Patent ID: 8444926

Claim:
A processing chamber, comprising: a chamber body having sidewalls, a bottom, and a chamber lid coupled to a top portion of the chamber body, defining one or more processing regions therein; and a liner assembly, comprising: a liner body removably disposable within the sidewalls of the processing chamber; a heater embedded in the liner body; a flange extending outward from an outer diameter of the liner body, a portion of an upper surface of the flange forming a sealing surface; a recess formed in the upper surface of the flange; and a plurality of cylindrical contact pads extending from the upper surface of the flange to an elevation above the sealing surface, wherein each of the plurality of cylindrical contact pads contacts a portion of the chamber lid, and the liner body, the flange and the plurality of cylindrical contact pads integrally forming a unitary heated liner wherein the plurality of cylindrical contact pads minimize a contact area between the chamber lid and the liner assembly.