PSU – Polysulfone

PSU is a translucent high-performance thermoplastic with a characteristic amber tint, combining heat resistance, creep resistance, radiation resistance and sterilization resistance in a single material. It is used for food handling equipment, laboratory and medical devices, aerospace components and membrane housings where long-term dimensional stability, chemical resistance and the ability to withstand sterilization are required.
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PSU – Polysulfone

PSU is an amorphous high-performance thermoplastic that delivers a well-balanced combination of thermal stability, chemical resistance, creep resistance and radiation resistance in a single material. Its characteristic translucency with a slight amber or yellowish tint is a distinguishing visual property that sets it apart from opaque high-performance plastics, and makes it particularly useful in applications where visual inspection of components, fluid levels or assembly conditions is required without compromising thermal or chemical performance.

PSU maintains its dimensional stability under sustained mechanical load better than many high-performance plastics at elevated temperatures, a property defined as creep resistance. This makes it a reliable choice for structural components that carry continuous load over long service periods.

PSU performs reliably in sterilization environments and is approved for direct food contact, which positions it as a practical choice across food handling equipment, laboratory instruments, medical devices and water filtration systems. It is supplied in sheets and round bars in standard stock in natural colour.

High Heat Resistance

Reliable thermal performance at elevated temperatures with stable mechanical and dimensional properties

Creep Resistance

Maintains dimensions under sustained mechanical load over long service periods at operating temperature

Radiation Resistance

Suitable for environments with gamma and X-ray exposure, including radiation-based sterilization processes

Chemical Resistance

Resistant to a broad range of aqueous media, detergents and industrial cleaning agents

Sterilization Compatible

Compatible with common sterilization methods used in food processing, laboratory and medical applications

Translucent Amber Material

Characteristic semi-transparency allows visual inspection of components and assemblies without compromising thermal or chemical performance

Available Product Forms

PSU is available in sheets and round bars in standard stock. Log in to check live stock availability, pricing and lead times for your specific dimensions.

Sheets

Available in 1250x620 mm format in thicknesses from 10 to 50 mm. Full range in standard stock.

Round Bars

Solid bars from 20 to 90 mm diameter in 1000 mm lengths. Full range in standard stock.

Cut-to-Size

Custom cut to your exact dimensions from standard sheet or bar stock.

Finished Parts

CNC-machined parts to your technical drawings. Suitable for filter housings, fluid handling components, laboratory instrument parts and food-contact structural components.

Typical Applications

PSU is used in applications that require a combination of heat resistance, sterilization compatibility, creep resistance and food or medical contact approval, particularly where translucency provides an additional functional advantage.

Food Handling Equipment

PSU is approved for direct food contact and is used for components in food processing equipment, fluid handling systems and food-contact structural parts where heat resistance, chemical resistance to cleaning agents and long-term dimensional stability are required.

Laboratory and Medical Devices

Applied in laboratory instrument housings, fluid handling components and medical device parts where sterilization resistance, chemical compatibility and dimensional precision are required. PSU's translucency allows visual monitoring of fluid flow and component condition in laboratory assemblies.

Aerospace Components

Used for lightweight structural and insulating components in aerospace assemblies where a high-performance thermoplastic with stable properties across a range of temperatures and low flammability characteristics is required.

Membrane Housing and Water Filtration

Applied in membrane housings, filter casings and water treatment system components where hydrolysis resistance, dimensional stability under sustained pressure and resistance to cleaning chemicals are required over long service intervals.

Sterilization Equipment

Components in sterilization equipment and autoclaving devices where repeated exposure to steam, hot water and sterilizing agents must be withstood without material degradation or dimensional change.

Chemical Processing Equipment

Used for structural and functional components in chemical processing where sustained load, chemical resistance and stable dimensions at elevated operating temperatures are simultaneously required.

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Frequently Asked Questions

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The platform offers engineering plastics in sheets, rods, tubes and cut-to-size formats, depending on material availability.

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Technical data and relevant material documentation are accessible through the platform.

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