Plastic Composition Numbers (IMAGE) Norwegian University of Science and Technology Caption Researchers recommend that consumers try to avoid PVC, which is labelled as #3 plastic in the recycling code, and all products labelled as #7 plastic, which are "other types of plastic". Credit Illustration: Teleman84, Wikimedia Commons Usage Restrictions with proper credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.