LLG-8mm Combination Seal, PP Screw Cap, Black, Centre Hole, 8-425 Thread, Natural Rubber Red-Orange/TEF Transparent, 60° Shore A, 1.3 mm

The LLG Labware 8 mm Combination Seal, with PP screw cap, black centre hole design, and 8-425 thread, is designed for secure and accessible vial closure in analytical and chromatography workflows. This cap and septum combination allows direct syringe access through the centre hole while maintaining reliable sealing performance. With a natural rubber and TEF septum construction, it supports consistent sample handling, making it suitable for laboratories working with a wide range of solvents and analytical applications.

Key Features:

• Brand: LLG Labware
• 8-425 thread compatibility: Designed to fit standard 8-425 threaded vials, ensuring a secure and consistent seal in analytical laboratory applications.
• Black PP screw cap with centre hole: The centre hole design enables direct access to the septum for syringe-based sampling or injection without removing the cap, supporting efficient workflows.
• Natural rubber red-orange/TEF transparent septum: Combines the elasticity of natural rubber with a TEF surface layer, providing chemical resistance and reliable resealing performance during repeated punctures.
• 60° Shore A hardness: The septum hardness is optimised to balance easy penetration with effective sealing, helping maintain sample integrity during multiple uses.
• 1.3 mm septum thickness: Provides dependable sealing performance while supporting consistent puncture behaviour in analytical procedures.
• Suitable for chromatography and sample handling: Ideal for use in chromatography, sample preparation, and laboratory workflows requiring repeated vial access.
• Reliable protection against leakage and contamination: The cap and septum assembly helps minimise sample loss and external contamination during storage and analysis.

The LLG Labware 8 mm Combination Seal with centre hole is a practical choice for laboratories that require secure vial closure with convenient access for sampling and analysis.

Frequently Asked Questions

1. What vial type is this combination seal compatible with?
It is designed for use with standard 8-425 threaded vials.

2. What is the benefit of the centre hole design?
The centre hole allows syringe access through the septum without removing the cap, improving efficiency and reducing contamination risk.

3. What materials are used in the septum?
The septum is made from natural rubber with a transparent TEF layer for chemical resistance and resealing capability.

4. What does 60° Shore A indicate?
It refers to the hardness of the septum, providing a balance between easy puncture and effective sealing.

5. What applications is this product suitable for?
It is suitable for chromatography, sample preparation, and analytical laboratory workflows requiring repeated vial access.