• پلی استال (پلی اکسی متیلن) POM

    پلی استال، گرما نرمی محکم، سخت، به شدت کریستاله و مقاوم به مواد شیمیایی مشتمل بر بازها و اسیدها بوده و در برابر سایش و تنش‌های فیزیکی بسیار پایدار است در بسیاری موارد جایگزین فلزات می‌گردد .


    Polybutylene terephthalate

    Polyoxymethylene (POM), also known as acetal, polyacetal and polyformaldehyde, is an engineering thermoplastic used in precision parts requiring high stiffness, low friction and excellent dimensional stability. As with many other synthetic polymers, it is produced by different chemical firms with slightly different formulas and sold variously by such names as Delrin, Celcon and Hostaform.

    Typical applications for injection-molded POM include high performance engineering components such as small gear wheels, ski bindings, fasteners, knife handles, lock systems, and model rocket launch buttons. The material is widely used in the automotive and consumer electronics industry. The M-16 rifle's stock and other parts are made of it.