Rotating pump shaft barrier seal

A barrier seal device that provides for fluid migration mitigation along a rotating shaft of a rotating shaft pump, comprising:

• a one-piece body comprising a seal portion at a proximal end, a bushing portion at a distal end, and an internal fluid port that fluidly couples an interior of the body with an exterior of the body;
• wherein the bushing portion comprises a substantially uniform outer diameter that is configured to fit inside a stuffing box of the rotating shaft pump such that the outer diameter of the bushing portion is configured to engage a first seal located in a first channel disposed around an inner wall of the stuffing box, an exterior lubrication channel formed along the outer diameter of the bushing portion such that the substantially uniform outer diameter of the bushing portion is interrupted only by the exterior lubrication channel as the bushing portion extends from the distal end to the proximal end, and a substantially uniform inner diameter that allows for dynamic rotation of the shaft, the bushing portion comprising an annular interior channel disposed at the distal end around an interior wall, for operably holding a dynamic gasket against the rotating shaft;
• and
• wherein the seal portion comprises a flange that projects radially outward from a central longitudinal axis of the body, the flange comprising an exterior face and an interior wall, the interior wall adjacent the rotating shaft, and a flange port that fluidly couples the exterior face with interior wall.

A barrier seal that operably fits in a stuffing box with a rotating shaft of a rotating shaft pump to mitigate fluid migration along the shaft, comprising:

• a one-piece body comprising a proximal end and a distal end, and comprising:
• a bushing portion comprising the distal end of the body, the bushing portion comprising:
• a substantially uniform outer diameter that is configured to operably fit inside the stuffing box of the rotating shaft pump such that the outer diameter of the bushing portion is configured to engage a first seal located in a first channel disposed around an inner wall of the stuffing box;
• an exterior lubrication channel formed along the outer diameter of the bushing portion such that the substantially uniform outer diameter of the bushing portion is interrupted only by the exterior lubrication channel as the bushing portion extends from the distal end to the proximal end;
• a substantially uniform inner diameter that is configured to operably fit around the rotating shaft of the rotating shaft pump;
• an internal fluid port that fluidly couples an interior lubrication channel with the exterior lubrication channel of the bushing portion;
• an annular interior channel disposed at the distal end around an interior wall, the interior channel configured to hold a dynamic gasket against the rotating shaft;
• and
• a seal portion comprising the proximal end of the body, the seal portion comprising:
• a flange that projects radially outward from a central longitudinal axis of the body, the flange comprising an exterior and interior wall, the interior wall adjacent the rotating shaft;
• a flange port that fluidly couples the exterior with the interior wall, the flange port comprising an inlet port and an outlet port, respectively fluidly coupled with the interior lubrication channel, wherein the exterior lubrication channel is fluidly coupled with the internal fluid port;
• and
• an annular interior channel disposed at the proximal end, proximally from the flange, around an interior wall of the flange, the interior channel configured to hold a dynamic gasket against the rotating shaft.