Delrin® Homopolymer Delrin® homopolymer also known as POM is a crystalline plastic. It offers an excellent balance of properties between metals and plastics. Different chemical companies with slightly different mixes produce this material using names such as Delrin® and Celcon®. Characteristics of Delrin® are its high tensile strength, hardness, and rigidity to −40 °C. It has high fatigue and creep resistance as well as high toughness and stiffness. Delrin® has excellent dimensional stability and low friction. Because

Ultem® PEI is a semi-transparent high-temperature plastic. It is used to make custom parts as well as fasteners such as screws, hex nuts, washers, threaded studs, and spacers. It can be both molded and machined. Ultem® PEI fasteners and custom hardware are also available in glass filled grades for greater strength and stiffness. (Glass-filled grades are opaque.) Ultem® 1000 is the natural grade, and Ultem® 2300 is the glass filled grade. Ultem®

Nylon plastic is a polyamide. So it is made up of two monomers. Each monomer contains 6 carbon atoms of hexamethylenediamine and six of adipic acid. FIVE REASONS NOT TO USE NYLON HYGROSCOPIC Nylon plastic is hygroscopic. That means it absorbs water even from the natural environment. And water absorbsion can cause changes in a part’s dimensions. NOT UV RESISTANT It is not UV resistant without additives. NYLON PLASTIC IS NOT CHEMICALLY RESISTANT And

Chemical resistant plastics are often called for in many engineering applications such as custom parts and fasteners. These include screws, bolts and hex nuts.  Not all plastics will hold up well in extreme environments.  You should always do testing to ensure that you make the right material for your specific application. But there are certain plastics that tend to hold up well in chemically harsh environments. When considering a chemical resistant