A system includes a pressure ring positioned to abut a fluid end face, the pressure ring having a pressure ring bore with a diameter larger than a fluid end bore diameter. The system also includes an adjacent ring coupled to a fluid end, the pressure ring positioned between the adjacent ring and the fluid end face. The system further includes a face seal positioned at an interface of the pressure ring and the fluid end face, the face seal containing pressurized fluid associated with the fluid end. The system also includes packing material positioned within at least a portion of the pressure ring bore.

A seal assembly can include an annular seal having a first end portion and a second end portion. The second end portion can include a first annular face, a first tapered portion, and a radially-inner surface configured to seal an outer surface of a plunger. The seal assembly can include a backup ring having a first end portion having with a second annular face and a second tapered portion, and a second end portion. The seal assembly can include an annular hoop ring positioned between the annular seal and the annular backup ring, the annular hoop ring having a first tapered surface configured to engage the annular seal, and a second tapered surface configured to engage the annular backup ring. An angle between the second tapered surface and the longitudinal axis of the annular hoop ring can be between 50 degrees and 80 degrees.

A fugitive emissions packing set is provided. The packing set a top ring and a bottom ring made from a fluoropolymer that includes a filler that enhances the mechanical and/or dimensional stability of the ring, as compared to unfilled fluoropolymer. The intermediate rings are formed from an essentially pure fluoropolymer. The top, bottom, or intermediate rings may include a metal insert in any combination.

An annular seal comprising a first energized jacket defining a first axial end of the annular seal; a plurality of seal rings defining a second axial end of the annular seal; a second energized jacket disposed between the first energized jacket and the plurality of seal rings; and a spacer disposed between the first and second energized jackets.

A seal assembly includes a seal body, a spring disposed adjacent to the seal body, and a seal ring disposed adjacent to the seal body. The seal body and the seal ring can include a plastic polymer material. The seal assembly can be a subcomponent of hydraulic strut in the landing gear of an aircraft.

A seal assembly includes a seal body, a spring disposed adjacent to the seal body, and a seal ring disposed adjacent to the seal body. The seal body and the seal ring can include a plastic polymer material. The seal assembly can be a subcomponent of hydraulic strut in the landing gear of an aircraft.

A packing assembly providing a seal point configurable at multiple locations. The packing assembly includes a soft bed having at least one energizing ring and at least one seal ring. The assembly includes a spacer ring sealable with the at least one energizing ring. The assembly further includes at 1=least one adapter ring abutting either end of the soft bed to provide two seal locations relative to the spacer ring.

A seal ring capable of stably reducing a rotational torque while preventing the leakage of sealed fluid. The seal ring includes: an abutment joint part (110) provided at one portion in a circumferential direction thereof; a plurality of dynamic pressure generation grooves (120) provided at intervals in the circumferential direction on a side of a sliding surface thereof sliding on a lateral wall surface of an annular groove; and foreign matter discharging grooves (130) that are provided between a region in which the plurality of dynamic pressure generation grooves (120) is arranged and the abutment joint part (110) in the circumferential direction on the side of the sliding surface sliding on the lateral wall surface, and that are capable of catching foreign matter intruding from the abutment joint part (110) and discharging the caught foreign matter to an outside of a sliding part between the seal ring and the lateral wall surface.

The invention relates to a driving-in device comprising a driving-in piston which is guided in a cylinder for driving a nail element into a workpiece and comprising a combustion chamber which is arranged on the driving-in piston and which can be filled with an ignitable combustion gas mixture. An overpressure of the combustion gas mixture can be generated in the combustion chamber by a charging element, and the driving-in piston is sealed against an inner wall of the cylinder by a first seal during the driving-in movement. The driving-in piston is sealed from the combustion chamber by a second seal, which is loaded axially to a piston axis (A), in a starting position.

A seal assembly can include an annular seal having a first end portion and a second end portion. The second end portion can include a first annular face, a first tapered portion, and a radially-inner surface configured to seal an outer surface of a plunger. The seal assembly can include a backup ring having a first end portion having with a second annular face and a second tapered portion, and a second end portion. The seal assembly can include an annular hoop ring positioned between the annular seal and the annular backup ring, the annular hoop ring having a first tapered surface configured to engage the annular seal, and a second tapered surface configured to engage the annular backup ring. An angle between the second tapered surface and the longitudinal axis of the annular hoop ring can be between 50 degrees and 80 degrees.