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Kydex® 5555 is a low heat release aviation sheet specially formulated to meet the safety needs of the aviation industry. Kydex® 5555 meets all fire retardancy requirements set forth in Federal Aviation Regulations 25.853 paragraphs (a) and (d) including low heat release (65/65) in the OSU rate of heat release test. It exceeds the heat release to a level of 55/55.

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At a Glance

Generic Name
Polymethyl Methacrylate/Polyvinyl Chloride

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Technical Information

Stock Products Properties Applications Advantages Grades

Stock Products

Sheet .300” and up 48″x96″ CTS Over 200 Custom Colors

Give us your cut-to-size dimensions. We will precision-cut these plastics to your exact size. Additional sizes and colors available upon request.


Physical PropertiesUnitsASTMResults
Density lb/in³ D792 1.52
Mechanical PropertiesUnitsASTMResults
Tensile Strength psi D638 6180
Flexural Strength psi D790 11,780
Thermal PropertiesUnitsASTMResults
Heat Deflection Temp at 264 psi °F 168.6


  • Seat backs
  • Window reveals
  • Bulkhead components
  • Ceiling components


  • Rigid
  • Impact resistance
  • Easy to form
  • Easy to machine
  • High break resistance
  • Chemical resistant


  • Kydex® 5555 MB
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