HYDEX® 4101L

pbt polyester lubricated

HYDEX 4101L natural is the lubricated version of HYDEX 4101 PBT polyester.  Like its un-lubricated sister resin, HYDEX 4101L is a more impact resistant polyester that is better suited to many fast paced industrial and food processing environments than other lubricated PET polyesters available.  It is a food grade plastic material that can meet most agency requirements for food contact compliance, and is ideal for machined parts in food processing equipment that require a lower coefficient of friction, and higher wear properties. HYDEX 4101L has excellent resistance to typical cleaning chemicals such as chlorine and caustic solutions and has a very low moisture absorption rate.



Chemical designation
PBT (Polybutylene terephthalate)
1,36 g/cm3

Main Features

  • very good chemical resistance
  • resistent to cleaning agents
  • low moisture absorption
  • good impact strength
  • high dimensional stability
  • good slide and wear properties
  • high stiffness

Target industries

Technical details

  • Mechanical properties
    Mechanical propertiesValueUnitConditionTest Method
    Tensile strength6,600psiASTM D 638
    Modulus of elasticity
    (tensile test)
    350,000psiASTM D 638
    Elongation at yield30%ASTM D 638
    Modulus of elasticity
    (flexural test)
    350,000psi@ 73 °FASTM D 790
    Impact strength (Izod)0.90ftlbsinASTM D 256
    Coefficient of friction0.11-Dynamic (vs. steel)-
    Wear rate38*10-10psi-fpm@ 2000 PV-
    Coefficient of friction0.08-Static (vs. steel)-
    Compression strength2,800psi@ 73 °F, 1% strainASTM D 695
    Compression strength10,500psi@ 73 °F, 10% strainASTM D 695
    Compression modulus275,000psiASTM D 695
    Rockwell hardness75 (115)-M Scale (R Scale)ASTM D 785
    Flexural strength11,500psiASTM D 790
  • Thermal properties
    Thermal propertiesValueUnitConditionTest Method
    Deflection temperature195F@264 psiASTM D 648
    Service temperature221FLong Term-
  • Other properties
    Other propertiesValueUnitConditionTest Method
    Moisture absorption0.07%@ 24 hrs, 73 °FASTM D 570
    Limiting PV15,700psi-fpm@ 100 fpm-

Stock program