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Kydex® 311 is a co-extruded high impact thermoplastic sheet that is cost competitive with fire retardant ABS/PVC (FR-ABS) formulations but with significantly higher impact strength and extensibility. Kydex® 311 is less hygroscopic than FR-ABS and typically does not require pre-drying. It offers impact resistance, more uniform forming, less wall thinning and greater resistance to a broad range of chemicals and cleaning solutions.

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At a Glance

Generic Name
Polymethyl Methacrylate/Polyvinyl Chloride

Available In

UL94 V-0, 5-V

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Technical Information

Stock Products Properties Applications Advantages Grades

Stock Products

Sheet .060” to .350” 48″x96″ CTS Call for available 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 1.35
Mechanical PropertiesUnitsASTMResults
Tensile Strength psi D638 6100
Flexural Strength psi D790 9600
Thermal PropertiesUnitsASTMResults
Flammability Rating UL94 V-0, 5V
Heat Deflection Temp at 264 psi °F 168


  • Exhibits and Displays
  • Medical products
  • Store fixture components
  • Machine housing
  • Miscellaneous applications


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


  • Kydex® 311 MB
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