After sausages are purchased, they may be refrigerated for 1 to 2 days - the "sell-by" date on the package may expire during that storage period, but the sausages will remain safe to use after the sell by date if they has been properly stored.
How long is packaged sausage good for in the fridge?
An unopened package will be fresh in your fridge for up to two weeks, though you should use an opened package within a week, according to guidelines from the USDA FSIS.Feb 13, 2018