When lubricant begins leaking from hydraulic equipment, sumps or pumping systems, the chances are that the incorrect hydraulic seals were selected, installed poorly, maintained improperly or the wrong seals are being used for the application at hand.
Anyone in charge of the maintenance of hydraulic equipment needs to pay attention not only to where replacement hoses are sourced from, but also ask questions about how those hoses are stored, cleaned and made before ever installing them on a piece of equipment. The reason that understanding these items is so important is because of how common an occurrence the need for hose replacement is.
The conversion of a hydraulic system to fire-resistant fluids is something that should be considered very carefully. This is because modifications will need to be made before conversion can occur, even when only converting to one fire-resistant fluid from another. As well, each type of fire-resistant fluid has unique characteristics, which can affect even those systems which are already using one type.
Among the many types of hydraulic seals that exist in your system, the lip seal is of particular importance where contamination needs to be controlled. Unfortunately, it is also a component which can require frequent replacement. It can even be the reason that a system needs to be taken out of service due to leaks.