Product Description

SOLIMIDE® AC-550 polyimide foam is used in aircraft and aerospace markets as a lightweight, non-wicking, thermal and acoustic foam insulation material where fire resistance, non-toxic properties, and the absence of smoke generation are critical. AC-550 is formaldehyde-free and demonstrates outstanding long term stability under humid conditions and after temperature cycling. SOLIMIDE® AC-550 insulation is used in a variety of applications, including aircraft fuselage, under floor, ECS ducts and equipment. The thermal and acoustic foam insulation can be cut into a variety of shapes and sizes, and is compatible with many different facings, coatings and adhesives to meet end user requirements.

Specifications / Certificates

  • • Boeing BMS 8-300
  • • Bombardier BAMS 544-006
  • • Boeing (Douglas) DMS 2330
  • • ASTM C 1482
  • • Hamilton Sundstrand HS 14190
  • • Lockheed Martin LAC 23-4831
  • • SOLIMIDE® Foams may meet additional specifications that are not listed here. Please contact us to determine if it meets your specifications or other requirements.

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Density  lb/ft3 (kg/m3) 0.44 (7.1)  ASTM D3574 Test A,
IOS 845
FAA Radiant Panel
FAR 25.856(a)
Smoke Developed Index
Flaming & Non-flaming Modes
  <5 ASTM E662
Noise Reduction Coefficient (NRC), 1
in (25mm)
  0.75 ASTM C423 and E795,
Mounting A
Max Continuous Use Temperature °F(°C) 400 (200)  
Thermal Conductivity at
0.32 (0.046) ASTM C518
Offgassing/Outgassing TMI % <1.0 ASTM E595
Offgassing/Outgassing CVCM % <0.1 ASTM E595


  • -  Aerospace and defense tubing, gaskets and duct insulation
  • -  Aircraft fuselage and under floor insulation