11125 I-10 East
Orange, TX 77630
1-800-351-0026
409-745-2002
fax: 409-745-4277
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Ertalyte® PET

PET is an unreinforced, semi-crystalline thermoplastic polyseter derived from Polyethylene Terephthalate. It has excellent wear resistance. Low coefficient of friction, high flexural modulus, and superior dimensional stability make it a versatile material for designing mechanical and electromechanical parts. Because PET has no centerline porosity, the possibility of fluid absorption and leakage is virtually eliminated.

Typical Applications:
Ertalyte® PET-P Properties
Property ASTM or UL Test Ertalyt® Unfilled Ertalyte® TX Lubricated
Water Absorption (24hrs) (%) D-570 0.07 0.06
Density (lb/in³) D-792 0.051 0.052
(g/cm³) 1.41 1.44
IZOD Notched Impact (ft-lb/in) D-256 0.5 0.4
Tensile Strength (psi) D-638 12,400 11,000
Tensile Modulus (psi) D-638 460,000 500,000
Tensile Elongation at Break (%) D-638 20 5
Hardness (Rockwell R) D-785 M93 / R125 M84
Compressive Strength (psi) D-695 15,000 15,250
Compressive Modulus (psi) D-695 420,000 400,000
Flexural Strength (psi) D-790 18,000 16,000
Flexural Modulus (psi) D-790 490,000 460,000
Thermal Conductivity (BTU-in/ft²-hr-°F) C-177 2.0 1.9
(x 104 cal/cm-sec-°C) 6.9 6.6
Heat Deflection Temp at 264 psi (°F / °C) D-648 240 / 116 180 / 82
Coefficient of Linear Thermal Expansion (x 10-5 in./in./°F) D-696 3.30 4.50
Flammability Rating   UL-94 H-B H-B
Melting Temperature (°F / °C) D-3418 491 / 255 491 / 255
Max Operating Temp (°F / °C) - 180 / 82 180 / 82
Dialectric Strength, 1/8" thick (V/mil) D-149 385 -
Dialectric Constant at 1 MHz   D-150 - -
Dissipation Factor at 1 MHz   D-150 - -
Volume Resistivity at 50% RH (ohm-cm) D-257 >1013 >1013
Physical Mechanical Thermal Electrical