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Static Dissipative Acetal Copolymer ESd

Static dissipative acetal is a non-carbon-filled, permanently static dissipative material. It is non-migratory and non-humidity dependent. With enhanced lubricity, static dissipative acetal provides superior wear resistance and ease of machining. Its extremely low outgassing values and non-sloughing characteristics make it ideal for applications where particulate generation cannot be tolerated. Enhanced lubricity, chemically resistant, and dimensionally stable. 

They do not rely on atmospheric phenomena to activate, nor are surface treatments used to achieve dissipation. Static electricity is dissipated through these products as readily as it is dissipated along the surface. All of these products dissipate 5 KV in less than 2 seconds per Mil-B-81705C. Acetal SD (ESd) is ideal for fixturing used in the manufacturing of hard disk drives or for handling in-process silicon wafers.

Static dissipative acetal contains no carbon fibers or powders and is generally accepted for cleanroom use in medical applications. It has a surface resistivity of 109 to 1011 ohm/square and excellent bearing and wear characteristics.

Need to touch up a coating on cut or machined edges? Find out more about our Trim Fluid here.

Applications Include: 

  • Disk Drive Assembly Fixtures 
  • Semiconductor/Electronic Components
  • Telecommunication Hardware
  • Automotive Equipment

Brand Names

  • Unital® ESD
  • ZL® 900 AS
  • Tecaform SD

Emco Industrial Plastics doesn’t claim to represent all of the manufacturers or trade name products listed. This list is intended as a guide of typical materials available for purchase from Emco Industrial Plastics, Inc. For additional information, contact an Emco Industrial Plastics representative at [email protected]

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Technical Information

Stock Products Properties Applications Advantages Grades Downloads

Stock Products

Sheet 1/32″ – 1/4″ TH Standard 48″ x 96″; CTS White, Black
Film Custom Custom Custom

Give us your cut-to-size dimensions. We will precision-cut these plastics to your exact size. Additional sizes and colors available upon request.


Physical PropertiesUnitsASTMResults
Density lb/in3 D792 0.0376
Mechanical PropertiesUnitsASTMResults
Tensile Strength @yield psi D638 6
Tensile Modulus psi D638 610
Flexural Strength psi D790 9.6
Flexural Modulus psi D790 340
Hardness. Rockwell R D785 105
IZOD Impact Strength Notched ft-lb/in D256 8
Thermal PropertiesUnitsASTMResults
Heat Deflection Temp at 264 psi °F 198
Flammability Rating UL94 H-B

NOTE: The property values presented above are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers’ complete material property datasheets. All values at 73°F (23°C) unless otherwise noted.


  • Tub/Shower surrounds
  • Boat accessories
  • Electronic component housings
  • Automotive trim parts


  • Good strength and stiffness
  • Cost effective
  • Easily machined
  • Good chemical resistance
  • Durable
  • Bondable


  • Machine Grade. FDA compliant (natural and black)
  • Machine grade. non-FDA (natural and black)
  • Flame retardant grade (natural and black)
  • Static Dissipative (Black. Natural (beige). Semitransparent)


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