API Plan 53C

Plan 53C is used for applications where products have high pressure and are harmful/hazardous.


The plan 53C range is combined with a cooler to track signal pressure and automatically adjust to the seal chamber pressure. 


  • Pressurization is by means of tracking a pressure signal
  • Safe operation even in case of pressure changes
  • Barrier pressure is created without any need for connection to a nitrogen supply
  • Available with finned tube, water or air coolers with fan
  • Modular system: combination with a wide range of system components/instruments possible

Recommended applications

  • Petrochemical industry
  • Chemical industry
  • Oil and gas industry
  • Refining technology



Seal Pots Reservoirs offer full compliance with ANSI and API 682 3rd Edition, providing reliable and robust designs for maximum performance.

Heat Exchangers

Seal Pots heat exchangers are utilized for the efficient heat transfer from one medium to another.  High efficiency cooling coils are available for both liquid to liquid and air to liquid cooling. 

Engineered Fluid Systems

Our systems are simple, robust, flexible and reliable. We place great emphasis on manufacturing equipment to operate 24/7. 

Dry Gas Seal Panels

Once a seal configuration has been selected, a panel is designed to support the dry gas seal cartridge. The panel design must deliver sufficient volume of barrier gas at the appropriate pressure.