The ornamental design for the pump casing component, as shown and described herein.
FIG. 1 is a perspective view of the pump casing component of the invention;
FIG. 2 is a view in elevation of the pump casing component shown in FIG. 1 rotated vertically to the right;
FIG. 3 is a view in elevation of the pump casing component shown in FIG. 2 rotated vertically 180° ;
FIG. 4 is a top side view of the pump casing component shown in FIG. 1;
FIG. 5 is a side view of the pump casing component shown in FIG. 2, rotated vertically 90° to the right;
FIG. 6 is a side view of the pump casing component shown in FIG. 2, rotated vertically 90° to the left;
FIG. 7 is bottom side view of the pump casing component shown in FIG. 4, rotated vertically 180° ; and,
FIG. 8 is a perspective view of the pump casing component shown in FIG. 1, rotated 180° .
The broken lines in FIGS. 1 and 2 are included for the purpose of illustrating a portion of the pump casing component that forms no part of the claimed design.