Polyetheretherketone (PEEK) is a high-performance special polymer material with excellent physical and chemical properties. Its molecular structure contains repeating ketone and ether linkages, making it a semi-crystalline polymer.
PEEK exhibits outstanding heat resistance, chemical corrosion resistance, mechanical strength, wear resistance, and electrical insulation, making it one of the highest-performing thermoplastics available today.
PEEK has a continuous service temperature of up to 260°C, a melting point as high as 343°C, a heat deflection temperature under load of 316°C, and can withstand short-term temperatures up to 300°C. In addition, PEEK offers an excellent balance of rigidity and flexibility, with exceptional fatigue resistance under alternating stress, comparable to alloy materials. It features superior wear resistance, allowing use in harsh environments including high/low temperatures, high-load/low-speed conditions, dry friction or oil immersion, liquids, solid dust, and organic solvents. PEEK also demonstrates excellent corrosion resistance: it is insoluble in almost all solvents, strong acids, and strong bases (except concentrated sulfuric acid), and exhibits excellent hydrolysis resistance, resulting in extremely high chemical stability.
PEEK sealing parts are injection-molded sealing rings made of polyetheretherketone (PEEK) material, widely used in various industries due to their exceptional performance.
Aerospace Industry
PEEK sealing parts are used for sealing key components such as aircraft engines, gas turbines, and hydraulic systems, including turbine blade seals, shaft seals, and combustion chamber seals in turbojet engines.
In aerospace instruments and control systems, PEEK seals are applied to pressure sensors, temperature sensors, and valves.
Chemical Industry
PEEK sealing parts are widely used in chemical processing, including sealing for centrifugal pumps, gear pumps, and plunger pumps to ensure effective sealing and prevent leakage.
They also play a critical role in various valve types (e.g., ball valves, butterfly valves, gate valves, globe valves).
Fuel Systems
PEEK sealing parts are used in aviation fuel system applications, such as fuel pumps, injectors, fuel filters, and connectors, ensuring the stability and safety of fuel systems.
Medical Industry
In medical equipment, PEEK sealing parts are used in devices like artificial joints and pacemakers. Their non-toxic, odorless, and bacteria-resistant properties meet the hygiene standards of the medical industry.
Pharmaceutical Industry
PEEK sealing parts are used in pharmaceutical equipment such as reactors, mixers, centrifuges, and filters, protecting drugs from external contamination. In pharmaceutical laboratories, they seal equipment including reactors, centrifuges, gas chromatographs, and liquid chromatographs.
Food Processing
PEEK sealing parts are widely used in food processing equipment such as mixers, extruders, cookware, and filters. They provide high-temperature, high-pressure, and corrosion-resistant sealing performance, ensuring safety and reliability in food processing.
Other Industrial Fields
PEEK sealing parts are also used in oil & gas, power generation, water treatment, and other industrial applications to ensure the stability and safety of equipment and systems.
With their outstanding heat resistance, chemical corrosion resistance, mechanical strength, wear resistance, and electrical insulation, PEEK sealing parts have become critical sealing components in multiple industries. As technology advances and industrial production develops, the application scope of PEEK sealing parts will continue to expand, providing more reliable and efficient sealing solutions for various sectors.