Mini-Shoe® Primary Seal
Primary Mechanical Shoe Seal for Both Steel and Aluminum Internal Floating Roofs
The Mini-Shoe Primary Seal for Internal Floating Roofs is ideal for internal floating roof applications and can be mounted on any type of roof. The Mini-Shoe hanger system can collapse to less than 76 mm to navigate tight rim spaces. The Mini-Shoe is available in both stainless steel and aluminum hanger options, to apply steel or aluminum IFRs, respectively. The Mini-Shoe has excellent chemical compatibility for nearly any stored product when combined with HMT’s laminated PTFE vapor barrier.
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- Design features
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Benefits
- No gapping
Due to its excellent working range and superior pressure application system, the HMT Mini-Shoe Seal maintains a tight seal even in wide rim spaces and with shell verticality and roundness anomalies. - Long life
All pressure components are made of specially hardened stainless steel to prevent deformation under load, ensuring long-lasting spring function and reliable sealing performance. - Compatibility
Compatible with virtually all stored products; available in both stainless steel and aluminum, and with laminated PTFE vapor barrier. - Working range
Can be adapted to rim spaces as small as 63.5 mm. - Lightweight options
Available in aluminium version for light aluminium IFRs.
Additional benefits and options
- Bolt-on design for fast, easy installation and repair
- Channel-style shoe hanger assembly — accommodates all aluminum pontoon roofs
- Standard hanger design accommodates rim spaces from 63.5-330 mm.
- Works with both welded and riveted tank shells
- PTFE or polyurethane fabric options
- Stainless steel bolting hardware
Design features
Hardened steel pressure components
Custom-hardened steel will not fatigue over time, maintaining proper sealing pressure against the tank shell and preventing gaps over the life of the seal.
Even pressure distribution
Each shoe is equipped with three sets of pusher bars, for a total of six pressure zones. This ensures even pressure distribution and allows the shoe to conform well to local anomalies in shell roundness.
Designed for tight rim spaces
The innovative feature of this seal is the HMT Mini-Shoe hanger assembly. It successfully maintains positive gap-sealing ability while accommodating rim spaces as small as 63.5 mm.
Best-in-class vapor barriers
Premium fabrics ensure optimal product compatibility and long service life, including flame retardant PTFE according to DIN 22118.
Sized to fit the tank
All tank shells are not alike, and it’s critical that seals are designed to handle unique rim-space requirements. HMT’s engineering and manufacturing automation allow each seal to be manufactured to fit the specific rim space and/or verticality data provided by the purchaser, ensuring optimal performance and mitigating the chance of operational issues over time.
Documents for download
HMT is a leader in the energy industry for aboveground tank technology and environmental solutions for the storage of oil and gas products.
HMT's products include internal and external sealing systems, including gas-tight primary seals, floating suction and drainage systems, aluminium vaults, pontoon-based floating roofs, full contact roofs, seamless composite roofs and various emission reduction devices.
HMT operates throughout the United States as well as in Europe and the Middle East.
Our customer promise
Right solution, technical expertise and commitment is what you can expect from us as your partner or supplier.
Solutions
Solutions for specific applications in environmental and process engineering, as well as industrial spray processes.
Right solution, delivered on time
Delivering the right solution on time requires co-operation, structure, attention to detail and following a process throughout the project.