Agilent, 8010-0251, Inlet septa, 9.5 mm, gray, general purpose, 50/pk

The Agilent gray general-purpose inlet septa provide replaceable sealing elements for compatible gas chromatograph injection ports. Each septum has a nominal 9.5 mm diameter, and the package contains 50 pieces for routine inlet maintenance. The elastomeric seal accommodates repeated syringe-needle penetration during sample injection while restricting unwanted gas leakage around the needle entry point. Periodic septum replacement supports stable carrier-gas flow and helps control contamination introduced by damaged or cored septa. The 9.5 mm format is a critical selection parameter because septa with different diameters are not interchangeable across inlet designs. These are GC inlet sealing consumables, not injector liners or column ferrules.