The rectangular corrugated hose reinforced with a durable steel spiral is designed for reliable performance in automotive and industrial cooling systems, ensuring safe transport of hot water and antifreeze fluids. Its construction guarantees excellent vacuum resistance, while the inner layer made of high‑quality black CR rubber provides outstanding durability against heat and cooling agents. Reinforced with a strong synthetic cord and steel spiral, the hose maintains flexibility and strength even under demanding conditions. The outer layer, also crafted from black CR rubber, offers superior protection against overheating, oil exposure, and aging, extending the product’s service life. With a working pressure of up to 4 bar and an impressive operating temperature range from -40°C to +100°C, this hose delivers consistent efficiency and reliability. Engineered for long‑lasting performance, it is the ideal solution for manufacturers and service providers seeking a robust, versatile, and maintenance‑friendly component for modern cooling systems.