Center pull tab plug with sealing flange

Abstract

A center pull tab sealing plug for sealing a hole in a structural member is provided, comprising a base element having top and bottom portions; a flexible flange extending from a periphery of the base element, the flange including at least one annular ridge or O-ring extending downwardly from a bottom surface of the flange and spaced from a side wall of the base element; and a pull tab extending upwardly from the top portion of the base element a distance sufficient to provide a gripping surface.

1 . A center pull tab sealing plug for sealing a hole in a structural member, comprising: 
 a base element having top and bottom portions;    a flexible flange extending from a periphery of said base element, said flange including at least one annular ridge or O-ring extending downwardly from a bottom surface of said flange and spaced from a side wall of said base element; and    a pull tab extending upwardly from said top portion of said base element a distance sufficient to provide a gripping surface.    
     
     
         2 . The sealing plug of  claim 1 , comprising multiple annular ridges or O-rings disposed along the bottom surface of said flange.  
     
     
         3 . The sealing plug of  claim 1 , wherein said at least one ridge or O-ring is triangular in cross-section.  
     
     
         4 . The sealing plug of  claim 3 , wherein said at least one ridge or O-ring is semi-circular in cross-section.  
     
     
         5 . The sealing plug of  claim 1 , comprising a cavity extending through a portion of said base element from the upper portion of said sealing plug to an interior bottom portion.  
     
     
         6 . The sealing plug of  claim 5 , wherein said pull tab extends upwardly from the said base element from a bottom portion of said plug within said cavity.  
     
     
         7 . The sealing plug of  claim 1 , wherein the body of said base element is solid.  
     
     
         8 . The sealing plug of  claim 1 , wherein the body of said base element includes a cavity extending from a top portion to an interior bottom portion.  
     
     
         9 . The sealing plug of  claim 1 , wherein said flange extends in an oblique angular relationship to said side wall of said base element  
     
     
         10 . The sealing plug of  claim 9 , comprising multiple annular ridges or O-rings disposed along the bottom surface of said flange.  
     
     
         11 . The sealing plug of  claim 9 , wherein said at least one ridge or O-ring is triangular in cross-section.  
     
     
         12 . The sealing plug of  claim 11 , wherein said at least one ridge or O-ring is semi-circular in cross-section.  
     
     
         13 . The sealing plug of  claim 9 , comprising a cavity extending through a portion of said base element from said upper portion of said base element to an interior bottom portion.  
     
     
         14 . The sealing plug of  claim 13 , wherein said pull tab extends upwardly from the top portion of said base element from a bottom portion of said base element within said cavity.  
     
     
         15 . The sealing plug of  claim 9 , wherein the body of said base element is solid.  
     
     
         16 . The sealing plug of  claim 9 , wherein the body of said base element includes a cavity extending from a top portion to an interior bottom portion.