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A hydrodynamic seal is a type of mechanical seal. A hydrodynamic seal uses a dynamic rotor with grooves that act as a pump and create an air film that the opposing sealing surface will ride on. A hydrodynamic seal performs better than hydrostatic seals by providing greater film stiffness, lower leakage and lower lift off speeds.
A hydrostatic seal is a non-contacting mechanical seal that operates under an equilibrium of forces. Unlike traditional hydrodynamic seals , hydrostatic seals have two different pressure zones that are used to establish a balanced pressure zone between two seal faces. [ 1 ]
Weatherstripping around openings – especially doors and windows – is used in buildings to keep out weather, increase interior comfort, lower utility bills, [2] and reduce noise. Builder weatherstripping can be made from felt; [ 3 ] vinyl, rubber, or poly foam; [ 2 ] [ 3 ] EPDM cellular rubber and vinyl tubing; [ 4 ] and metals such as brass ...
Bonded seal, also known as Dowty seal or Dowty washer. A type of washer with integral gasket , widely used to provide a seal at the entry point of a screw or bolt [ 2 ] [ 3 ] Bridgman seal , a piston sealing mechanism that creates a high pressure reservoir from a lower pressure source
A gasket is a mechanical seal which fills the space between two or more mating surfaces, generally to prevent leakage from or into the joined objects while under compression. It is a deformable material that is used to create a static seal and maintain that seal under various operating conditions in a mechanical assembly. [1]
A static hydraulic seal is located in a groove and sees no movement - only sealing within its confined space, acting like a gasket. To achieve this the gasket should be under pressure. The pressure is applied by tightening of the bolts. Examples of static seals include O-rings, flange seals, and cover seals. Dynamic