Patent ID: 7163585

Claim:
An insert for a deposition shield in a plasma processing system comprising: a plug configured to fit into an opening in said deposition shield, said plug comprises a frontal surface and a perimeter surface; a flange coupled to said plug and configured to couple said insert to at least one of the deposition shield and a chamber wall of the plasma processing system, said flange comprising a first surface, a second surface, and an edge surface, wherein said first surface comprises: a mating surface extending inward from said edge surface, and a recess positioned between said mating surface and said perimeter surface of said plug, said recess having a recess surface recessed from said mating surface; and a protective barrier provided on a plurality of exposed surfaces of said insert, wherein the plurality of exposed surfaces comprise said frontal surface of said plug, said perimeter surface of said plug, and said first surface of said flange excluding said mating surface.