Agilent Seal Cap for Manual Purge Valve Lot of 2 Seals

The Agilent 5067-4728 is a critical replacement seal cap designed for the manual purge valve on Agilent 1100, 1200, 1260, and 1290 Infinity series HPLC systems. This gold-plated seal is a high-wear item that ensures a leak-tight closure when the purge valve is closed during standard analytical runs.

Core Function & Maintenance

The seal cap acts as the primary interface between the valve body and the purge valve frit. Over time, physical compression and chemical exposure can deform the seal, leading to mobile phase leaks from the purge valve waste line even when the valve is fully tightened.

• Preventative Maintenance: Agilent typically recommends replacing this seal annually or whenever you observe a drop in system pressure that cannot be attributed to the pump heads or degasser.

• Material: The gold plating provides superior chemical inertness and a soft enough surface to create a reliable metal-to-metal seal against the stainless steel valve components.