API Plan 53A

Our plan 53A meets all the requirements of API 682.

The Seal Pots design is modular allowing us to supply various combinations of instruments and components to meet the needs of the seal, your process and site conditions.  One of our standard designs lowers the nitrogen regulator, and pressure instruments to the bottom head of the reservoir to facilitate maintenance.  Scaffolding, ladders, and stairs are not required to maintain the system. 

Standard options include built in refill pumps, slide brackets, transmitters, switches, and alternate cooling. 

Features: Elliptical 3 Gallon or 5 Gallon Reservoirs

The Plan 53A range meet all the requirements to supply mechanical seals in accordance with the API 682 guidelines. The vessels are equipped with all essential connections for fitting additional components. The range is available in two standard vessel sizes with ellipsoidel heads; a version, which can be dismantled is also available as an option. The modular system allows the Plan 53A vessels to be combined with a wide range of system components such as level switch/transmitter, pressure switch/transmitter, base frame, air cooler and recirculating pumps.


  • Operating limits up to 50 bar / 200°C: suitable for a wide range of demanding operating conditions
  • Robust design with weld-pad type sight-glass for optimum visual level monitoring
  • Modular system: supports the addition of optional equipment or remote mounts for higher pressure applications
  • A version which can be dismantled is also available as an option: for optimum and simple cleaning of the vessel interior

Recommended Applications

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

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.