Fluid end

A fluid end section, comprising:

• a housing having a longitudinal axis and opposed front and rear surfaces joined by an outer intermediate surface, the housing comprising a flanged section positioned adjacent the rear surface;
• a horizontal bore formed within the housing and interconnecting the front and rear surfaces, the horizontal bore extending along the longitudinal axis of the housing and configured to receive a fluid routing plug;
• a stuffing box attached to the rear surface of the housing using a plurality of fasteners;
• a retainer attached to the stuffing box using the plurality of fasteners;
• in which the plurality of fasteners extend through the flanged section of the housing, the stuffing box, and the retainer such that a first end of each of the plurality of fasteners projects from the flanged section and an opposed second end of each of the plurality of fasteners projects from the retainer.

A fluid end section, comprising:

• a housing having a longitudinal axis and opposed front and rear surfaces joined by an outer intermediate surface, the housing comprising a front flanged section and a rear flanged section;
• a horizontal bore formed within the housing and interconnecting the front and rear surfaces, the horizontal bore extending along the longitudinal axis of the housing;
• a first plurality of fasteners extending through the front flanged section;
• and
• a second plurality of fasteners extending through the rear flanged section;
• in which an end of each of the first plurality of fasteners faces an end of each of the second plurality of fasteners.