The research investigates the UHMWPE bearing surface wear behaviors as the loading and sliding contact response against 316L Stainless Steel and Alumina ceramics counterfaces under a dry environment. Wear was quantifiedby weighing the rest of the UHMWPE specimens. Tribometer is the primary tool in this research activity. The Tribometer's testing method is similar to a pin on a disk (pin-on-disk method). The type of counterface materials influences the friction and wear volume released from the UHMWPE's bearing surfaces. Due to their work in dry environmental conditions, the differences in wear rate would be very significant. In this research work, where a constant contact loadingwas applied, wear volume escalated with increasing the UHMWPE counterfaces' sliding distance. The friction coefficients relied upon loading, sliding speed, and pairing materials. Wear volumes released from the UHMWPE bearing surface that contact the three different counterface materials were compared. The counterface of UHMWPE against Alumina ceramics wears rate of 12.7 g/s is lower than the pairing of UHMWPE with 316L Stainless Steel of around 14.0 g/s. [ABSTRACT FROM AUTHOR]