Rubber hoses reinforced with carbon fiber fabric (kevlar). They are predominantly specialized in form. The fastening of the hoses stretched over the fittings is carried out with elastic clamps made of sheet spring steel, equipped with special grips. The clamp develops a significant clamping force and wraps around the hose along the entire outer diameter.
The hoses do not fit directly onto the radiator fittings; they are fixed with clamps on plastic elbows, and those, in turn, are mounted with quick-clamping elements on the radiator fittings. To prevent opening, the mentioned quick-clamping elements are provided with elastic fuses and round steel wire.