The Hot Mamma Sausages that are in the jar do not need refrigerated.
I buy Hot Mamma Sausages in the jars and never have I refrigerated any of them and sometimes it can take me a few months to finish a jar of Hot Mamma Sausages.
The preservatives in the jar of Hot Mamma Sausages helps to keep them from spoiling and even when not opened the Hot Mamma Sausages will remain safe to eat for many years.
I bought some jars of Hot Mamma Sausages from a friends store that was closing and they were 10 years old and the Hot Mamma Sausages were perfectly fine and tasted just as good as fresher ones.
Once opened the Hot Mamma Sausages go bad sooner but they should last at least 6 months to a year once opened.
If you want too you can refrigerate them but there's no need to refrigerate the Hot Mamma Sausages.