Spiral hoses made of polyurethane (PU) PUR hose coupling sets. High-quality one-hand quick-release coupling or safety coupling made of galvanized steel and brass for high flow rates, specially designed for all applications with high mechanical wear, impact-resistant and vibration-resistant design for demanding applications. Polyurethane hose Extremely flexible, spiral hose: 10 bar Medium and ambient temperature: -20 °C. to +60 °C.