Blog about plastics, materials, processing and engineering tools

The universal recycling symbol is the most popular in the world and is internationally recognizable. The symbol came from Möbius strip and exists in a lot of varieties. This symbol is in the public domain and it is not a trademark.

Nowadays, other recycling symbols are very popular and they tell from which material the product is made.

Moreover, the recycling symbols help in reprocessing and recycling. Those symbols are used to mark: paper, plastics, glass, metals, and batteries.

Below there are presented some examples of recycling identification codes for plastic materials:




#1 PET(E)

Polyethylene terephthalate

Polyester fibers, soft drink bottles


High-density polyethylene

Plastic bottles, plastic bags, trash cans, imitation wood

#3 PVC

Polyvinyl chloride

Window frames, bottles for chemicals, flooring, plumbing pipes


Low-density polyethylene

Plastic bags, buckets, soap dispenser bottles, plastic tubes

#5 PP


Bumpers, car interior trim, industrial fibers, carry-out beverage cups

#6 PS


Toys, flower pots, video cassettes, ashtrays, trunks, beverage/food coolers, beer cups, carry-out food containers, Styrofoam

#7 O (OTHER)

All other plastics

Polycarbonate (PC), polyamide (PLA), styrene acrylonitrile (SAN), acrylic plastics/polyacrylonitrile (PAN), bioplastics

#9 or #ABS

Acrylonitrile butadiene styrene

Monitor/TV cases, coffee makers, cell phones, most computer plastic


1. Wikipedia