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GEHR PSU™ Natural

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Unit of Measure

In order to provide an accurate quote for your part, you'll need to provide some information through our custom quote request form.

3. Please Select Dimensions *

Sheet widths and lengths are cut to nominal dimensions; Rod lengths are also cut to nominal dimensions. Nominal cuts can be undersized by up to .200 inches. Cut-to-size items are non-refundable. See our return policy for more details. Contact us if you need precision cut sizes.

3. Please Select Length *

Sheet widths and lengths are cut to nominal dimensions; Rod lengths are also cut to nominal dimensions. Nominal cuts can be undersized by up to .200 inches. Cut-to-size items are non-refundable. See our return policy for more details. Contact us if you need precision cut sizes.

General Info

GEHR PSU™ Natural is a high-performance, amorphous polysulfone (PSU) plastic rod renowned for its thermal stability, chemical resistance, and dielectric properties. Operating reliably across a broad temperature range from -148°F to 320°F (-100°C to 160°C), this material is well-suited for applications that demand durability in challenging environments.

Its high mechanical strength, combined with outstanding resistance to hydrolysis and radiation, makes it a popular choice for medical devices, electrical components, and industrial equipment. While PSU offers exceptional clarity and toughness, it should be noted that it has a moderate notch impact strength.

GEHR PSU™ Natural is available for precision machining and custom fabrication. It is an ideal solution for engineers and fabricators seeking a reliable, heat-resistant, and chemically stable thermoplastic rod for demanding applications.

Note:

  • FDA Compliance:
    • FDA Compliant.
  • ASTM Specification:
    • D6394
  • NSF Certification: GEHR PSU™ Natural rod material is certified to NSF Std 51 (food zone) and NSF Std 61 (Potable Water).
    • Note: This does not certify a finished part made from this material for the NSF specification; that is the responsibility of the customer, who will work directly with NSF on certifying the part.

Key Properties

  • Chemical Resistance
  • Dielectric Properties
  • Heat Resistance (up to 320°F / 160°C)
  • Hydrolysis Resistance
  • Mechanical Strength
  • Radiation Resistance
  • Thermal Stability
  • Toughness

Limitations

Applications

  • Aerospace components
  • Automotive parts
  • Electrical and Electronic Components
  • Food Processing Equipment
  • Medical Devices
  • Plumbing and Pipe Fittings
  • Sterilizable Packaging Materials

Resin Trade Names

Manufacturer Trade Names

  • GEHR PSU®

Boedeker Plastics, Inc. stocks & supplies plastic sheet, rod, tube, film and custom profiles and machine parts from these shapes that are produced from plastic resin. In many cases the manufacturer of the shape has their own product trade name. If your specification calls for a specific resin grade or manufacturer trade name, we can supply a shape made from that resin to meet your specification or suggest an equal. If you require a specific resin or brand it must be specified at the time of order.

Available Sizes

Important Note: Some sizes will require minimum quantity runs and longer lead times. Contact us for your specific size requirement. Rod Only Rod Sizing 96 Inch Length 0.375 Inch x 96.000 Inch- Natural Only 0.500 Inch x 96.000 Inch- Natural Only 0.625 Inch x 96.000 Inch- Natural Only 0.750 Inch x 96.000 Inch- Natural Only 1.000 Inch x 96.000 Inch- Natural Only 1.250 Inch x 96.000 Inch- Natural Only 1.500 Inch x 96.000 Inch- Natural Only 2.000 Inch x 96.000 Inch- Natural Only 48 Inch Length 2.250 Inch x 48.000 Inch- Natural Only 2.500 Inch x 48.000 Inch- Natural Only 2.750 Inch x 48.000 Inch- Natural Only 3.000 Inch x 48.000 Inch- Natural Only 3.500 Inch x 48.000 Inch- Natural Only 4.000 Inch x 48.000 Inch- Natural Only 4.500 Inch x 48.000 Inch- Natural Only

Available Colors

  • Natural

Safety Data Sheet

Download Safety Data Sheet

Typical Properties of GEHR PSU™ Natural

DETAIL
Description Value
Material Type Amorphous Thermoplastic
Chemical Name PSU Polysulfone
Trade Name Udel®
Additives Unfilled
Color Natural
Manufacturer GEHR Plastics Inc.
PHYSICAL
Property Test Unit of Measure Value
Density ASTM D792 g/cm³ 1.23
  ASTM D792 lb/in³ 0.045
Water Absorption, Saturation, Immersion ASTM D570 % by wt. 0.8
MECHANICAL
Property Test Unit of Measure Value
Tensile Strength ASTM D638 psi 10,900
Flexural Modulus ASTM D790 psi 377,000
IZOD Impact-Notched ASTM D256 ft-lb/in 1.6
THERMAL
Property Test Unit of Measure Value
Coefficient of Linear Thermal Expansion ASTM D696 x 10-5 in./in./°F 3.1
Heat Deflection Temp ASTM D648 °C at 264 psi 175
  ASTM D648 °F at 264 psi 347
Melting Point Temp ASTM D3418 °C 190
  ASTM D3418 °F 374
Max Continuous Operating Temp °C 160
  °F 320
Minimum Operating Temp °C -100
  °F -148
Flammability Rating UL94 NA HB
ELECTRICAL
Property Test Unit of Measure Value
Dielectric Strength ASTM D149 V/mil 940
Dielectric Constant at 1 MHz ASTM D150 NA 3.1
Dissipation Factor at 1 MHz ASTM D150 NA 0.006
Surface Resistivity ASTM D257 ohm/square 10^13
COMPLIANCE
Description Value
FDA Yes
USDA No
NSF Yes
3-A Dairy No
Canadian Food Inspection Agency No
USP Class VI No
OTHER
Description Value
ASTM Shape Spec D6394
UV Resistant No
Relative Cost $$$$
Machinability 3

Relative cost based on a scale of one dollar sign ($) as the lowest to ten dollar signs ($$$$$$$$$$) as the highest. Machinability based on a scale of 1 to 10, with 1 being the easiest and 10 being the most difficult to machine. NOTE: All information contained on www.boedeker.com, downloadable documents and printed literature is intended for technical reference only and considered to be accurate for reference purposes only. Boedeker Plastics, Inc. makes no guarantee and offers no warranty for fitness in use and strongly recommends the user validate any plastic, machined part, or product in a specific application for fitness in use.

GEHR PSU™ is a registered trademark of GEHR Plastics Inc.

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