The aim of this research was to investigate and analyze the wear of polymers by use of an empirical wear equation. A dimensional analysis was carried out to develop an equation in which the volume of polymer material worn during sliding on a horizontal pin-on-disk machine was expressed in terms of the operating conditions, properties of the polymer, and counterface roughness. Both a linear and a non-linear relationship of volume loss with other variables was considered in evaluating a dimensionless wear coefficient. It was concluded that a better correlation with the variables was obtained using a non-linear relationship.