A sealing system is between two components, which are translatorily movable relative to each other along a motional axis for sealing off a high-pressure side from a low-pressure side. The sealing system includes pressure relief elements. The use of such a sealing system produces an intermediate-space pressure cascade.

A cutter device of jar includes a shell defining a top, a bottom and an accommodation chamber, a drive shaft inserted through the top and bottom of the shell, one or multiple blades mounted onto the drive shaft and located on the top of the shell, a first oil seal mounted into the accommodation chamber of the shell near the top of the shell and abutted against the periphery of the drive shaft, one or multiple bearings mounted into the accommodation chamber of shell and connected to the shell and the drive shaft, and a second oil seal mounted into the accommodation chamber of the shell near the bottom of the shell and abutted against the periphery of the drive shaft.

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.

An improved face seal may comprise a seal housing having an annular extrusion, and a primary seal coupled to the seal housing. The primary seal comprises a sealing face and a base opposite the sealing face, wherein the primary seal has an annular structure coaxial with the annular extrusion with the base proximate a first end of the seal housing. The sealing face comprises a disrupted surface.

The present invention provides a shaft-cylinder assembly for high-temperature operation comprising a pair of first and second dynamic sealing members having a helical coiled seal ring structure configured to be in contact with the shaft for providing dynamic sealing function in the cylinder; and a cylindrical cooling jacket configured to circumferentially surround the dynamic sealing members such that a cavity is defined between the dynamic sealing members inside the cooling jacket; wherein the cooling jacket comprises one or more inflow cooling channels and one or more outflow cooling channels configured to communicating with the cavity and circulating a cooling fluid through the cavity for moving heat away from the dynamic sealing members.

A low drag fluid seal. The fluid seal includes a rigid lip separated from the rotor shaft by a gap, the gap being sufficient narrow, radially, to prevent liquid from seeping through the gap at an unacceptable rate, but sufficiently wide, radially, to avoid unacceptably high viscous drag. Fluid that seeps through the gap accumulates in a recovery cavity and is recovered by a scavenge pump.

Provided is a cartridge radial double-end-face split type mechanical seal, including: a shaft sleeve, a gland, a rotary ring, an outer stationary ring, and an inner stationary ring which are all of split type structure, split pieces of the shaft sleeve are spliced and sleeved on a main shaft, a rotary ring groove is disposed at the bottom of the shaft sleeve, split pieces of the rotary ring are spliced and fixed in the rotary ring groove, split pieces of the outer stationary ring are spliced and sealingly connected with the rotary ring, split pieces of the inner stationary ring are also spliced and sealingly connected with the rotary ring, an outer push ring is disposed at the top of the outer stationary ring, an inner push ring is disposed at the top of the inner stationary ring.

A triple sealing seat is provided in a conduit gate valve having at least one shut-off plate which is displaceable between an open and closed position with respect to the conduit. The triple sealing seat forms a substantially annular sealing surface. In order to increase the tightness, the annular sealing surface comprises a radial interior sealing and scraping edge which can be contacted with the shut-off plate during operation. Also provided is a first circumferential groove located radially further outside which is in communication with a first gas channel and to which a sealing gas pressure can be applied. Also provided is a second circumferential groove located radially further outside which is in communication with a second gas channel and to which a sealing gas pressure can be applied. Moreover a single-plate gate valve and a double-plate gate valve comprising the triple sealing seat are disclosed, along with a method for sealing a shut-off plate of a conduit gate valve by using the triple sealing seat.

A seal includes a mating ring that rotates relative to a carbon primary ring at a seal interface. A buffer gas is provided into the seal and passes from the back of the primary ring to the seal interface. The seal can be used as a separation seal or in combination with another seal.

A seal configured for use in a chiller refrigeration system is provided including a first flange and a second flange. The first flange and the second flange are coaxially aligned and in direct contact. The second flange includes at least one groove within which a first sealing mechanism and a second sealing mechanism are positioned. The first sealing mechanism and the second sealing mechanism are separated by a distance such that a chamber configured to receive a pressurized gas is formed between the first and second sealing mechanisms.