If the pickled pigs feet jar has remained sealed and you never opened the pickled pigs feet jar the pickled pigs feet should last for a month or two even past expiration date.
Once you open the jar of pickled pigs feet you should eat it within a week or two because the pickled pigs feet will last about 2 weeks once opened.
Once you open the pickled pigs feet jar make sure to keep it refrigerated so that it doesn't go bad.
The pickled pigs feet can stay out at room temperature for 2 hours and after that you should refrigerate it.
Bacteria can grow on the pickled pigs feet if left out at room temperature for over 2 hours.
I have kept some pickled pigs feet for 6 months in a jar that was never opened and they were still good but they didn't taste as good.