Primary Mechanical Shoe Seal – For internal floating roof tanks
Robust primary sealing solution engineered for internal floating roof tanks,
delivering reliable vapour control, long service life, and consistent
performance in demanding operating environments.
Overview
The DirecTank Inner Shoe Primary Mechanical Shoe Seal
is a high-performance primary sealing solution
engineered for internal floating roof tanks.
Manufactured using robust stainless-steel components,
the system provides a tight, consistent seal across both
small and large annular rim gaps.
Installed between the floating roof and the tank shell, the seal
accommodates roof movement caused by changes in liquid
level and operating conditions. This design ensures reliable
sealing performance while supporting safe operation and
long-term asset protection.
Key Benefits
Reliable primary sealing performance across varying annular rim gaps
Designed specifically for internal floating roof applications
Reduced vapour loss and improved emissions control performance
Long service life in demanding operating environments
Suitable for both in-service and out-of-service installation
Reliable performance across a wide range of tank configurations
Technical Features
- Rim-mounted design with uni-pivot hanger arm
- Hardened high-tensile stainless-steel spring components
- All stainless-steel construction
- Optional stainless-steel–aluminium configuration available
- Premium vapour barrier fabric options, including polyurethane and PTFE
- Suitable for steel, aluminium, and composite internal floating roof systems
How the System Works
The Inner Shoe Seal utilises a durable uni-pivot hinge configuration that
allows the shoe plate to maintain consistent contact with the tank shell as
the floating roof moves.
Complementary compression elements manufactured from hardened spring
steel provide the structural rigidity required to accommodate shell
irregularities and small annular rim spaces. This design ensures reliable
sealing performance under demanding operating conditions.
Installation and Suitability
- Can be installed during in-service or out-of-service periods
- Suitable for most internal floating roof styles and configurations
- Ideal for retrofitting to replace underperforming or ageing seals
- Designed to accommodate tank shell inconsistencies
Compliance and Standards
DirecTank floating roof seal solutions are engineered in line with relevant industry
codes and recognised standards, supporting safe operation, regulatory compliance,
and long-term reliability throughout the asset lifecycle.
This product is designed to support compliance with applicable environmental and air
quality regulations, including EPA 40 CFR 60 and relevant local Air Quality Management
District requirements.
Resources and Next Steps
- Download the Primary Mechanical Shoe Seal brochure →
- Speak to a DirecTank engineer about your application →
- View compatible secondary sealing solutions →