The inlet seal at the base of the Agilent 5890/6890/7890 GC injection port contacts the sample and must be changed frequently to prevent adsorption of active compounds.

• All seals include washers

In addition, septum fragments and sample residue accumulate on the disk surface, requiring disk replacement

Note: The 1.2 mm inlet seal is recommended when installing two columns using a two-hole Vespel®/graphite ferrule.

To reduce breakdown and adsorption of active compounds, use Siltek® or gold-plated seals.