Definition - What does Hydraulic Seals mean?
Hydraulic seals are non-metallic rings which are primarily used to separate or block fluids in hydraulic equipment. These seals are similar to gaskets, which are circular in shape, and are made up of soft materials such as PTFE, rubber or polyurethane. The seals also form part of the vital components that seal the lubricating liquid or oil that helps hydraulic machines to function properly. Hydraulic seals can be static or dynamic.
Petropedia explains Hydraulic Seals
Hydraulic seals are very important components in any hydraulic machinery as they ensure that the hydraulic fluid whose energy is converted into linear motion during functioning of any hydraulic machine is tightly sealed.
These seals are generally ring-shaped but they can be manufactured according to the shape of equipment where they have to be fixed. Multiple seals are captured in a groove and are fixed on top of each other to form a seal assembly for the hydraulic equipment. Hydraulic seals are manufactured in three common types of materials, i.e., PTFE, rubber or polyurethane. The selection of these materials depends on several factors such as the fluid type, pressure rating, operating temperature, and chemical compatibility of fluid, etc.