance costs. It lies in the direct interest of every user to put an end to this state of affairs.
STOCK KEEPING COSTS
Every OEM has his preferred supplier or manufactures his own seals. The more pump versions used, the more mechanical seal types - with all manner of design features, materials and seal face pairings - which have to be kept in stock.
Stock volumes, costs, logistics and the pressure on pump maintenance personnel all grow to an unacceptable level. And each new project often brings more new units with more new seal designs.

WHY ELSE are packings still used on equipment with rotating shafts in spite of the considerable consequential damage they cause and in spite of them being completely uneconomical?	WHY ELSE are dynamic mechanical seals still being used (not even balanced versions!), in spite of their far from optimum lifespans and in spite of them scoring the shaft sleeves?	WHY ELSE do company's still keep stocks of mechanical seals in the most diverse versions, in spite of the capital this ties up unnecessarily?

It is known that 80 % of all pump repairs are owed to seal failure or sleeve wear and - as is immediately apparent when the seals are dismantled - the problem in nearly all cases lies with the design and materials of the seal used. The consensus in most companies is that the large number of different mechanical seals not only increases the amount of capital tied up in stocks but also contributes to mistakes in selection,  uncertainty during installation and mix-ups.

WHO PAYS THE BILL ?      YOU - THE USER !

DEPAC HAS THE SOLUTION

DEPAC has developed a completely new concept which replaces the old seal selection system with one in which the economic interests of the pump's owner or user take priority.
Its name: "POC Technology".

POC stands for "Pump Owner's Choice".
It conveys the belief that, given the necessary background knowledge, the owner of a pump would apply other seal selection criteria than those which an OEM would normally apply on his behalf.

AFTER INTENSIVE MARKET RESEARCH
DEPAC has reached the conclusion that:

In nearly all the companies analyzed from the most diverse branches of industry, up to 95% of their mechanical seals could be economically standardized using just 2 mechanical seals: DEPAC Types 270/ 301 and 322! From these findings DEPAC developed the POC program for interested users.

THE POC PROGRAM

supports the economical standardization of seals in conjunction with cutting-edge technology for
the best possible service life and performance.
The following ADVANTAGES should be weighed up carefully in all considerations:

• Only 2 types of mechanical seal, developed with state-of-the-art seal engineering for optimum life.
  
• No more sleeve wear due to packings or mechanical seals.
  
• Expensive spare parts and their stock keeping are now superfluous.
  
• Many seal variants now in stock can be dispensed with.
  
• Very easy installation thanks to cartridge technology, also when converting from packings to mechanical seals.
  
• Drastic reduction of stocks and tied-up capital.
  
• Seal installation errors are prevented.
  
• Productivity, efficiency and economy of maintenance are permanently improved.

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