Commonly used when specific material characteristics such as strength, durability, chemical resistance, flexibility, lubricity, and the like must be carefully controlled: 

SymbolMaterialExample Grades
PEEK Polyetheretherketone Victrex, RTP, Invibio (Optima/Classix)
PEI Polyetherimide Ultem, RTP
PC Polycarbonate Makrolon, Calibre, Cycoloy, Lexan, Lubriloy, Hylex
ABS Acrylonitrile Butadiene Styrene Lustran, Terluran, Polylac
POM (Acetal) Polyoxymethylene Celcon, Delrin
PSU Polysulfone Lubricomp, Udel, RTP, Ultrason
PPS Polyphenylene Sulfide Celstran, Fortron, Hyvex
PESU Polyether Sulfone Ultrason, Thermocomp
TPU Thermoplastic Polyurethane Desmopan, Elastollan
TPE Thermoplastic Elastomer Versalloy, Dynaflex
PBT Polybutylene Terephthalate Valox, Celanex, Crastin
PMMA (Acrylic) Polymethylmethacrylate Acrylite, RTP
SMMA (Acrylic) Styrenemethylmethacrylate Zylar, NAS
PEBA Polyether Block Amide Grilflex, Pebax
PA (Nylon) Polyamide Zytel, Grivory, Torlon, Thermotuf, Thermocomp, Hylon
HSG High Specific Gravity Nylons Thermocomp
LCP Liquid Crystal Polymer Vectra, RTP, Zenite
SBC Styrene Block Copolymer K-resin, Styrolux
SAN Styrene Acrylonitrile Luran
PFA Perfluoroalkoxyethylene Teflon PFA, Hyflon
FEP Fluorinated Ethylene Propylene Teflon FEP