Xerox Versant 4100 Press Manual page 30

6. Slide the O-ring assembly/assemblies to the desired location on the Separator Assembly
shafts. Examples of recommended O-ring assembly locations when feeding specific stock
are shown below and on the next two pages.
Off-centered O-ring Assembly Location - Avoids Hitting Windows on Windowed Envelopes
4-12 Xerox Customized Envelope Feeder – Problem Solving Guide