Delrin CNC Machined Parts & Properties | Penta Precision

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Delrin Machining, Properties & Components

What is Delrin®?

Delrin is a brand name for an Acetal homopolymer made solely by DuPont™. Together with Acetal copolymers, Delrin is an engineering plastic known for being amongst the strongest and stiffest of all thermoplastics.

Main Attributes of Delrin®:

  • Dimensional stability before, during and after machining
  • Low moisture absorption
  • Good chemical resistance to fuels and solvents
  • Low friction and high wear resistance
  • Wide operating temperature range (-40°C to 120°C)
  • Good compressive strength
  • Good shock resistance
  • Easy to machine

Delrin in comparison to Acetal Copolymers:

  • Stiffer
  • Higher flexural modulus at room temperature
  • Higher impact strengths at room temperatures and low temperatures
  • Tensile strength is approximately 10-15% higher than comparable copolymers
  • Slightly higher continuous use temperature than copolymer (95°C vs. 90°C)
  • Lower thermal expansion rate
  • Better wear resistance

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Detailed information about Delrin for designers including UK stock sizes and technical properties can be found in the tabs below. Please note: this information is provided as a guide only. All information is based on our present knowledge and is given in good faith. No liability will be accepted by Penta Precision in respect of any action taken by any third party in reliance thereon.

Similar or obsolete designation and trade names

You may also see Delrin referred to as:

Here at Penta Precision, we have significant expertise in Delrin so please do pick up the phone if you would like to chat through your options when it comes to grades of Delrin and your application.

Delrin Components, Applications & Industries

Here are some examples of the industries and components for which Delrin is appropriate. This is by no means an exhaustive list. Please do get in touch if you are considering using Delrin and we can talk through your project with you.

Typical Components & Applications:
  • High load mechanical applications
  • Brackets
  • Gears
  • Safety Restraints
  • Bearings
  • Handles
  • Rollers
  • Guides
Industry Examples:

Typically used in highly regulated industries such as:

  • Aerospace
  • Nuclear
  • Pharmaceutical
  • Electronics

    Black Delrin Machined Parts / R&D

    Black Delrin Machined Parts - R&D

    Delrin® Machining Service

    Penta Precision provides highly accurate machined parts in Delrin. Customers turn to us when they have had quality and delivery issues with their existing suppliers and need a reliable precision machining partner.

    Penta Precision provides the following Delrin plastic machining services: 

    Reasons to Choose Penta:

    We are regularly machining Delrin for customers all over the UK. Our customers depend on our machining expertise as well as our outstanding delivery performance, to machine the highest quality parts. Contact us to discuss how we can help you with your Delrin machining requirements. 

    Can we meet your
    Delrin machining needs?
    Call our engineering team on
    +44 (0) 23 9266 8334
    or contact us via our email form

    ''Just to say that the quality of the parts you produce for us (in particular the small PEEK parts) is absolutely excellent. No other suppliers we've previously used have been able to match this quality, so Many Thanks.'' Chris - Design Engineer

    Tel: +44 (0) 2392 668 334

    Fax: +44 (0) 2392 668 335

    Connect with us:

    Penta Precision Engineering Ltd

    Aspen House

    Airport Service Road

    Portsmouth

    Hampshire

    PO3 5RA

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