Resin identification codes label the resin type used in a plastic article. The number is not a universal recycling instruction and does not prove that a local program accepts the item.
Common resin code chart
| Code | Resin abbreviation | Common name |
|---|---|---|
| 1 | PET or PETE | Polyethylene terephthalate |
| 2 | HDPE | High-density polyethylene |
| 3 | PVC or V | Polyvinyl chloride |
| 4 | LDPE | Low-density polyethylene |
| 5 | PP | Polypropylene |
| 6 | PS | Polystyrene |
| 7 | Other | Other or mixed resin categories |
ASTM International’s D7611/D7611M standard defines resin identification coding for plastic manufactured articles and explicitly distinguishes the code from a guarantee of recycling or reclamation. A triangle-shaped mark does not mean the local facility accepts that item.
How to use the mark
- Read the number and resin abbreviation, if both are printed.
- Check the item’s full material and component labels.
- Look up the local recycling program’s accepted items and preparation rules.
- Follow the maker’s care instructions for food containers and other reusable products.
Use this chart as a material identifier. For a food-contact label, see what BPA-free means, and browse travel shopping.
Related guides
- Does BPA-Free Mean Plastic-Free?
- Wood vs Plastic Construction Toys: Material Guide
- Browse On the go.
Sources
Common questions
What does the number inside the recycling triangle mean?
It is a resin identification code that identifies a plastic resin type. It is not a promise that the article will be recycled.
Does code 7 mean one specific plastic?
No. It is a category for other or mixed resin types not represented by codes 1 through 6.
Can I recycle every item marked 1 or 2?
Local collection rules vary by item and location. Check the local program rather than relying on the code alone.