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High‑Viscosity PEEK Compounds: Optimal for Injection Molding and Extrusion

Evonik’s latest high‑viscosity PEEK, Vestakeep 4500 G, expands the company’s portfolio of high‑performance PEEK products. The grade’s exceptional melt stiffness streamlines extrusion processing, while its rapid crystallization reduces injection‑molding cycle times. Finished parts are easy to eject and retain excellent dimensional stability.

Evonik offers a spectrum of PEEK formulations—from low‑viscosity to high‑viscosity molding compounds, granules, and powders, with options unreinforced or reinforced with glass or carbon fibers. Their superior thermal stability, chemical resistance, and ductility make them ideal substitutes for metal parts in lightweight, high‑performance applications.

Compared with the market‑popular Vestakeep L4000 G, the new 4500 G offers a higher crystallization rate and improved flowability, delivering superior melt stiffness and temperature resilience during processing. Its naturally lighter hue sets it apart visually. These attributes broaden the scope of 4500 G across diverse engineering applications.

Resin

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