Delrin® AF Blend, Acetal Homopolymer, PTFE filled, extruded -as manufactured by Quadrant Engineering Plastic Products is a is a unique thermoplastic material for use in moving parts in which low friction and long wear are important. It is a combination of PTFE fibers uniformly dispersed in Delrin® acetal resin. This combination produces a material that has strength, toughness, dimensional stability and good machinability, plus improved wear characteristics over unfilled Delrin®. Delrin® AF Blend, most commonly supplied as a 2:1 blend of Delrin® AF100 and Delrin® 150 resins, has excellent sliding/friction properties.

Bearings made of Delrin® AF Blend sustain high loads when operating at high speeds and show reduced wear. These bearings are also essentially free of slip-stick behavior because the static and dynamic coefficient of friction are closer than with most plastics. Delrin® AF Blend retains much of the strength that is inherent in unmodified Delrin® acetal. Some properties are changed due to the addition of the softer PTFE fiber. The natural color of Delrin® AF Blend is dark brown.

Other attributes of Delrin® AF Blend acetal products include:

• Low moisture absorption
• High strength, stiffness
• Ideal for machined parts where low friction and long life is important
• Easy to machine
• Excellent dimensional stability
• Enhanced wear and friction properties over standard acetals

Engineering specifications for Delrin® AF Blend Rod are:

Engineering Notes:

In general, acetals do not perform as well in abrasive wear applications as nylons. Compensation for moisture related growth generally allows Nylatron® nylons to be used for wet, abrasive applications. If your application requires dimensional consistency in an abrasive, high humidity or submerged environment, Ertalyte® PET-P will often offer improved performance.

Note:  “Delrin® is a registered trademark of E.I. du Pont de Nemours and Company.”