Polyester resists swelling in wet environments.

An aluminum coating on one side of this film reflects heat, so it’s widely used as an insulator and in packaging applications.

These black polyester rods protect from UV rays better than off-white polyester. Strong and semi-rigid, they won't swell in moist environments, so they're often made into valves, pump components, and spacers.

A satin texture on one side of these PETG sheets makes them semiclear. You can see light from the other side, but not detailed shapes. They are more resistant to scratching and glare than standard PETG.

Polyester absorbs almost no moisture and resists swelling in wet environments. It is also known as PET and PETE.

PETG can be formed into complex shapes without sacrificing durability.