Patent ID: 8418281

Claim:
A flanged seal for the mounting of an entirely under the countertop mounted sink comprising: a generally oval ring having a top edge, a bottom edge, an inner face and an outer face wherein said inner face is chemically bonded to an inner sidewall of a sink cutout in a countertop so as to form a continuous watertight seal wherein said seal has a planar flange that extends to cover an area that only matingly profiles that of the sink flange, said planar flange having a top face and a bottom face, and said planar flange extends normally from said bottom edge of said ring and said top face is chemically bonded to a planar bottom face of said countertop in the region adjacent said sink cutout; and wherein said flange bottom face is surface planed such that said bottom face is planar to and parallel to a top face of the mounting flange of a sink so as to create more surface contact between said sink and said seal.