Induction Seal Material Option: These are designed as a one piece liner to provide clean peel heat seal (HS) to Polyethylene (PE), Polypropylene (PP), Polyethylene terephthalate (PET) or Polyvinylchloride (PVC) containers with an induction heat sealing device. TS-PPE/2 is composed of a backing of Polyolefin (PO) foam/Polyester film inseparably bonded to HS 135 (PE and PP). TS-PET/2 is composed of an innerseal of HS165 inseparably bonded to a backing of a Polyester / foamed Polyolefin (PO) laminate (PET and PVC).