PEEK (Polyether Ether Ketone) fittings are highly durable, chemical-resistant components commonly used in fluid handling systems, including HPLC (High- Performance Liquid Chromatography), gas chromatography (GC), and other industrial applications. PEEK is a high-performance thermoplastic that is known for its excellent mechanical properties, chemical resistance, and thermal stability, making it ideal for applications where durability, precision, and resistance to harsh environments are critical.