Vestakeep® 4000GF30 30% Glass Fiber Reinforced PEEK Granules

Vestakeep® 4000GF30 30% Glass Fiber Reinforced PEEK Granules combine high-temperature PEEK with a glass fiber network that raises rigidity, improves creep resistance, and keeps dimensions predictable in thin, complex parts. Formulated for injection molding and extrusion, it flows into ribs, bosses and holds edges cleanly after demold. Compared with unfilled grades, it resists warpage during cool-down and keeps fasteners tight, so housings and brackets stay quiet in service. Aerospace, transportation, energy, and industrial equipment makers specify 4000GF30 for structural covers, pump and valve components, manifolds, and electrical hardware that must remain insulating near heat and chemicals. The glass reinforcement adds stiffness without giving up the chemical and hydrolysis resistance PEEK is known for, supporting long life with cleaners, fuels, and hydraulic fluids. In development and production, the granules enable thin-wall, weight-saving designs that machine crisply and tolerate thermal cycling without drift. For teams replacing metal in compact assemblies, 4000GF30 offers a stable, halogen-free platform that balances strength, dimensional control, and processability.