Duratron® PBI

Product Overview

  • Extremely high maximum allowable service temperature in air (310°C continuously,
    going up to 500°C for short periods of time)
  • Excellent retention of mechanical strength, stiffness and creep resistance over a
    wide temperature range
  • Excellent wear & frictional behaviour
  • Extremely low coefficient of linear thermal expansion
  • Excellent resistance against high energy radiation (gamma- and X-rays)
  • Inherent low flammability
  • High purity in terms of ionic contamination
  • Good electrical insulating and dielectric properties

Duratron® PBI

Product Details

Duratron CU60 PBI is the highest performance engineering thermoplastic available today. It offers the highest heat resistance and mechanical property retention over 205 °C (400 °F) of any unfilled plastic. It has better wear resistance and load carrying capabilities at extreme temperatures than any other reinforced or unreinforced engineering plastic.

As an unreinforced material, Duratron CU60 PBI is very "clean" in terms of ionic impurity and it does not outgas (except water). These characteristics make this material very attractive to semiconductor manufacturers for vacuum chamber applications and for the aerospace industry. Duratron CU60 PBI has excellent ultrasonic transparency which makes it an ideal choice for parts such as probe tip lenses in ultrasonic measuring equipment.

Duratron CU60 PBI is also an excellent thermal insulator. Other plastics in melt do not stick to Duratron CU60 PBI. These characteristics make it ideal for contact seals and insulator bushings in plastic production and molding equipment. Usually Duratron CU60 PBI is used for critical components to decrease maintenance costs and to gain valuable production "uptime". It is used to replace metals and ceramics in pump components, valve seats (high tech valves), bearings, rollers, high temperature insulators.


  • keyboard_arrow_downHigh Heat Insulator Bushings

    Bushings used in hot runner plastic injection molds made of Duratron CU60 PBI allow the plastic being molded to remain in melt as the part "freezes" in the cool mold. Bushings last longer and ease clean up since hot molten plastics do not stick to Duratron CU60 PBI. (Prior materials: Vespel® PI, Ceramic)

  • keyboard_arrow_downElectrical Connectors

    For an extra margin of safety, an aircraft engine manufacturer replaced connectors exposed to temperatures over 205 °C (400 °F) with Duratron CU60 PBI. (Prior material: Vespel® PI)

  • keyboard_arrow_downBall Valve Seats

    Seats manufactured from Duratron CU60 PBI excel in high temperature fluid handling service. (Prior material: Metal)

  • keyboard_arrow_downClamp Rings

    Parts machined from Duratron CU60 PBI for gas plasma etching equipment last longer than polyimide parts due to reduced high energy erosion rates. Because they need replacement less often, valuable production "uptime" is gained. (Prior material: Vespel® PI)

Duratron CU60 PBI is extremely hard and can be challenging to fabricate. Polycrystalline diamond tools are recommended when fabricating production quantities. Duratron CU60 PBI tends to be notch sensitive. All corners
should be radiused (1,0 mm min.) and edges chamfered to maximize part toughness. High tolerance fabricated components should be stored in sealed containers (usually polybags with desiccant) to avoid dimensional changes due to moisture absorption. Components rapidly exposed to temperatures above 205 °C (400 °F) should be "dried" prior to use or kept dry to avoid deformation from thermal shock.