PET Sheet

PET plastic — polyethylene terephthalate — is a semi-crystalline engineering polyester thermoplastic distinguished by excellent dimensional stability, wear resistance, and very low moisture absorption. These properties make PET material a reliable choice for precision-machined components where tight tolerances must be maintained throughout the service life of the part.

The semi-crystalline structure of PET provides consistent mechanical behavior and a smooth surface finish after machining. Low moisture uptake means parts do not swell or change dimension with humidity variations — a significant advantage over polyamides (nylon) in applications where tolerance stability is critical. PET also demonstrates good fatigue resistance and maintains mechanical performance reliably across its operating temperature range.

Typical applications include precision bushings, wear pads, pump components, guide rollers, and structural parts requiring a stable, smooth-running surface. PET is often preferred over nylon in applications where moisture-induced dimensional change cannot be tolerated and where a stiffer, harder surface is beneficial.

Ready Plastics stocks PET in rod and sheet for machined wear and structural components. Contact us or visit the PET product page for available dimensions and to request a quote.