What are the 7 different types of plastics?

The 7 Most Common Types of Plastics You See Every Day

Plastic is everywhere—on our streets, in our homes, even in our clothes. But not all plastics are the same. There are seven commonly used types, each designed for different purposes and with unique properties.

Polyethylene Terephthalate (PET or PETE) is what your water and soda bottles are made of. Lightweight and clear, it’s great for single-use containers but should be recycled responsibly.

High-Density Polyethylene (HDPE) is tougher. You’ll find it in milk jugs, detergent bottles, and some plastic bags. It’s more resistant to heat and chemicals, making it a go-to for household cleaners.

Polyvinyl Chloride (PVC) is rigid and durable—perfect for pipes and window frames. It’s also used in cling wrap and some medical tubing, though it’s controversial due to chemical additives.

Low-Density Polyethylene (LDPE) shows up in squeeze bottles, shopping bags, and bread wraps. It’s flexible and tough, though not as commonly recycled.

Polypropylene (PP) handles heat well, which is why it’s used in microwave-safe containers and bottle caps. It’s also common in car parts and textiles.

Polystyrene (PS), known as Styrofoam when foamed, is light and insulating—but problematic. It breaks into tiny pieces easily and is rarely recycled, raising environmental concerns.

Finally, Other plastics like Polycarbonate (PC), Acrylic (PMMA), and ABS fall into a mixed category. PC appears in eyewear and electronics, acrylic in shatter-resistant windows, and ABS in LEGO bricks and dashboard panels.

Knowing these types helps you make smarter choices—whether you're recycling, reusing, or avoiding certain plastics altogether. Each number stamped on a product tells a story. Learning to read it is a small step toward a more conscious lifestyle.