Agilent, 5067-5975, Piston, ceramic, for 1290 pump

Agilent ceramic piston is a replacement pumping element for compatible 1290 Infinity long-life pump-head assemblies. The piston reciprocates inside the pump chamber to displace mobile phase while its smooth ceramic surface operates against the high-pressure piston seal. This construction is intended for demanding UHPLC service, where reliable sealing and repeatable piston movement help maintain a stable flow and gradient profile. The component supports selected G4204A, G4220A/B, G7104A/C, and G7120A pump models, subject to the installed pump-head revision. Replacement can be required if inspection identifies piston scoring, breakage, or other mechanical damage that compromises sealing. This item is one ceramic piston, not a complete pump head or a piston-seal kit.