Polysulfone (PSU)

Polysulfone (PSU) Rods, Plates & Tubular Bars

Polysulfones (PSU) are tough, rigid, high-strength thermoplastics that are suitable for continuous use up to 300°F (149°C). PSU resins are resistant to oxidation and hydrolysis and withstand prolonged exposure to high temperatures and repeated sterilization. Polysulfones are highly resistant to mineral acids, alkali and salt solutions. Their resistance to detergents and hydrocarbon oils is good, but polar solvents such as ketones, chlorinated hydrocarbons, and aromatic hydrocarbons attack them.

These resins are also highly resistant to degradation by gamma or electron beam radiation. Electrical properties of polysulfones are stable over a wide temperature range and after immersion in water or exposure to high humidity.

Polysulfone excels in many fluid-handling applications and has successfully replaced brass in pressurized hot water applications for over 20 years. It exhibits low creep under a sustained load at elevated temperatures and can withstand continuous exposure to hot chlorinated water.

Key Features

  • High HDT of 207°C (405°F)
  • Superior toughness and impact strength
  • Exceptional long-term hydrolytic stability
  • Better chemical resistance than PEI
  • Withstands over 1,000 cycles of steam sterilization without any significant loss of properties
  • Inherently flame retardant
  • Transparent but colorable

Typical Applications

  • Sterilization cases and trays
  • Dental and surgical instruments
  • Medical devices
  • Aircraft interiors
  • Airline catering trolleys
  • Hot water fittings
  • Plumbing manifolds
  • Food service trays

Our extruded stock shapes of the following grades provide a wide range of performance options for demanding applications:

Unfilled Polysulfone:

Glass reinforced Polysulfone:

  • 10% Glass Fiber reinforced: Udel® GF110 (Natural, Black)

Please contact us to discuss custom PSU grade or color not listed above.

Quantum uses prime virgin raw materials only. All of our products are accompanied by certifications including lot and batch numbers as well as date of manufacture.


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