Intrinsic low friction polyoxymethylene

A polyoxymethylene polymer composition, the polyoxymethylene polymer composition comprising;

• a polyoxymethylene copolymer having a melt flow index of less than about 50 g/10 min, and
• first tribological modifier comprising an ultra-high molecular weight silicone having a kinematic viscosity at 40° C. of greater than 100,000 mm2 s−1, the ultra-high molecular weight silicone being present in the polymer composition in an amount from about 0.1 to about 10% by weight;
• a second tribological modifier comprising polytetrafluoroethylene particles, ultra-high molecular weight polyethylene, or a silicone oil having an average molecular weight of at least 5,000 g/mol and less than 75,000 g/mol and having a kinematic viscosity at 40° C. of greater than 100 mm2 s−1 and less than 15,000 mm2 s−1, or mixtures thereof;
• and
• reinforcing fibers present in the composition in an amount of at least 10% by weight and up to 50% by weight.