PET Machining | Polyester Machined Parts | Penta Precision


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PET (Polyester) Machining

A Guide to PET/Polyester CNC Machined Parts: Properties, Applications and Design Considerations

What is PET?Glass Filled PET CNC Machined Prototype

Polyethylene terephthalate (PET) is a type of semi-aromatic Polyester. PET is a thermoplastic commonly known under the brand name Ertalyte®. It is a naturally colourless and semi-cristalline material.

The most widely used polyester, PET is readily available and relatively inexpensive.

It is a tough, dimensionally stable plastic that offers excellent wear resistance and mechanical strength. It is often reinforced with glass fibers or compounded with silicates or graphite in engineering applications to improve strength and rigidity.

Main Attributes of PET:

  • Relatively high density polyester
  • High strength
  • High hardness and rigity
  • Exceptionally high strength to weight ratio
  • Good creep resistance, even at elevated temperatures
  • Extremely low moisture absorption
  • Outstanding dimensional stability
  • Good temperature stability
  • Good dimensional stability
  • Good chemical resistance
  • Good adhesion and welding ability
  • Excellent wear resistance
  • Excellent stain resistance
  • Good electrical insulating properties
  • Good resistance to high energy radiation
  • Food (FDA) compliant
  • Very good heat and heat ageing resistance
  • Can be used at temperatures from -20 °C to +115 °C
  • Shatterproof
  • Recyclable


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 PET can be found in the tabs below. Please note: this information is provided as a guide only.

Polyester Machining Service - PET Milling & Turning

Penta Precision supplies highly accurate PET machined parts throughout the UK. Customers turn to us when they have had quality and delivery issues with their existing suppliers and need a reliable precision machining partner.

We communicate well with customers, we take care with the projects placed with us and we are consistent in our service delivery. See our Proven Process page to find out more about our winning formula.

"Penta provide an excellent service from start to end. Friendly and knowledgeable consultant and advice, superb communication throughout, outstanding attention to detail, flawless engineering and machining, on time supply, transparent pricing, clear and accurate paperwork. A genuine pleasure to do business with." Simon - Head of Fleet Maintenance

Penta Precision provides the following PET machining services: 

Reasons to Choose Penta:

We are regularly machining PET 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 PET machining requirements, here's a list of ways to get in touch with us.

Want to know more about Penta?

Can we meet your
PET machining needs?
Call our engineering team on
023 9266 8334
or contact us via our email form

"Penta Precision offers a highly professional, competitive and above all quality service. As one of our approved suppliers, we look forward to continuing to benefit from the close and ever-improving relationship." Adrian - Purchasing

Tel: 023 9266 8334

Fax: 023 9266 8335

Connect with us:

Penta Precision Engineering Ltd

Aspen House

Airport Service Road




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