Like nylon, acetal plates are tough enough and strong enough to replace metal. Acetal parts are more dimensionally stable under wet or humid conditions due to lower water absorption. And acetal resists most organic solvents. Available in: Delrin, a homopolymer (trademark of E.I. DuPont) or in an acetal copolymer.
Nylon is a versatile and popular engineering plastic with outstanding hardness and tensile strength plus superior wear resistance. A low coefficient of friction is another advantage along with heat resistance as high as 230°F in some grades.
Unbeatable for the toughest impact and abrasion applications. Stands up to severe pounding, heavy abrasion and gouging. Never breaks in Izod impact testing. Also bears up under high loads and shock without deforming. Superior resistance to oils, gasoline and solvents. Handles temperatures of 225°F. Highly resistant to sunlight and weathering.
Offers you a combination of properties at the top of the scale. For starters, Teflon is nearly inert to chemicals and solvents. It operates safely to 500°F and retains its toughness and flexibility even at very low temperature in the cryogenic range. On top of that, Teflon has the lowest coefficient of friction of any solid and one of the lowest thermal expansion rates. It is self-lubricating, with outstanding weatherability and moisture resistance. A relatively low tensile and compressive strength is about its only limitation. Specify the electrical grade for excellent dielectric properties. Teflon is a tradename of E.I. DuPont de Nemours & Co.
