Plastic Machining Inc. has extensive experience in machining Delrin® parts and is able to make them to your specifications or help you design parts to fit your needs.  Processing and machining of Delrin® parts take place in a completely controlled environment, and complete records of our products are maintained.  Excellence is built into every part that we machine.

For an affordable quote on your custom Delrin® parts, please e-mail us, call us at 888-761-4262, or use our contact form.

Material Description

Delrin® is the homopolymer version of Acetal.

Acetal homopolymer made with Delrin® offers slightly higher mechanical properties than acetal copolymer but may contain a low-density center, especially in large cross-sections.  This homopolymer also offers a little less chemical resistance than copolymer acetal.  For example, Delrin® is ideal for small diameter, thin-walled bushings that benefit from the additional strength and rigidity of homopolymer acetal.

Delrin® is available in black and natural (off-white) colors.

See also: Acetal Plastic Machined Parts

Notable Material Features

  • High mechanical strength, dimensional stability, and rigidity
  • Very low moisture absorption
  • Good wear and abrasion resistance
  • Wide range of chemical resistance (including hydrocarbons, neutral chemicals, and many solvents)
  • Natural lubricity

Grades Of Delrin

Delrin® (unfilled)

Acetal homopolymer offers slightly higher mechanical properties than acetal copolymer but may contain a low-density center (also known as “centerline porosity”), especially in large cross-sections.  The homopolymer also gives slightly less chemical resistance than copolymer acetal.  For example, Delrin® is ideal for small diameter, thin-walled bushings that benefit from the additional strength and rigidity of homopolymer acetal.  Delrin® is available in natural and black.

Delrin® AF (PTFE-filled) Brown

This material is manufactured from Delrin® homopolymer resin which has been uniformly filled with a dispersion of PTFE fibers.  Delrin® AF is a unique thermoplastic material for use in moving parts in which low friction and long wear life are important.  It retains 90% of the mechanical strength of unfilled Acetal homopolymer while offering very low friction.

Delrin® 150 SA natural

Standard general purpose, unfilled acetal.  This grade has the best impact toughness of all unfilled Delrin® products.

Delrin® 100 Black

This is the black equivalent to the 150 SA.  It has the best toughness of any standard acetal. It is also UV stabilized.

Delrin® 550 SA natural

A general purpose, unfilled acetal.  This grade has the best machinability of all standard Delrin®.

Delrin® 507 Black

This is the black equivalent to the 550 SA.  It has the best machinability of all standard acetal grades.  This grade has outstanding UV stabilization.

Delrin® 570

This grade has 15% or 20% glass fiber filler.  It has much greater mechanical properties over unfilled acetals.

Delrin® Machined Part

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