Metallic Shoe Seal

{
  "id": "MLC-T-ENV-017067",
  "term": "Metallic Shoe Seal",
  "field": "Environment",
  "definition": "1. Rim seal consisting of a band of metal (or other suitable material) as the sliding contact with the wall of the storage vessel, and a fabric seal to close the annular space between the band and the rim of the floating roof deck. The band is typically formed as a series of sheets (shoes) that are overlapped or joined together to form a ring. The lower end of the band extends into the stored liquid.\n\n2. Continuous seal that is constructed of metal sheets which are held vertically against the wall of the tank by springs, weighted levers, or other mechanisms and is connected to the floating roof by braces or other means. A flexible coated fabric (envelope) spans the annular space between the metal sheet and the floating roof.\n\n3. Includes but is not limited to a metal sheet held vertically against the tank wall by springs or weighted levers and is connected by braces to the floating roof. A flexible coated fabric (envelope) spans the annular space between the metal sheet and the floating roof. [40 CFR 60.111 (CFR 2013)]\n\n4. Metal sheets that are held vertically against the wall of the storage tank by springs, weighted levers, or other mechanisms and connected to the floating roof by braces or other means. A flexible coated fabric (envelope) spans the annular space between the metal sheet and the floating roof.",
  "references": [
    "40 CFR 63.1061 (CFR 2013)",
    "40 CFR 265.1081 (CFR 2013)",
    "40 CFR 60.111a (CFR 2013)",
    "40 CFR 63.1361 (CFR 2013)"
  ],
  "url": "https://mlchart.com/terminology/environment/metallic-shoe-seal/"
}