Use in outdoor applications—this vinyl-coated mesh resists UV light and mildew. It’s often used to sift particles like sand and salt. Polyester has good strength.

These black polyester sheets 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 pump components and spacers. They’re wear resistant and easy to machine. This material is also called PET and PETE.

When exposed to UV rays, these cores won’t become brittle or break down. Use them to add stiffness to composite sandwiches that may be used outdoors without adding a lot of weight. All of these cores are lighter in weight than PVC, balsa wood, and aluminum honeycomb cores, but not as strong. They’re also moisture resistant and recyclable. These cores are often used in composite layups, structural panels, partitions, and industrial tanks. You can even soften them with heat, place them into a mold, and then cool them to create a variety of different shapes. Those with a higher density are stiffer, stronger, and weigh more than those with a lower density.

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. They’re wear resistant and easy to machine. This material is also called PET and PETE.