LLG 20 mm Combination Seal, Magnetic Bimetal Cap, Red Lacquered, 8 mm Centre Hole, Moulded Septa Butyl/PTFE Grey, 50° Shore A, 3.0 mm

The LLG 20 mm Combination Seal, with magnetic bimetal cap, red lacquered finish, 8 mm centre hole, and moulded butyl/PTFE grey septa, is designed for secure and reliable vial sealing in analytical laboratory applications. Engineered for consistent performance, this closure supports effective sample protection while allowing convenient access for needle-based sampling or automated systems. Its robust construction and defined septa hardness make it suitable for workflows that require dependable sealing and repeated puncture performance.

Key Features:

• Brand: LLG Labware
• 20 mm combination seal format: Designed for compatible laboratory vials requiring a 20 mm closure, supporting consistent and secure sealing in analytical and sample handling workflows.
• Magnetic bimetal cap construction: The cap provides strong mechanical stability and is well suited to automated crimping and decapping systems, helping improve efficiency in high-throughput environments.
• Red lacquered cap finish: The lacquered coating offers additional surface protection while enabling easy visual identification during handling and storage.
• 8 mm centre hole for access: The centre hole allows needle or probe entry without removing the seal, supporting sampling, injection, and automated analytical processes.
• Moulded butyl/PTFE septa: The moulded septa construction provides consistent material distribution, with butyl offering elasticity and PTFE providing chemical resistance on the sample-facing side.
• 50° Shore A hardness: This medium hardness supports a balance between puncture resistance and sealing integrity, making it suitable for applications requiring repeated access.
• 3.0 mm septa thickness: The thicker septa design enhances sealing performance and durability, helping maintain closure integrity during demanding workflows.
• Suitable for analytical laboratory use: This combination seal is ideal for laboratories requiring reliable closure solutions for chromatography, storage, and routine sample preparation.

The LLG 20 mm Combination Seal is a dependable choice for laboratories that require secure sealing, consistent septa performance, and compatibility with automated systems. When you source through LabFriend, you gain access to trusted laboratory consumables, dependable supply, and support in selecting the right closure components for your workflow. Choose LabFriend for sealing solutions that help maintain sample integrity and support efficient laboratory operations.

Frequently Asked Questions

1. What vial size is this combination seal designed for?
This seal is designed for laboratory vials that use a 20 mm closure format.

2. What is the purpose of the 8 mm centre hole?
The centre hole allows access with needles or probes without removing the seal, making it suitable for sampling and analytical workflows.

3. What materials are used in the septa?
The septa is made from moulded butyl with a PTFE-facing layer, providing flexibility and chemical resistance.

4. What does 50° Shore A hardness indicate?
It refers to the firmness of the septa, offering a balance between ease of penetration and sealing durability.

5. What is the septa thickness?
The septa thickness is 3.0 mm, providing enhanced sealing performance and durability for repeated use.