Blue, PTFE/red silicone septa 100/pk 500/pk Green, PTFE/red silicone septa 100/pk 5182-0718 500/pk 5185-5829 Red, PTFE/red silicone septa 100/pk 5182-0719 Black, PTFE/red silicone septa 100/pk 5185-5838 Blue, PTFE/white silicone septa 100/pk 5182-0720 500/pk 5185-5863 Green, PTFE/white silicone septa 100/pk 500/pk