Polymer housing contains additive that resists bacterial and fungal growth. These Polymer Sleeve Bearings requires no lubrication, as these are self-lubricated polymer sleeve insert for maintenance free operation. The hard backing provides mechanical strength while the sintered layer provides a strong mechanical bond between the backing and the bearing lining. The polymer offers exceptionally low friction even under dry conditions and the thermoplastic based polymer is designed for operating with marginal lubrication. These Polymer Sleeve Bearings promotes dimensional stability and improves thermal conductivity.