Recycle by shape, not by number. The number printed on plastic objects is called a resin identification code, and is used to identify the type of plastic an object is made from; a number or a recycling symbol (chasing arrows) do not mean it is recyclable. Increasingly, the shape of a plastic object is the best indicator of recyclability. The most recyclable shapes are bottles, jugs, jars, tubs, and their lids. However, recycling rules can vary so be sure to ask your service provider for guidelines.
Although the number (resin code) does not indicate recyclability, here’s some more information about the resin types and some common objects and products made from that type of plastic.
Number 1 – PETE (Polyethylene terephthalate):
Soda bottles, water bottles, condiment bottles, etc.
Number 2 – HDPE (High-density Polyethylene):
Containers for: colored laundry/dish detergent jugs, clear water/milk jugs, shampoo/conditioner bottles, etc.
Number 3 – V (Polyvinyl chloride):
Pipes, shower curtains, clear medical tubing, vinyl dashboards and seat covers.
Number 4 – LDPE (Low-density Polyethylene):
Wrapping films, grocery bags, and sandwich bags.
Number 5 – PP (Polypropylene):
Tupperware, yogurt tubs, plastic caps of soda bottles, etc.
Number 6 – PS (Polystyrene):
Plastic cups, disposable cutlery and cups (clear and colored), coffee cups, packing peanuts, Styrofoam insulation.
Number 7 – OTHER:
These are made of any combination of 1-6 or other, less commonly used plastics/resins.