Ertalyte™ TX PET-P is a premium internally lubricated bearing grade that exhibits superior dimensional stability and wear resistance, a low coefficient of friction, high strength and rigidity, outstanding stain resistance and great chemical and abrasion resistance. Due to Ertalyte™ TX PET-P's low moisture absorption rate, this grade’s mechanical and electrical properties are unaffected by moisture, which gives this grade better wear and inertness over nylon and acetal products and also a lower wear rate than unmodified polyesters. These characteristics make Ertalyte™ TX PET-P ideal for use in applications that involve high pressure and velocity conditions and environments with soft metal and plastic mating surfaces where noise abatement is critical.
PROPERTIES
High mechanical strength, stiffness and hardness
Very good creep resistance
Low and constant coefficient of friction
Excellent wear resistance (comparable to or even better than Nylon grades)
Very good dimensional stability (better than Polyacetal)
Thermal Properties
Property
Value
Heat Deflection Temperature at 1.8MPa (264 psi) (ºC)
75
Continuous allowable service temperature in air
100
Mechanical Properties
Property
Value
Tensile Strength (MPa)
76
Tensile Modulus of Elasticity (MPa)
3,300
Compressive stress at 1% nominal strain (MPa)
31
Compressive stress at 2% nominal strain (MPa)
60
Compressive stress at 5% nominal strain (MPa)
102
Flexural Strength (MPa)
122
Charpy Impact Notched (kJ/m²)
2.5
Chemical Properties
Property
Value
Hot Water / Steam
Limited
Acids, Weak
Acceptable
Acids, Strong (pH 1-3)
Limited
Alkalies, Weak
Limited
Alkalies, Strong (pH 11-14)
Not acceptable
Hydrocarbons - Aromatic
Acceptable
Hydrocarbons - Aliphatic
Acceptable
Ketones, Esters
Acceptable
Chlorinated Solvents
Limited
Alcohols
Limited
Inorganic Salt Solutions
Acceptable
Electrical Properties
Property
Value
Dielectric Strength (kV/mm)
21
Certification Properties
Property
Value
FDA
Compliant
European Food Approval
Not compliant
NSF
Not compliant
3A-SSI
Not compliant
Canada AG
USDA
Compliant
Flammability (UL Rating)
HB
Medical use
FOOD - FDA FOOD - 3A-SSI FOOD - USDA
Miscellaneous Properties
Property
Value
Base Material
PET
Brand Family
Colors
Pale-Grey Light Blue
Density (g/cm3)
1.44
Water Absorption after 24 hrs immersion in water (%)
