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Direct X Primary Mechanical Shoe Seal

Direct X Primary Mechanical Shoe Seal For external floating roof tanks

Engineered primary sealing solutions designed to maintain consistent contact with the tank shell, minimise vapour loss, and deliver reliable performance across wide rim gaps and demanding operating conditions.
Designed for external floating roof tanks, the Direct X primary mechanical shoe seal provides robust, long-term sealing performance across petrochemical, fuel, and industrial storage applications.
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Overview

The Direct X Primary Mechanical Shoe Seal is a
high-performance primary sealing solution developed for
external floating roof storage tanks. Installed between the
floating roof and the tank shell, the system provides a
continuous mechanical barrier to minimise vapour
emissions and support safe, compliant operation.

Manufactured using robust metallic components, the Direct X seal is engineered to maintain consistent contact with the tank shell while accommodating roof movement caused by changes in liquid level, temperature, and operating conditions. This ensures reliable sealing performance across a wide range of rim gaps and tank shell conditions.
Direct X primary mechanical shoe seals are suited to applications where durability, emission control, and long-term operational reliability are critical.

Design & Construction

The Direct X seal incorporates a mechanical shoe design engineered to deliver reliable primary sealing performance under demanding external operating conditions.

Key design features include:
  • Mechanical shoe construction to maintain consistent contact with the tank shell
  • Robust metallic components engineered for long service life
  • Compression mechanisms designed to accommodate wide and variable rim gaps
  • Configurations suitable for both in-service and out-of-service installation
  • Reliable performance under environmental exposure typical of external floating roof tanks

Key Benefits

Consistent primary sealing performance

Maintains reliable contact with the tank shell across varying rim gaps and operating conditions.

Reduced vapour emissions

Helps minimise vapour emissions by providing an effective primary sealing barrier.

Designed for external floating roof applications

Engineered to perform reliably in exposed environments subject to wind, temperature variation, and roof movement.

Durable, low-maintenance construction

Robust metallic components support long service life and dependable, low-maintenance operation.

Installation flexibility

Suitable for installation during planned outages or in-service conditions, supporting operational flexibility and efficiency.

Applications

Direct X Primary Mechanical Shoe Seals are suitable for use across a wide range of external floating roof storage applications, including:
  • Petrochemical storage tanks
  • Fuel and hydrocarbon storage tanks
  • Industrial liquid storage facilities

Compliance & Standards

Designed to meet recognised industry expectations for safety, environmental performance, and operational reliability, Direct X primary mechanical shoe seals support regulatory compliance throughout the asset lifecycle.
Solutions are developed in line with relevant industry codes and standards, helping operators manage emissions, maintain safe operation, and protect long-term asset performance.
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