| Plastic ID Code | Type of Plastic Polymer | Properties | Common (Not Limited To) Packaging Applications |
 | PET (Polyethylene terephthalate) | Clarity, strength, toughness. barrier to gas and moisture | Fizzy drink bottles, oven-ready meal trays and water bottles. |
 | HDPE (High-density polyethylene) | Stiffness, strength, toughness, resistance to moisture, permeability to gas. | Milk bottles, detergent bottles, yogurt and margarine tubs and cereal box liners. |
 | PVC (Polyvinyl chloride) | Versatility, ease of blending, strength, toughness. | Cling film (plastic food wrap), vegetable oil bottles, loose-leaf binders and construction products such as plastic pipes |
 | LDPE (Low-density polyethylene) | Ease of processing, strength, toughness, flexibility. ease of sealing, barrier to moisture. | Dry cleaning bags, produce bags, trash can liners, bread bags, frozen food bags and squeezable bottles, such as mustard and honey |
 | PP (Polypropylene) | Strength, toughness, resistance to heat, chemicals, grease and oil, versatile, barrier to moisture | Ketchup bottles, medicine bottles, aerosol caps and drinking straws |
 | PS (Polystyrene) | Versatility, clarity, easily formed | Compact disc jackets, grocery store meat trays, egg cartons, aspirin bottles, foam packaging peanuts and plastic tableware |
 | Other | Dependent on polymers or combination of polymers. | Three- and five-gallon reusable water bottles, certain kinds of food containers and Tupperware |