Product Overview

BenefitsDesign Features Downloads & Links

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 3 inches 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.


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 HMT pressure-application components are made from custom-hardened stainless steel to prevent yielding under load, ensuring spring longevity and long-lasting seal performance.


Compatible with virtually all stored products; available in both stainless steel and aluminum, and with laminated PTFE vapor barrier.

Working range

The HMT Mini-Shoe Seal can accommodate rim spaces as small as 2.5”.

Lightweight option

The HMT Mini-Shoe Seal is available in aluminum for lightweight aluminum internal floating roofs.

Other 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 2.5 to 13 inches.
  • Works with both welded and riveted tank shells
  • PTFE or polyurethane fabric options
  • Stainless steel bolting hardware

Design Features

Hardened-steel pressure componentsEven pressure distributionDesigned for tight rim spacesBest-in-class vapor barriersSized to fit the tank

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 2.5 inches.

Best-in-class vapor barriers

Premium fabric options ensure optimal product compatibility and life span, even including flame-retardant PTFE options compliant with DIN 22118 standard.

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.

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