Machining Delrin | Machined Delrin Parts | Penta Precision       +44 (0) 2392 668 334

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Delrin Machining

A Guide to Delrin CNC Machined Parts: Properties, Applications and Design Considerations

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


Need a part machined by an experienced and reliable components manufacturer? Simply complete our short form to receive your no obligation quotation.

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 - Delrin Milling & Turning

    Penta Precision provides highly accurate Delrin machined parts. 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 machining services: 

    • CNC milling – prototypes & large batch runs
    • CNC turning – prototypes & large batch runs
    • Insert installation
    • Part marking
    • Manual milling
    • Manual turning
    • Machining design advice
    • Machining drawing service

    Reasons to Choose Penta:

    • ISO 9001:2015 quality assurance
    • Consistent high quality machined parts
    • Reliable delivery dates - our track record speaks volumes
    • Exceptional customer service and communication
    • Machining design advice
    • Extensive experience in our field
    What Makes Penta Different?

    There are 3 key elements that run through the core of our company and staff at every level to ensure we deliver an exemplary service that goes above and beyond. We like to call these our 3 C's:

    • We Communicate well 
    • We take Care at each stage
    • Our service is Consistent

    See our ‘Proven Process’ page to find out more

    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. If you'd like to discuss how we can help you with your Delrin machining requirements, here's a list of ways to get in touch with us.

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

    “What I appreciate the most about working with Penta is the ease of placing orders, they keep everyone happy, and they deliver the expected results” Gail - Buyer

    Tel: +44 (0) 2392 668 334

    Fax: +44 (0) 2392 668 335

    Connect with us:

    Penta Precision Engineering Ltd

    Aspen House

    Airport Service Road



    PO3 5RA

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