Hydraulic seal


Hydraulic seal

{ [refimproveA hydraulic seal is a relatively soft, non-metallic ring captured in a groove or fixed in a combination of rings, forming a seal assembly, to block or separate fluid in reciprocating motion applications. Hydraulic seals are vital in machinery. Their use is critical in providing a way for fluid power to be converted to linear motion.

Materials

Hydraulic seals can be made from a variety of materials such as polyurethane, rubber or PTFE. The type of material is determined by the specific operating conditions or limits due to fluid type, pressure, fluid chemical compatibility or temperature.

tatic

A static hydraulic seal is located in a groove and sees no movement - only sealing within its confined space, acting like a gasket.

Dynamic

A type of dynamic hydraulic seal called a rod seal is exposed to movement on its inner diameter along the shaft or rod of a hydraulic cylinder. A type of dynamic hydraulic seal called a piston seal is exposed to movement on its outer diameter along the tube or bore of a hydraulic cylinder.


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • hydraulic seal — hidraulinis uždoris statusas T sritis fizika atitikmenys: angl. hydraulic seal; hydraulically operated gate vok. hydraulischer Verschluß, m rus. гидравлический затвор, m pranc. fermeture à joint hydraulique, f; fermeture hydraulique, f; vanne… …   Fizikos terminų žodynas

  • Hydraulic machinery — are machines and tools which use fluid power to do work. Heavy equipment is a common example.In this type of machine, high pressure hydraulic fluid is transmitted throughout the machine to various hydraulic motors and hydraulic cylinders. The… …   Wikipedia

  • Hydraulic cylinder — A Hydraulic cylinder (also called a linear hydraulic motor) is a mechanical actuator that is used to give a linear force through a linear stroke. It has many applications, notably in engineering vehicles. Operation Hydraulic cylinders get their… …   Wikipedia

  • Fuse (hydraulic) — In hydraulic systems, a fuse is a component which prevents the sudden loss of hydraulic fluid pressure. It is a safety feature, designed to allow systems to continue operating, or at least to not fail catastrophically, in the event of a system… …   Wikipedia

  • Radial shaft seal — Radial shaft seals are used to seal rotary elements, such as a shaft or rotating bore. Common examples include strut seals, hydraulic pumps seals, axle seals, power steering seals, and valve stem seals. Early radial shaft seals utilized rawhide… …   Wikipedia

  • O-ring boss seal — An O Ring boss seal is a technique for joining two fluid carrying pipes, hoses or tubing. In an o ring boss (abbreviated ORB) system, a male threaded part is inserted into a female threaded part, providing a mechanical seal. This system differs… …   Wikipedia

  • Center seal — Cen ter seal, or Centre seal Cen tre seal (Gas Manuf.) A compound hydraulic valve for regulating the passage of the gas through a set of purifiers so as to cut out each one in turn for the renewal of the lime. [Webster 1913 Suppl.] …   The Collaborative International Dictionary of English

  • Centre seal — Center seal Cen ter seal, or Centre seal Cen tre seal (Gas Manuf.) A compound hydraulic valve for regulating the passage of the gas through a set of purifiers so as to cut out each one in turn for the renewal of the lime. [Webster 1913 Suppl.] …   The Collaborative International Dictionary of English

  • Wiper seal — A wiper seal is an axial seal that creates a seal while allowing a reciprocating shaft to pass through the seal s inner bore. Wiper seals are often used for fluid containment and to prevent dirt from entering a reciprocating shaft mechanism.Wiper …   Wikipedia

  • cup seal — Synthetic rubber seal with a single lip used for sealing hydraulic and pneumatic pistons …   Dictionary of automotive terms