9mm Screw Caps, Grey Polypropylene, White Silicone/Red PTFE, 100-pk

9mm Screw Caps with White Silicone/Red PTFE Septa – 100-Pack

These 9mm grey polypropylene screw caps with white silicone/red PTFE septa provide reliable, leak-proof sealing for autosampler vials in HPLC, GC, and LC-MS applications. The dual-layer septum design combines the flexibility of silicone with the chemical resistance of PTFE, ensuring optimal sample integrity and minimal extractables for accurate analytical results.

• Material: Grey polypropylene cap with white silicone/red PTFE septum
• Cap Size: 9mm diameter – compatible with standard 9mm screw thread autosampler vials
• Septum Properties: PTFE layer provides excellent chemical inertness; silicone backing offers superior resealing capability
• Applications: Ideal for HPLC, GC, LC-MS, and general chromatography sample preparation
• Quantity: 100 caps per pack
• SKU: 6PSC9STBS1