PTFE/ silicone septum for 2ml, 4ml, 10ml HPLC vials. color is red, blue, white ,natural . septa ptfe/silicone septum ... order is OKOEM/ODM is acceptable1.use for hplc,autosampler,chromatography,Agilent,waters machine2.glass vials with 8mm PTFE/silicone septa liner3.avaible ... ,40ml,60ml4.customers' designs can be made upon requests glass autosampler vials with PTFE silicone washer