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11mm roll-on cap (with septum): PTFE/silicone sealed aluminum sample cap

“Material: PTFE/Silicone Septum + Aluminum Cap
Dimensions: 11mm crimp diameter, 5.5mm center hole
Variations: Gold/blue aluminum cap; red-white/white-red septum combination
Model: SC112114 (three-layer), SC11111/SC11212 (two-layer)”

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Reliable inertness – red PTFE contact surface prevents sample adsorption
Precision fit – 5.5mm center hole optimized for syringe needles and autosamplers
Strong seal – crimped aluminum cap withstands pressure fluctuations
Widely used – HPLC, GC and long-term sample storage
Visual monitoring – white silicone layer allows for quick inspection of septum integrity
Ultra-thin septa minimize sample dead volume

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