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2. Hydraulic cylinder - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_cylinder

   A hydraulic cylinder is the actuator or "motor" side of this system. The "generator" side of the hydraulic system is the hydraulic pump which delivers a fixed or regulated flow of oil to the hydraulic cylinder, to move the piston. There are three types of pump widely used: hydraulic hand pump, hydraulic air pump, and hydraulic electric pump.

3. Hydraulic seal - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_seal

   Hydraulic Piston seals prevent fluid from crossing the area of the piston head. Rod seals ensure that fluid does not leak from the cylinder and adequate pressure is maintained. Wiper seals are installed to prevent contamination from entering the hydraulic system. [2] A rod seal prevents leakage of hydraulic fluid to the outside of the sealing ...

4. Shutdown valve - Wikipedia

   en.wikipedia.org/wiki/Shutdown_valve

   Hydraulic cylinder; Electro-hydraulic actuator; In addition to the fluid type, actuators also vary in the manner in which the energy is stored to operate the valve on demand as follows: single-acting cylinder - Or spring return where the energy is stored by means of a compressed spring; double-acting cylinder - Energy is stored using a volume ...

5. O-ring - Wikipedia

   en.wikipedia.org/wiki/O-ring

   Installation damage – This is caused by improper installation of the O-ring. Spiral failure – Found on long-stroke piston seals and – to a lesser degree – on rod seals. The seal gets "hung up" at one point on its diameter (against the cylinder wall) and slides and rolls at the same time.

6. Rotary union - Wikipedia

   en.wikipedia.org/wiki/Rotary_union

   Other designs include an elbow port, which causes the material to flow out at an angle, and multiple ports. A multiple port rotary union looks like a perforated cylinder. At the end of the cylinder is a threaded screw with a seal or seals that lock on to it. The material being transferred flows into the cylinder and out of the input holes.

7. Labyrinth seal - Wikipedia

   en.wikipedia.org/wiki/Labyrinth_seal

   Indeed, many gas turbine engine seals leak by design. [4] Labyrinth seals are also found on pistons, which use them to store oil and seal against high pressure during compression and power strokes, as well as on non-rotating shafts. In these applications, it is the long and difficult path and the formation of controlled fluid vortices plus some ...