PEEK  (PolyEtherEther-Ketone), is a high temperature, high performance engineering polymer for use when the Standard Acetal (POM)Polymer does not meet the performance requirements of the application.  

These PEEK plastic bearings are fitted with either SS316 or glass balls.

PEEK offers chemical and water resistance similar to PPS (Polyphenylene Sulfide), but can operate at higher temperatures. PEEK can be used continuously to 480°F (250°C) and in hot water or steam without permanent loss in physical properties.