Plug cap
FIG. 1 is a top perspective view of a plug cap in accordance with the present design; 
     FIG. 2 is a top plan view thereof; 
     FIG. 3 is a bottom plan view thereof; 
     FIG. 4 is a front elevational view (back elevational view is the same) thereof; 
     FIG. 5 is a sectional view taken in the direction of the arrows on line 5--5 of FIG. 2; and, 
     FIG. 6 is a top plan view thereof, in the compressed condition.