Engineering 185°F - 300°F | Polyphenylene Oxide (PPO)


NORYL®, due to its inherent chemical composition, exhibits unusually low moisture absorption. Therefore, good electrical insulating properties are realized over a wide range of humidity and temperature conditions. Chemical attack from water, most salt solutions, acids and bases is also minimal with NORYL®. The addition of glass fiber reinforcement enhances both the mechanical and thermal properties of the basic NORYL® material.

  • Good electrical insulating properties
    Due to its extremely low water absorption with values as low as 0.07%, NORYL® is an excellent electrical insulating material.
  • Long-term dimensional stability
  • Superior impact strength
    NORYL® has a notched Izod impact strength of 3.5 ft-lbs/in.
  • NORYL® exhibits a continuous use temperature in excess of 220°F
  • Wide range of UL flammability ratings from
    UL94 HB to UL94 V-1
  • Light weight
    NORYL®, with a density of 0.0383 lbs/in3, can be used in applications where weight is a significant consideration.
  • Thermoformable capability
  • Possesses good hydrolytic stability

NORYL® exhibits a broad range of outstanding properties for applications in computers and business equipment, automotive, electrical insulation, telecommunications, appliances, electronics, and many other industries.

Properties Condition Value   Test Method Comment
Mechanical Modulus of elasticity (tensile test) @ 73°F 350,000 psi ASTM D 638  
Tensile strength at break @ 73°F 9,200 psi ASTM D 638  
Elongation at break @ 73°F 25 % ASTM D 638  
Flexural strength @ 73°F 13,400 psi ASTM D 790  
Modulus of elasticity (flexural test) @ 73°F 370,000 psi ASTM D 790  
Impact strength (Izod) @ 73°F 3.5 ft-lbs/in ASTM D 256  
Rockwell hardness @ 73°F R Scale 119   ASTM D 785  
Coefficient of friction Static 0.39   ASTM D 3702  
Coefficient of friction Dynamic, 40 psi, 50 fpm 0.32   ASTM D 3702  
Thermal Vicat softening point


310 °F -  
Deflection temperature @ 66 psi 279 °F ASTM D 648  
Deflection temperature

@ 264 psi

254 °F ASTM D 648 1) 1) Injection molded sample
Service temperature Intermittent 230 °F -  
Service temperature

Long term

220 °F -  
Thermal expansion (CLTE)   3.3*105 in/in/°F ASTM D 696  
Electrical Volume resistivity @ 73°F 1*1017 Ω*cm ASTM D 257  
Dielectric strength   500 V/mil ASTM D 149  
Dissipation factor @ 60 Hz, 73°F 0.0007   ASTM D 150 2) 2) Injection molded samples
Dielectric constant @ 60 Hz, 73°F, 50% RH 2.7   ASTM D 150  
Other Moisture absorption @ 24 hours, 73°F 0.07 % ASTM D 570  
Flammability (UL94)   V-1   3) 3) thickness greater than 1.5 mm, injection molded samples
Flammability (UL94)   V-0   4) 4) thickness greater than 6 mm, injection molded samples

This information is only to assist and advise you on current technical knowledge and is given without obligation or liability. All trade and patent rights should be observed. All rights reserved. Data obtained from extruded shapes material.
TECANYL ® - Ensinger Industries, Inc.