All models double-seam cans under ambient atmospheric conditions. Dixie seamers with vacuum chambers can have vacuum, gas flush, multi-flush and timed delays as possible control functions. A vacuum seamer may be desirable to extract oxygen from the contents of the can to prolong your product’s shelf life. If your can will not withstand vacuum, the controls of the seamer may be set for an inert gas flush. On seamers with the multi-flush option, multiple vacuum then gas flushes may be performed to obtain low oxygen content or to remove atmospheric impurities. Each set value, cycle or delay is performed when the chamber door is closed, before the can and top are joined and double seamed.