Seal assembly for progressive cavity pump

A method of replacing one or more components of a seal in a seal assembly for sealing a power input shaft of a progressive cavity pump, the method comprising:

• decoupling the power input shaft from a prime mover shaft;
• decoupling a removable portion of the seal assembly from a mounted portion of the seal assembly, wherein the mounted portion is mounted to the progressive cavity pump, wherein the removable portion is configured to apply a compression force to the seal within the seal assembly;
• and
• removing one or more components of the seal from the power input shaft through a gap between the power input shaft and the prime mover shaft, wherein the gap between the power input shaft and the prime mover shaft exists when the progressive cavity pump is in a fully assembled condition.

A progressive cavity pump system, comprising:

• a prime mover including a prime mover shaft;
• a progressive cavity pump, including a power input shaft;
• and
• a seal assembly for sealing the power input shaft of a progressive cavity pump, the seal assembly comprising:
• a seal housing arranged around the power input shaft, the seal housing including:
• a mounted portion, mounted to the progressive cavity pump;
• a removable portion, removably coupled to the mounted portion, configured to apply a compression force to a seal within the seal assembly;
• and
• a scaling element, configured to seal an interface between the mounted portion and the removable portion;
• wherein:
• the seal housing is configured so that a portion of the mounted portion is in direct contact with a portion of the removable portion;
• the seal within the seal assembly includes a removable component including a sealing face;
• and
• there is a gap between the prime mover shaft and the power input shaft that has a length in a longitudinal direction that is greater than a width of the removable component including the sealing face.