A water resistance apparatus used for an oil cylinder, the oil cylinder including a press cover (10) and a piston rod (20) passing within press cover (10), and the water resistance apparatus including: a fluid inlet (14), which is arranged on the press cover (10); a fluid outlet (16), which is arranged on the press cover (10), the fluid outlet (16) and the fluid inlet (14) being in a staggered arrangement; a seal assembly (30), the seal assembly (30) being arranged between the press cover (10) and the piston rod (20); a fluid input assembly (40), the fluid input assembly (40) being connected with the fluid inlet (14); a fluid output assembly (70), the fluid output assembly (70) being connected with the fluid outlet (16). The fluid input assembly of the water resistance apparatus is able to perform cleaning on a pressure accommodating cavity as well as a hydraulic circuit and a valve connected with the pressure accommodating cavity, preventing the problem in current technology where an overflow element is unable to normally open or close due to a foreign substance within the pressure accommodating cavity clogging the overflow element of the fluid output assembly, and thus ensuring that sealed oil pressure is always established in the pressure accommodating cavity, allowing the seal assembly to normally operate, and consequently ensuring that a pumping operation can be carried out normally. Additionally, a pumping system which has the water resistance apparatus, a pumping machine, and a method of cleaning a pumping machine using the water resistance apparatus are disclosed.

One or more techniques and/or systems are disclosed for mitigating fluid loss or leakage from a fluid pump with a rotating shaft driving a pumping mechanism. A seal gland component can have two or more internal seals formed by two or more seal components, such as O-rings, that create one or more chambers that act as a lubricant/barrier fluid reservoir to provide for reduced friction and mitigate release of gaseous emissions. Further, the seal gland component can be a retrofit on an existing shaft to provide for greater life and efficiency as compared to the existing packing gland or other sealing components. Further, the one or more internal seals can be arranged within the seal gland in an asymmetrical manner such that the seal gland can be removed from a shaft, rotated, and reinstalled with the internal seals contacting a different position on the surface of the shaft.

Systems and methods include providing an annular seal stack for an assembly. The seal stack assembly includes, at least one second annular seal, a spacer disposed axially adjacent to the at least one second annular seal, and a third annular seal disposed axially adjacent to the spacer. The seal stack assembly is disposed between a probe and a housing of the assembly and configured to provide an annular seal between the probe and the housing during operation of the assembly at cryogenic temperatures, during exposure of at least a portion of the seal stack assembly to cryogenic temperatures, during a change in pressure, during a change in temperature, or a combination thereof.

A cartridge seal assembly includes an outer housing including a first tubular segment having a first axial end and a second axial end, and a first flange extending radially inward from the second axial end; an inner housing including a second tubular segment having a third axial end and a fourth axial end, and a second flange extending radially inward from the fourth axial end; and a first seal ring having a first tapered inner circumferential surface that defines a first passage through the first seal ring. The inner housing is removably secured to the outer housing, and the first seal ring engages a portion of one of the inner housing and the outer housing.

The invention relates to a hydraulic tool mount having a bore into which a sealing piston is inserted, wherein the sealing piston comprises a pin, a seal and a head which are arranged one behind the other in an axial direction (A) and thus form a stack, wherein the seal comprises a circumferential sealing lip for abutment and sealing against an inner wall of the bore in order to achieve a first sealing effect, and the bore comprises a sealing seat which, when the sealing piston is inserted, forms a stop for the head in axial direction (A), so that, in an end position of the sealing piston, the head abuts the sealing seat and thereby closes the bore in order to achieve a second sealing effect. The invention further relates to a corresponding sealing piston.

An aerosol-generating system includes a main body, a cartridge, and a connecting component. The main body includes a main body housing enclosing a power supply. The cartridge includes a cartridge housing enclosing a reservoir of liquid aerosol-forming substrate. The cartridge is releasably connectable to the main body by the connecting component. The connecting component is fixed to the main body housing and is less stiff in at least one direction than the main body housing. The connecting component that is less stiff the main body housing and the cartridge housing can act as a shock absorber when the aerosol-generating system experiences a significant impact, such as when dropped on a surface. This reduces damage to other components of the system and, in particular, may prevent leaks of liquid resulting from damage to the liquid reservoir.

A sealing device includes a plurality of non-contact seals provided along a sealed shaft; a contact seal provided on at least one of two sides of the plurality of non-contact seals; an injection part that supplies purge gas into a first space of spaces arranged in an axial direction of the sealed shaft, the spaces being between the plurality of non-contact seals and the contact seal; and a collector that collects the purge gas from a second space of the spaces between the plurality of non-contact seals and the contact seal, the second space being positioned to be next to the first space in the axial direction.

A sealing device for a gas-liquid two-phase fluid medium under variable working conditions includes a rotating shaft and a housing, and a chamber formed by the housing is configured to accommodate the gas-liquid two-phase fluid medium. The sealing device further includes a labyrinth sealing mechanism and a fluid dynamic-pressure mechanical sealing mechanism with double end faces, where the labyrinth sealing mechanism and the fluid dynamic-pressure mechanical sealing mechanism with double end faces conduct mutual synergetic effect. Sealing buffer chambers are arranged between the labyrinth sealing mechanism and the fluid dynamic-pressure mechanical sealing mechanism; the fluid dynamic-pressure mechanical sealing mechanism is provided with stationary rings and movable rings, where the stationary rings and the movable rings oppositely abut against with each other.

An arrangement includes a first component having a first groove and a second groove. The arrangement further includes a second component and a fluid transfer ring fixed to the second component. The fluid transfer ring engages with a first wall and a second wall in the first groove such that the fluid transfer ring and the first groove form a first cavity. The first component and the second component are rotatable relative to each other. The fluid transfer ring further engages with a third wall in the second groove such that the fluid transfer ring and the second groove form a second cavity.

A labyrinth seal including a stator and a non-contacting rotor, and annular elastomeric seals. The confronting surfaces of the stator and rotor define at least one interface passage, including a radially-outermost annular interface passage between an annular, outermost, radially-extending projection of the stator and an annular rearwardly-extending distal projection of the rotor that overlaps the radially-extending projection of the stator, the radially-outermost annular interface passage tapering outwardly and rearwardly at an acute angle relative to an axial reference line. The annular elastomeric seals are stationary with the stator during dynamic operation of the rotor, and are not contacted by a surface of the rotor during dynamic operation. The interface can also have two radially-disposed exclusion chambers, the outer exclusion chamber being defined in part by a radially-inboard projection of the rotor. The stator can have a projection providing a contact avoidance interface position inboard of at least two contaminant-excluding interfaces.