Growing environmental awareness, and legislation to avoid fugitive emissions, as well as safety considerations are increasing the need for pressurised double seal installation.
All pressurised double seals require a controlled sealant supply to provide the necessary cooling and lubrication for long seal life.
Equally, the performance and integrity of any pressurised double seal is directly related to the selection and installation of the best sealant system for the application.
When deciding on the type of sealant system, it is necessary to take into account not only the duty parameters, but also many other features of the installation.Sealant systems can generally be classified into two distinct groups :
- Vessel or thermosyphon type systems
- Pumped or forced circulation type system