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Proteus® O&P is used for orthotic and prosthetic applications. Because people come in all different shapes and sizes, orthotic and prosthetic devices must be custom fit – and that is where Proteus® O&P Grade comes in. Proteus® O&P Grade maintains the rigidity and durability required by the orthotics and prosthetics industry, while exhibiting top thermoforming performance.

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Technical Information

Stock Products Properties Applications Advantages Grades

Stock Products

Sheet .125′-1″ 48″x96″ CTS Bright White, Black

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 0.0329
Mechanical PropertiesUnitsASTMResults
Water Absorption, 24 hrs % D570 0.01
Tensile Strength @ yield psi D638 4800
Tensile Modulus KSI D638 190
Tensile Elongation @Break % D638 14
Flexural Strength psi D790 4800
Flexural Modulus KSI 195
Compressive Strength psi D695 5000
Compressive Modulus Ksi D695 200
Hardness, D 78
IZOD Impact Strength Notched ft-lb/in D256 1.2
Thermal PropertiesUnitsASTMResults
Heat Deflection Temp at 264 psi °F 210
Melting Temperature °F D3418 327
Max Operating Temp. °F 180
Flammability Rating UL94 UL94


  • Orthotic and prosthetic devices
  • Thermoformed part


  • Thermoforming performance
  • Rigid form of polypropylene used where stiffness is required
  • Chemical & corrosion resistant
  • No moisture absorption
  • Lot-to-lot consistency and formability


  • Proteus® Copolymer
  • Proteus® Homopolymer
  • Proteus® Premium Gloss
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