LLG 10 mm Combination Seal PP Screw Cap, Black, Centre Hole, 10-425 Thread, Natural Rubber Red-Orange/TEF Transparent, 60° Shore A, 1.3 mm

The LLG Labware 10 mm Combination Seal, with PP screw cap, black centre hole design, and 10-425 thread, is designed for secure and accessible vial closure in analytical and chromatography workflows. This cap and septum combination allows convenient syringe access through the centre hole while maintaining dependable sealing performance during routine laboratory use. With a natural rubber and TEF septum construction, it is well suited to applications requiring repeated puncture, chemical compatibility, and reliable sample protection.

Key Features:

• Brand: LLG Labware
• 10-425 thread compatibility: Designed for use with standard 10-425 threaded vials, supporting a secure and consistent fit in analytical laboratory applications where dependable closure is essential.
• Black PP screw cap with centre hole: The polypropylene cap offers good chemical resistance and durability, while the centre hole design allows direct access to the septum for syringe-based sampling or injection without removing the cap.
• Natural rubber red-orange/TEF transparent septum: The septum combines the elasticity of natural rubber with a TEF surface layer, helping provide chemical resistance and practical resealing performance during repeated punctures.
• 60° Shore A hardness: The septum hardness is selected to provide a useful balance between puncture ease and sealing integrity, helping maintain sample protection during routine analytical use.
• 1.3 mm septum thickness: The septum thickness supports dependable sealing performance while allowing consistent penetration in standard laboratory sampling and injection procedures.
• Suitable for chromatography and sample preparation: This combination seal is well suited to chromatography, analytical sample preparation, and routine laboratory handling where repeated vial access is required.
• Helps reduce leakage, evaporation, and contamination: The cap and septum assembly is designed to support cleaner sample handling by helping minimise sample loss and contamination during storage and analysis.

The LLG Labware 10 mm Combination Seal is a practical choice for laboratories that need secure, chemically compatible, and easy-to-access vial closures for everyday analytical work. When you order through LabFriend, you gain access to trusted laboratory consumables, dependable sourcing, and support in selecting the right vial accessories for your application. Choose LabFriend for reliable closure solutions that help protect samples, support accurate analysis, and improve day-to-day laboratory efficiency.

Frequently Asked Questions

1. What vial type is this combination seal compatible with?
It is designed for use with standard 10-425 threaded laboratory vials.

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

3. What is the septum made from?
The septum is made from natural rubber in red-orange with a transparent TEF layer.

4. What does 60° Shore A indicate?
It refers to the hardness of the septum material, helping provide a balance between easy puncture and effective resealing performance.

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