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Duratron and Vespel (PI)

Polyimide (sometimes abbreviated PI) is a polymer of imide monomers. Polyimides are known for thermal stability, good chemical resistance and excellent mechanical properties. Typical polyimide parts are not affected by commonly used solvents and oils — including hydrocarbons, esters, ethers, alcohols and freons. They also resist weak acids but are not recommended for use in environments that contain alkalis or inorganic acids.

  • Duratron D7000 PI
    Polyimide (PI) • Compression Molded Grade •Brown Color
    Duratron D7000 PI is an exceptional value for applications where thermal requirements exclude Duratron PAI and do not require the extraordinary thermal resistance of Duratron PBI. Duratron PI is available in several grades for structural and wear applications and in the broadest range of shapes - particularly thick sheets, larger sheets geometries and heavy-wall tubes. It offers good mechanical performance for applications that demand higher temperature resistance. Duratron D7000 PI machinable shapes are ideal starting points for designs that reduce weight, extend length of service before maintenance or replacement and reduce overall cost by increasing process uptime. Duratron PI materials are just one of the solutions in the machinable plastics industry's broadest product line.

  • Vespel SP-1
    Polyimide (PI) • Compression Molded Grade •Brown Color
    Need a material with superior wear and insulation properties? Semiconductor manufacturers often find Vespel SP-1 products useful in their production processes. And, with operating temperatures from cryogenic to 300 degreesC, great plasma resistance, plus a UL rating for minimal electrical and thermal conductivity.

  • Vespel SP-21
    Polyimide (PI) • Compression Molded Grade •Brown Color
    The extraordinary properties of Vespel, a DuPont product made of high-performance SP polyimide resin, make it the optimal choice for tough applications such as parts used in automobiles, heavy-duty off-road equipment, jet engines and semiconductors. Vespel® is not brittle, even at -400 degrees Fahrenheit. It also performs continuously at temperatures up to 600 degrees Fahrenheit and intermittently up to 1,000 degrees Fahrenheit. Vespel® can operate at extremely high PVs. Special metalworking equipment and techniques are not needed to machine this product. Typical Vespel® parts include bearings, bushings, insulators, gaskets and thrust washers.

    For Vespel® SP-21, 15% graphite by weight is added to the base resin for increased wear resistance and reduced friction in applications such as bearings, thrust washes, bushings, seal rings, slide blocks and other wear surfaces. Vespel® SP-21 has the highest mechanical properties of the graphite-filled grades.

  • Vespel SP-211
    Polyimide (PI) • Compression Molded Grade •Brown Color
    For Vespel SP-211, 10% Teflon® (PTFE) and 15% graphite by weight are added to the base resin for the lowest coefficient of friction over a wide range of operating conditions. Vespel® SP-211 also has excellent wear resistance up to 300 degrees Fahrenheit. Typical applications include sliding or linear bearings as well as many of the wear and friction applications for which the other Vespel® grades are suitable.

NOTE: The information contained herein are intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. It is given without obligation or liability. Contact us for manufacturers' complete material property datasheets.

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