Delrin® AF is a mix of Delrin resin with either Teflon powder or Teflon fiber. The standard Delrin AF is with 13% Teflon powder fill. Delrin AF 100 with a Teflon fiber fill is also available in either 13% or 20%. The 13% fiber mix is more readily available. The 20% mix is a custom run. The color of the material is dark brown.
Delrin AF with the powder fill is FDA and USDA compliant. Delrin AF 100 with the 13% fiber fill is only NSF compliant. It is a unique thermoplastic material for use in moving parts in which low friction and long wear are important. Delrin AF 100 fiber fill offers a slightly higher limiting PV and lower coefficient of friction than standard Delrin AF blend due to the additional Teflon content. However, the additional Teflon typically decreases the wear capability, tensile and impact strength. Delrin AF 100 with Teflon fiber generally has a higher cost than the standard Delrin AF. Delrin AF has strength, toughness, dimensional stability, and good machinability.
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