View Tameson's range of hydraulic couplings. Hydraulic couplings have a wide variety of uses. While the most common use is in industrial hydraulics, they are also used in temperature control applications of plastic processing machines and other applications that use liquids at relatively high pressure. For high-pressure applications that need a high degree of chemical resistance, we recommend using stainless steel couplings. Brass couplings are more suited for neutral and non-corrosive media. For a clear insight into these materials' chemical resistance, look at our chemical resistance guidelines. Stainless steel and brass couplings can be used between -25°C to +200°C. If couplings are needed for operations where chemical resistance plays no role, couplings made of galvanized steel will be sufficient. These can operate in temperature ranges between -25°C to +120°C. Plastic couplings are also available, made from polyoxymethylene; these couplings are suitable for water, compressed air, mild chemicals, ink, vacuums, and food processing applications and temperature ranges of -20°C to +90°C.