Household drain plunger

A plunger comprising:

• a dual function seal having a flat bottom end capable of forming a pressure seal with a surface surrounding a drain opening, the dual function seal also having a bulbous ring shape which is capable of fitting snugly into a first drain opening to form a mechanical seal with the first drain opening;
• a second seal, the bottom of the second seal attached to the top of the dual function seal, wherein the second seal is capable of fitting snugly into a second drain opening, larger in diameter than the first drain opening, to form a mechanical seal with the second drain opening;
• and
• a third seal, the bottom of the third seal attached to the top of the second seal, wherein the third seal is capable of forming a pressure seal with a surface surrounding a drain opening which is at least as large as the second drain opening.

A plunger comprising:

• a handle,
• a head connected to said handle comprising a pleated bellows, and a sealing structure connected to the bottom of said head section, said sealing structure comprising a first seal and a second seal, each seal having a larger diameter than the previous seal from bottom to top for mechanically sealing variously sized drain openings by forming an interference fit with walls defining such drain openings;
• wherein the second seal is slightly larger in diameter than a standard kitchen garbage disposal opening;
• and
• wherein the second seal is sufficiently flexible to deform inwardly when inserted into a standard kitchen garbage disposal opening in order to form an interference fit, thus producing a mechanical seal with a wall defining the garbage disposal opening.