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Delrin AF 100 blend stock shapes are a 13% PTFE fiber filled homopolymer acetal. They offer an improved coefficient of friction, better lubricity, and improved wear characteristics over unfilled and PTFE powder filled acetals.

This advanced acetal material uses a combination of PTFE fibers uniformly dispersed in Delrin acetal resin. The combination results in improved wear characteristics along with strength, toughness, dimensional stability and machinability.

The materials exceptional wear properties and internal lubrication serves to reduce or elimanate the need for external lubricants. This material can also be produced in a full strength 20% PTFE filled version.

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At a Glance

Generic Name
Polyoxymethylene, Polyacetal

Available In
Sheet, Rod

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Technical Information

Stock Products Properties Applications Advantages

Stock Products

Sheet .250 – 3” 24” x 48’, 12” x 48”, 48” x 96” Grey
Rod .250 – 3″ 96”, 120” Grey

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 1.53
Water Absorption, 24 hrs % D570 0.12
Mechanical PropertiesUnitsASTMResults
Tensile Strength @ yield psi D638
Tensile Modulus psi D638 360000
Tensile Elongation @Break % D638 10
Flexural Strength psi D790 12000
Flexural Modulus psi D790 445000
Compressive Strength psi D695 14000
Compressive Modulus psi D695 300000
Hardness, Rockwell R D785 80
IZOD Impact Strength Notched ft-lb/in D256 0.6
Thermal PropertiesUnitsASTMResults
Coeffcient of Linear Thermal Expansion (x 10^-5 in./in./°F) 6.0
Heat Deflection Temp at 264 psi °F 244
Melting Temperature °F 347
Max Operating Temp. °F
Thermal Conductivity BTU-in/ft²-hr-°F
Flammability Rating
Electrical PropertiesUnitsASTMResults
Dielectric Strength. 1/8″ th. V/mil D149 400
Dielectric Constant @1 MHz 3.1
Dissipation Factor@1 MHz D150
Volume Resistivity, 50% RH ohm-cm D257

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.


  • Bushings
  • Bearings
  • Seals
  • Gaskets
  • Valve seats


  • Excellent Wear Characteristics
  • Self Lubricating
  • Low coefficeient of friction
  • Maximum unmodified toughness
  • Superior load bearing characteristics
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