Engineering plastics, which offer multiple high performance properties for heavy duty components are explained by molecular structure of high polymers.
Technological behavior, which is unique to polymers, including friction, wear, fatigue resistance, contact pressure reduction, temperature and time dependency elucidate their functions as machine parts.
Design criteria and fabrication characteristics of plastic parts are illustrated and exemplified as wear pads, seal rings, bearing bushings, sheaves, tubing, hydraulic hoses and functional coatings presently used in construction industries.