A press system that reduces contamination of workpieces and/or compliant members used in die assemblies of the press from the pressing process. The die assemblies may utilize annular or hole-less stampers in which the compliant member is sealed in the die assembly. The compliant member may have be annular having a cavity at approximately its center. A gap may be generated at the cavity of the compliant member between a constraint member and the stamper. The gap, for example, may be filled with a plug to prevent significant distortion of the stamper over a hole of a disk shaped workpiece due to the pressure induced force generated by the press system. An outer diameter ring surrounding a workpiece may be used to prevent collapse of the stampers outside the diameter of the workpiece to insure uniform pressing out to the outer diameter of the workpiece.