Upgrade your laboratory efficiency with premium-grade 9mm 9-425 screw caps featuring PTFE/Silicone septa. Designed specifically for standard autosampler applications, these open-top caps ensure reliable sample sealing, high chemical resistance, and smooth needle penetration for HPLC and GC autosampler systems.

Product Specifications

  • Thread/Finish: 9-425 / 9mm Screw Thread

  • Cap Material: Polypropylene (PP)

  • Cap Color: Blue

  • Cap Design: Open Top with 6mm Centre Hole

  • Septa Material: White PTFE / Red Silicone

  • Septa Dimensions: 9 x 1 mm

  • Compatibility: Standard 9mm / 9-425 screw top laboratory vials

  • Application: Laboratory research and autosampler analysis only

Key Features & Highlights

  • Superior Chemical Resistance: Inert white PTFE layer faces the sample to prevent chemical interaction and contamination.

  • Excellent Resealing: Premium red silicone provides high elasticity, ensuring reliable self-resealing after autosampler needle injection.

  • Autosampler Ready: Open-top cap with a 6mm central hole allows precise and effortless needle penetration without septa displacement.

  • Secure Fit: Designed to fit all standard 9-425 screw vials seamlessly.

Available Package Quantities Select your desired pack size from the drop-down menu:

  • 300 Pieces

  • 500 Pieces

  • 1000 Pieces

Important Notice

  • For laboratory and analytical use only.

  • Note: This listing includes caps with septa only. Vials are sold separately unless specified in a bundle.