A seal ring is provided for sealing a rotating shaft. The seal ring has an outer wall and an inner wall. The outer wall includes one or more external ribs, and the external ribs are disposed along a circumferential direction of the outer wall. The inner wall includes one or more seal contact parts extending inwards from the inner wall, and the seal contact parts are disposed along a circumferential direction of the inner wall. The seal ring is made of an elastic material.

Sealing element for producing an electrically conductive connection between a first machine element and a second machine element, including at least one sealing disc and a support ring, the support ring comprising an axial flange and a radial flange, the sealing disc being formed from an electrically conductive non-woven fabric, and the sealing disc being secured at least in sections along the axial flange by means of a clamping connection between the support ring and the second machine element.

There is provided a cryocooler including a displacer, a displacer drive mechanism, a connecting rod that connects the displacer drive mechanism to the displacer, and a sealing component that supports the connecting rod to allow axial reciprocation thereof. The sealing component includes a bush through which the connecting rod is inserted and defining a radial clearance functioning as a non-contact seal between the connecting rod and the bush, a first contact seal held by the bush on a first side thereof toward the displacer drive mechanism with respect to the radial clearance, and sealing the radial clearance, and a second contact seal held by the bush on a second side thereof toward the displacer with respect to the radial clearance, and sealing the radial clearance.

A sealing unit for a drive shaft driving a working fluid; the sealing unit comprising a sleeve attached to the drive shaft and a gland attached to the housing, a static seal ring attached to the gland and in close proximity to the sleeve, and a stuffing box about the static seal ring, fibrous packing seal blocking the distal and proximal ends of the stuffing box and a first sealant comprising a viscous, non-Newtonian fluid that is injected into the stuffing box under a first pressure exceeding the pressure of the working fluid; the sealing unit further comprising an inner fluid seal of a Newtonian fluid between the first sealant and the drive shaft upstream of the first sealant, such that the Newtonian fluid seal is kept at a pressure slightly higher than the pressure of the working fluid and prevents the working fluid from reaching the first sealant.

In order to provide a piston device that is of simple construction and provides optimised sealing, it is proposed that the piston device should include the following: a housing that includes a piston receptacle; a piston that is arranged to be linearly displaceable in the piston receptacle; a main gasket element that separates a first medium space from a second medium space, and a supplementary gasket element, different from the main gasket element, for sealing in a region between the piston and the piston receptacle.

A vehicle heater combustion chamber assembly includes a housing area (14) with an ignition element mount (36) supporting an ignition element (34) and another housing area (16) defining a fluid flow space (26) with an access opening (32). The ignition element or/and an electric ignition element line (76) is moveable through the access opening. An elastically deformable closing element (40) closes the access opening and includes a meshing area (48), interacting with a housing area wall (42) surrounding the ignition element access opening and including an inner meshing area supported relative to an inner surface of the wall, which faces the fluid flow space. The closing element includes a closing element bottom (44) with an outer bottom surface (94) oriented outwardly, in the direction away from the fluid flow space. The outer bottom surface is offset in a direction of a closing element longitudinal axis towards the fluid flow space.

A vehicle heater combustion chamber assembly includes a housing area (14) with an ignition element mount (36) supporting an ignition element (34) and another housing area (16) defining a fluid flow space (26) with an access opening (32). The ignition element or/and an electric ignition element line (76) is moveable through the access opening. An elastically deformable closing element (40) closes the access opening and includes a meshing area (48), interacting with a housing area wall (42) surrounding the ignition element access opening and including an inner meshing area supported relative to an inner surface of the wall, which faces the fluid flow space. The closing element includes a closing element bottom (44) with an outer bottom surface (94) oriented outwardly, in the direction away from the fluid flow space. The outer bottom surface is offset in a direction of a closing element longitudinal axis towards the fluid flow space.

A valve stem sealing assembly may have an elastomeric seal with an upper sealing lip, a middle sealing lip, and a lower sealing lip on an inner surface. The seal may have an outer surface with a spring groove, an upper retainer flange, and a retainer groove. The assembly may also have a retainer with a radially extending leg and an axially extending leg, where the retainer is mechanically locked to the seal.

A two-sided gasket is constituted of gasket bodies respectively provided on both surfaces of a base member in a thickness direction. The gasket has a structure in which one gasket body contributes to ensuring a seal surface pressure in an opposite gasket body, such that a configuration of the opposite gasket body and a method for forming the opposite gasket body are simplified. The gasket includes a base member, one gasket body that is provided on one side surface of the base member in the thickness direction, and an opposite gasket body that is provided on an opposite side surface of the base member in the thickness direction. The one gasket body includes a projection protruding toward the opposite side in the thickness direction. The base member includes a deformed portion protruding toward the opposite side in the thickness direction by covering the projection. The opposite gasket body is formed as a film-shaped rubber layer deposited on a front surface of the deformed portion.

A two-sided gasket is constituted of gasket bodies respectively provided on both surfaces of a base member in a thickness direction. The gasket has a structure in which one gasket body contributes to ensuring a seal surface pressure in an opposite gasket body, such that a configuration of the opposite gasket body and a method for forming the opposite gasket body are simplified. The gasket includes a base member, one gasket body that is provided on one side surface of the base member in the thickness direction, and an opposite gasket body that is provided on an opposite side surface of the base member in the thickness direction. The one gasket body includes a projection protruding toward the opposite side in the thickness direction. The base member includes a deformed portion protruding toward the opposite side in the thickness direction by covering the projection. The opposite gasket body is formed as a film-shaped rubber layer deposited on a front surface of the deformed portion.