In liquid, an elastic main body member, a partition member, and a diaphragm are inserted into an outer cylinder one by one, and the diaphragm is held down by a fixing ring and fixed by a claw. Then, the liquid adheres onto outer circumferential surfaces of the partition member and the diaphragm. Therefore, a first special seal for adhered liquid is provided in an elastic partition member of the partition member and also a second special seal for adhered liquid and a third special seal for adhered liquid are provided in the diaphragm, so as to provide a seal between each of the outer circumferential surfaces of the partition member and the diaphragm and the fixing ring, so that the adhered liquid is prevented from leaking outwardly as leaked liquid.

A film damper for a gas turbine engine includes an annular inner member and an annular outer member located radially outboard of the annular inner member, the annular outer member and the annular inner member defining a damper annulus therebetween. A fluid supply passage delivers a flow of fluid into the damper annulus from the annular outer member, and a backflow prevention device is located at the fluid supply passage to prevent backflow of the flow of fluid from the damper annulus into the fluid supply passage.

A seal guide unit for guiding and sealing a piston rod of a vibration damper having a first guide element and a second guide element fixedly connected to the first guide element and arranged coaxial to the first guide element, and a radially moveable piston rod seal arrangement arranged coaxially between the two guide elements and is at least indirectly surrounded in circumferential direction by at least one guide element, including a defined radial annular gap, and comes in at least indirect axial contact with at least one guide element. The piston rod seal arrangement includes a piston rod seal and a sliding element which encloses the piston rod seal in circumferential direction and axially limits the piston rod seal at least on one side. The sliding element has a lower friction coefficient than parts of the seal guide unit adjoin the piston rod seal arrangement.

A fluid-filled tubular vibration-damping device comprising: an inner shaft member and an outer tube member connected by a main rubber elastic body so as to provide a sealed zone filled with a non-compressible fluid therebetween; and a partition wall partitioning the sealed zone axially. An outer peripheral side of the partition wall is fixed to the outer tube member while an inner peripheral side of the partition wall is constituted by an annular partition wall rubber disposed around the inner shaft member in a movable manner axially. Sealing tube parts are integrally formed with an inner peripheral portion of the partition wall rubber and project toward axially opposite sides. Fitting parts thicker than the sealing tube parts are integrally formed with distal ends of the respective sealing tube parts and are externally fitted around the inner shaft member in a slidable manner.

A sealing structure allows for formation of a side lip, as well as a labyrinth structure between an oil seal and a torsional vibration damper, even when a reinforcing ring has a short inward flange part. The sealing body 120 includes a side lip 124 extending from near a distal end of an inward flange part 112 radially inward and further toward an air side (A) than a dust lip 122 to a position not as far as the outer circumferential surface of a tubular part 210. An annular member 250 is further provided, which is fixed to the outer circumferential surface of the tubular part 210 further on the air side (A) than the side lip 124 and covering an outer circumferential surface of the side lip 124 such that there is a gap between the annular member 250 itself and the outer circumferential surface of the side lip 124.

A sealing structure with a torsional damper and an oil seal includes a damper pulley and an oil seal. The damper pulley includes, in a disk part of a hub on a front cover side, an annular projection that protrudes between the window and the boss part. The oil seal includes a side lip and a flange. The side lip extends to the inside of an annular groove of the damper pulley. The flange is opposed to the projection of the damper pulley to cover the projection so that a gap is formed between the flange and the projection.

Solar tracker systems include a torque tube, a column supporting the torque tube, a solar panel connected to the torque tube, and a damper assembly. The damper assembly includes a first end pivotably connected to the torque tube and a second end pivotably connected to the column. The damper assembly further includes an outer shell, a piston within and moveable relative to the outer shell, a first chamber wall and a second chamber wall within the outer shell at least partially defining a chamber, and a valve within the chamber. The valve includes a first axial end defining a slot and is biased to a first position within the chamber in which the first axial end is spaced from the first chamber wall. The valve is moveable within the chamber from the first position to a second position to passively change a flow resistance of the damper assembly.

A sealing ring includes: a lip ring, with at least one sealing lip; and a supporting ring. The lip ring and the supporting ring are connected to one another. The lip ring and the supporting ring each are formed from an elastomeric material. A modulus of elasticity of the lip ring is smaller than a modulus of elasticity of the supporting ring.

A sealing structure with a torsional damper and an oil seal includes a damper pulley serving as a torsional damper and an oil seal. The damper pulley has an annular hub pocket that is recessed in the outer side direction and extends in the circumferential direction along a boss part of a hub. The oil seal includes a side lip that extends toward the outer side. An outer circumferential surface of the hub pocket increases in a diameter toward the outer side, the side lip of the oil seal does not enter inside the hub pocket, and an annular gap is formed between an outer side end of the side lip and an inner side end of the outer circumferential surface of the hub pocket.

One embodiment describes a bearing damper including a housing; a damper with an annular gap and an internal spring, in which the annular gap is formed between an inner rim and an outer rim of the damper, the internal spring circumferentially bounds the annular gap, the outer rim is coupled to the housing, and the annular gap is configured to be filled with fluid used to dampen vibrations produced on a drive shaft; and an external spring coupled to the housing and to the inner rim, in which the external includes an axial stiffness engineered to externally offset axial forces exerted on the inner rim of the and a radial stiffness engineered to externally offset a first portion of radial forces exerted on the inner rim and to permit a second portion of the radial forces to propagate the vibrations from the drive shaft to the inner rim.