Our 48" x 450' 4 Mil poly tubing is the key to packaging heavy weight, odd-size items or long cylinder objects. Just slip the length or tubing over the item you're packaging and seal both ends with a bag sealer to give your product a custom fit every time. All clear 48" x 450' 4mil polytubing is made from low density polyethylene and can be recycled. These medium weight 48 inch by 450 feet plastic tubing can be sealed by heat sealing, and they meet FDA requirements for use in food packaging and storage applications.