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Professional 9-425 Screw Caps and PTFE Silicone Septa, Leak-Proof Seal for HPLC GC Vials

Ensure absolute sample integrity with our professional-grade 9-425 screw caps and septa.
The blue polypropylene cap is precisely engineered to standard dimensions (9mm diameter, 6.2mm height), while the integrated red silicone/white PTFE septum provides broad chemical resistance and outstanding resealing capability for repeated injections.

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Precision Engineered Cap: Manufactured to exact 9-425 specifications (9x6.2mm) for a perfect, universal fit on all compatible autosampler vials, ensuring consistent torque and seal. Superior Chemical Resistance: The PTFE-faced silicone septum provides excellent compatibility with a wide range of organic solvents and aggressive chemicals, protecting your samples and instruments. Excellent Resealing Property: The “no-slit” design and material elasticity allow the septum to reliably reseal after needle penetration, minimizing sample evaporation and cross-contamination. Secure and Anti-Slip Design: The blue polypropylene cap features a user-friendly grip for easy hand-tightening, ensuring a leak-proof seal without the need for excessive force. [caption id="attachment_11385" align="alignnone" width="4366"]Dimensional drawing of 9-425 screw cap for HPLC vials, 9mm diameter and 6.2mm height Standardized dimensions (9mm x 6.2mm) ensure perfect fit and compatibility.[/caption] [caption id="attachment_11386" align="alignnone" width="4366"]HPLC vial septa material composition showing white PTFE and red silicone layers PTFE (inertness) and silicone (elasticity) combine for optimal performance.[/caption] [caption id="attachment_11387" align="alignnone" width="4366"]HPLC vial septa material composition showing white PTFE and red silicone layers Aijiren Septa Material - PTFE/Silicone Composition[/caption] [caption id="attachment_11388" align="alignnone" width="4366"]"Precision Engineered Cap: Manufactured to exact 9-425 specifications (9x6.2mm) for a perfect, universal fit on all compatible autosampler vials, ensuring consistent torque and seal.  Superior Chemical Resistance: The PTFE-faced silicone septum provides excellent compatibility with a wide range of organic solvents and aggressive chemicals, protecting your samples and instruments.  Excellent Resealing Property: The “no-slit” design and material elasticity allow the septum to reliably reseal after needle penetration, minimizing sample evaporation and cross-contamination.  Secure and Anti-Slip Design: The blue polypropylene cap features a user-friendly grip for easy hand-tightening, ensuring a leak-proof seal without the need for excessive force.  " Engineered with ALUREN technology for consistent quality and performance.[/caption]
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