Many hose types are designed with the spring steel wire firmly embedded in the wall. This strong adhesion is a key prerequisite of the product’s stability, resistance to overpressure and axial stiffness, which in turn have an important influence on hose service life. The operating conditions, for example oils or solvents diffusing into the wall, a combination of mechanical and dynamic loads and especially high or low temperatures, frequently represent a formidable obstacle to achieving permanent adhesion between the spring steel wire and the wall.
Our longstanding experience has taught us that detached wires provoke increased and asymmetric rippling of the hose, usually resulting in a significantly shorter service life, substantially higher pressure losses and long-term disruptions to the delivery process.
Hoses manufactured using our special, highly advanced, multistage adhesion process are marked with this symbol. The exceptionally long service life realised with these products – even when subjected to severe combined loads – would otherwise remain unattainable.
