Polyamide better known as nylon is a tough, high strength, and high heat plastic material that also has excellent surface lubricity. The term polyamide refers to the basic building blocks of this material however manufacturers have created a large number of varieties of nylons over the years. These different grades are designated by numbers and letters. Nylon 6 and nylon 6/6 are the most commonly used but there are other grades on the market such as: PA46, PA610, PA612, PA10, PA12, PA6-6/6 alloy, PA6/6T, PA6I/6T, PA66/6T as well as semi-aromatic grades such as polyphthalamide (ppa).

Nylon 6/6 has higher tensile strength and heat resistance than nylon 6. Nylon 6 has higher impact strength and better appearance than Nylon 6/6. Both nylon 6 and 6/6 are available with a wide variety of fillers and reinforcements such as minerals, glass fiber and carbon fiber as well as combinations of these.

The typical brands of Nylon plastic resin offered by Midwest Resins are: