How long after sell by date can vacuum packed franks be used?

Vacuum-packed franks can typically be used up to 1-2 weeks after the sell-by date if stored properly in the refrigerator. However, it's important to check for any unusual odors, discoloration, or signs of spoilage before consuming them. When in doubt, it's best to err on the side of caution and discard them if they appear questionable.