1.5mL Screw Neck ND8

Black 8-425 Screw Cap, 8mm Red PTFE/White Silicone Septa, 1.5mm Thick

Catalog #: Screw Closures ND8

8-425 black screw cap with red PTFE/White Silicone septa. Nokelab is a leading Chinese HPLC vial caps manufacturer and provides reliable sealing for HPLC, GC, and LC-MS laboratory applications.

Available SKUs

Model Specification MOQ
NKSSC-8-B 8*1.5mm, Red PTFE/White Silicone 1 pk
NKSSC-8-B-P 8*1.5mm, Red PTFE/White Silicone, Pre-slit 1 pk
Ships within 5-7 business days
Certificate of Analysis included
Quality guaranteed

Product Overview

8-425 black screw cap with red PTFE/White Silicone septa. Nokelab is a leading Chinese HPLC vial caps manufacturer and provides reliable sealing for HPLC, GC, and LC-MS laboratory applications.

Research Applications

  • This version is a less-widely design for 2 mL vials and is compatible with short or standard-opening 2 mL glass and polypropylene vials, 2 mL micro vials, and 2 mL High Recovery Vials.
  • This combination is ideal for a wide range of applications, especially HPLC with less volatile samples or when snap/crimp vials are unsuitable.
  • Compatible with wide-opening 2 mL glass and polypropylene vials, including micro and high-recovery formats.
  • Compatible with all major autosampler brands
  • Manufactured in ISO Class 7 cleanroom

Key Features

  • Low extractables and adsorption

Technical Support

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OEM Services

Need modifications or larger quantities? Request a custom synthesis quote.

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Closure type Screw closure ND8
Cap Material Polypropylene (PP)
Septa material Red PTFE/White Silicone
Septa thickness 1.5 mm
Septa hardness 45° shore A
Technique GC, GC & GC/MS, LC, LC & LC/MS, Sample Preparation

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Need OEM or a Custom Configuration?

We support practical, production-ready customization for vials, caps, and septa. Share your autosampler type, dimensions, septa preference, and packaging needs—our team will confirm feasibility and lead time.

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