Liquid Seals

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Liquid Seals

Liquid Seals are critical components used in distillation, absorption, and extraction columns to maintain column pressure, prevent vapor backflow, and ensure leak-free operation. They provide a liquid barrier between column sections or process streams, allowing safe operation under vacuum, low-pressure, or ambient conditions.

Constructed from borosilicate glass 3.3, PTFE, or compatible metals, liquid seals offer chemical resistance, thermal stability, and long-term durability for laboratory, pilot, and industrial-scale columns.

Working Principle

1. Liquid fills the seal chamber, creating a pressure barrier.
2. Vapors or gases can pass through without bypassing the liquid level.
3. Maintains column vacuum or positive pressure as required.
4. Prevents cross-contamination between column sections and enhances process safety.

Key Features & Benefits

• Provides a reliable pressure barrier
• Prevents vapour backflow and cross-contamination
• High chemical and thermal resistance
• Compatible with glass, PTFE, and metal columns
• Easy installation, inspection, and maintenance
• Suitable for vacuum, low-pressure, and ambient operations

Material & Construction

• Material: Borosilicate Glass 3.3, PTFE, or metal alloys
• Design: U-shaped, loop, or column-integrated chamber
• Connections: Ground glass joints or flanged
• Surface: Smooth, chemically inert, resists fouling
• Customization: Seal height, diameter, and chamber shape based on column size

Technical Specifications

Custom dimensions available on request to suit column design requirements.

Applications

• Distillation columns (lab, pilot, industrial)
• Packed absorption towers
• Liquid-liquid extraction columns
• Vacuum and low-pressure systems
• Chemical, pharmaceutical, and petrochemical industries

Why Choose Our Liquid Seals?

• Ensures leak-free operation for high-efficiency columns
• Prevents vapour backflow and cross-contamination
• Compatible with corrosive and high-purity media
• Durable, maintenance-free, and long-lasting