9mm Screw Caps with Pre-Slit White Silicone/Blue PTFE Septa, 100-Pack

These premium 9mm screw caps are engineered for reliable sealing in autosampler vial applications, featuring a high-quality white silicone/blue PTFE septum with pre-slit design for convenient needle penetration. The blue polypropylene closure provides excellent chemical resistance and secure threading, making these caps ideal for GC, HPLC, and LC-MS analysis where sample integrity and reproducible injections are critical.

• Septum Material: White silicone/blue PTFE composite for broad chemical compatibility and low extractables
• Pre-Slit Design: Facilitates smooth needle entry while minimizing coring and resealing issues
• Cap Material: Blue polypropylene construction offers durability and resistance to common laboratory solvents
• Thread Size: 9mm screw thread compatible with standard 9-425 autosampler vials
• Quantity: 100 caps per package for efficient laboratory inventory management
• SKU: 6PSC9STS1