3M™ Interam™ Endothermic Mat E-54A

When properly installed, 3M™ Interam™ Endothermic Mats E-54A and E-54C provide a uniform covering that, when exposed to high temperatures, releases chemically-bound water to cool the outer surfaces of the wrap material and significantly retard heat transfer. Helps protect structural steel, critical electrical, and communication systems. 3M™ Interam™ Endothermic Mats E-54A and E-54C are non-flame supporting with low-smoke evolution. The flexible mat aids in installation and allows it to be applied on complex shapes and around corners more easily.

Product Description

3M™ Interam™ Endothermic Mat E‑54A is a flexible fire protection wrap that shields structural steel, electrical circuits, equipment enclosures, and membrane penetrations. When exposed to fire, its endothermic fibers release chemically bound water to absorb heat, offering extended fire resistance.

Key Benefits

  • Multi-Rating Protection: Up to 4 hr fire rating for steel (ASTM E119) and 3 hr for circuits (ASTM E1725).
  • Hydrocarbon & Jet Fire Tested: Rated for hydrocarbon pool fires and jet fires, plus standard cellulosic exposure.
  • Flexible & Rewrappable: Easy to cut wrap for complex geometries; allows inspection and reapplication.
  • Non-Corrosive: Stable inorganic fibers with stainless steel or aluminum backing.
  • No Maintenance: Once installed, it requires no ongoing upkeep.

Best For

  • Structural steel members
  • Electrical conduits and raceways
  • Equipment shrouds
  • Membrane penetration protection
  • Field and retrofit fire protection applications
  • High-risk fire zones (hydrocarbon/jet exposure)

Product Properties

Property Specification
Form Flexible endothermic mat wrap
Fire Ratings 4 hr structural (ASTM E119), 3 hr electrical (ASTM E1725)
Fire Type Resistance Hydrocarbon, jet, cellulosic fires (ASTM E1529/UL 1709, ISO 22899, ASTM E119)
Backing Stainless steel or aluminum (non-corrosive)
Installation Roll form—cuttable, wrap-applied, rewrappable
Maintenance None required once properly installed
Packaging Roll form (various widths & lengths)