Poly Tubing Item Code: Type: Sold By Quantity Bags Poly Tubing 3 mil 4 mil Description Poly tubing is used for creating protective packaging for items of varying length because the tubing can be cut to the lengths required and sealed on one or both ends. Made from 100% virgin low density polyethylene; acceptable for use with food products; treated to allow for printing. Tubing can be heat sealed, stapled or taped at either one or both ends. All sizes come on 12" diameter rolls with 3" cores.