This product is a composite material featuring layers of steel backing bonded to a porous bronze matrix, which is impregnated and overlaid with PTFE bushing material. The steel backing provides mechanical strength, while the bronze inter-layer, impregnated with PTFE, ensures a robust mechanical bond for the lining. During normal operation, a thin film from the PTFE lining transfers to the rotating shaft, maintaining its effectiveness throughout the bearing’s operational lifespan. Discover and shop online for these sleeve bearings at viiplus.com. We offer a wide selection of bushings, including bimetal bearings and multi-layer options with reliable steel backings.