CTC-5J4989A Caterpillar PTFE 2-Piece Hydraulic Piston Seal

CTC-5J4989A is the Hercules PTFE 2-piece hydraulic piston seal reference for selected Caterpillar components. This two-piece PTFE piston seal is used for low-friction sealing between the piston and cylinder bore. The critical dimensions are 6.000 in bore, 5.095 in groove diameter, 0.379 in width. The sealing element uses glass/moly-filled PTFE.