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© LLC, TD Plastmass Group 2020

INN 7723909200

KPP 772301001


Thermoplastic synthetic composite

PLASTMASS™ PEI – is a composite of a thermoplastic synthetic material based on PEI (polyetherimide).

Intended for the manufacture of sliding parts operating at higher temperatures, speeds and loads than those of PLASTMASS™ PET.

The use of PLASTMASS™ PEI reduces friction and wear, and works without lubrication, that reduces operating costs. It is cheaper than PEEK (polyetheretherketone).


  • Up to +180°C hard, stiff, tough

  • Good durability

  • High dimensional stability

  • High chemical resistance

  • High hydrolysis resistance

  • Very high UV radiation resistance

  • Excellent machinability


  • Working temperature: -70°C till +180°C (+200°C)

  • Tensile strength (p): Max. 48 (142) MPa

  • Sliding speed (v): Max. 200 m/min

  • Fatigue (S): tensile fatigue strength at 20°C and 1E06 stress cycles, 1 Hz = 33 MPa

  • Resistance to UV radiation. Gamma-radiation: Limit absorbed dose 9000 kGy

  • Water absorption: max. 0,6 %, dimensional changes: 0,25 %

  • Fire behavior: oxygen index (LOI): 47 %, classification: V-0 (UL94), low flue gas emission


General chemical resistance:

  • PLASTMASS™ PEI is not affected by alcohols, automobile and aircraft fuel, lubricating materials, cleaning and even under load.

  • Resistant to weak acids and alkalis (PH-value <9), salt solutions, ether, hydrolysis of hot water and steam, UV and energy radiation.

PLASTMASS™ PEI advantages in comparison with standard PEEK:

  • With a similar toughness PLASTMASS™ PEI has several times higher ultimate elongation.

  • Higher PV-value (max. 300%).

  • Better dimensional stability in all PLASTMASS™ PEI types.

  • PLASTMASS™ PEI loses its rigidity at temperatures 50°C higher than PEEK.

  • Higher wear resistance and impact toughness.

PLASTMASS™ PEI advantages compared to bronze:

  • A wide range of blanks allows to bring them to the finished size and therefore to minimize the cost, expenses and time on unnecessary material processing.

  • Low friction coefficient and improved antifriction properties to increase the working period of units 3 times and more.

  • PLASTMASS™ PEI does not require a breaking-in because of its elastic properties, it has the ability to compensate geometric errors, due to the elastic deformation at the edge, and the local specific pressure greatly reduces by extending contact areas that leads to increased bearing force.

  • Work without lubrication, lubrication system failure does not lead to an emergency situation and «seizure».

  • Shock and vibration resistance, low noise characteristics of the sliding units.

  • High positioning accuracy and smooth movement at low feeds.

  • Work in polluted conditions: the ability of PLASTMASS™ PEI to absorb abrasive foreign particles or contamination - elastic or plastic introduction of particles, thereby not disturbing the sliding surfaces and not causing abrasive wear.


Rods (Ø6÷180 mm)

Pipe (outer Ø 30÷380 mm)

Sheets, thickness of 6; 8, 10; 15; 20; 26; 32 (370x1000 mm or 370x2000 mm)

Sheets, thickness of 24 mm (120x1000 mm or 120x2000 mm)

Detail based on customers’ drawings



If you have any questions about our products or materials or you can not find the information you are looking for, contact us via phone or email. Our team is at your disposal at any time and with pleasure.