Generally, hydraulic type seals are considered to be non-metallic, soft rings that are fixed within combination of rings thus creating a seal assembly shape. They may also be captured in groves. Their function is to separate or block fluid in different reciprocating motion applications. These seals do play a crucial role in machinery. They offer fluid power that gets converted into linear motion. Materials used for construction Different types of materials can be used to construct hydraulic seals like PTFE, rubber or polyurethane. The material type used in its construction tends to determine the operating conditions. It may even specify the limitations caused by fluid temperature, fluid chemical compatibility, pressure and fluid type. Static hydraulic type seal is present within the groove without any movement. It only seals within a confined space, thereby functioning like a gasket. Rod seals They are a vital element found within the cylinder sealing system. These seals are designe