Blue PTFE - White Silicone Septa

We are offering blue ptfe - white silicone septa. our septa use only the highest quality materials to ensure proper function and can be pre-slit to ease needle penetration 0.035" white silicone with 0.005" red ptfe high quality silicone compounds are used to ensure proper re-sealing and reduced chances of coring designed for single injection and/or short sample cycles, particularly for lc applications absence of elastomer layer reduces potential for contamination