69 mm X 46 mm clear shrink bands are perfectly sized for 1 oz plastic straight-sided jars and will be able to grant them extra protection and safety through a tamper-evident seal. These shrink bands are made from shrinkable PVC plastic and are 2 mil thick, but are not difficult to remove due to their single vertical perforation. A heat source is needed to apply these shrink bands and our heat gun kit can help speed the process as well as ensure the quality of each seal.