VESTAMID® IN Other Line Systems

Versatile aND all around

In addition to fuel lines, VESTAMID® compounds are also used to produce other air and liquid-conveying lines. Depending on its function and the environment in which it occurs, each application emphasizes different properties, so we adapt our compounds to meet specific, individual requirements.

From clutch to  Air suspension
  • For the clutch line system, we offer VESTAMID® L compounds with particularly high resistance to engine oil, aggressive chemicals, and hydraulic fluids. Their low water absorption trough diffusion ensures that the function of the hydraulic fluid is not impaired. At high internal pressures, the lines display only minor changes in volume—especially at high temperatures—which means that the clutch pedal is subject to uniform operating forces and pressure points. 

  • Vacuum brake booster lines are exposed to temperatures up to approximately 150°C. They are placed between the brake booster and the engine, and they must have the necessary flexibility and low-temperature impact strength. In addition to generally good resistance to attack by chemicals and the ability to withstand stress cracking by air-gas mixtures, both internally and externally, good resistance to ozone is important—conditions that VESTAMID® L and E compounds are custom-tailored to satisfy entirely. 

  • Steel tubes for hydraulic brake systems in passenger cars and light utility vehicles are fitted, for better corrosion protection, with a 0.15 mm thick extrusion coating of VESTAMID® L. This must, of course, adhere well to the metal and possess good low-temperature impact strength against stone impacts, not to mention feature good chemical resistance to de-icing salt and salt-spray. 

  • Other things being equal, VESTAMID® E corrugated tubes with quick connectors are more leakproof, more durable and less costly to install than EPDM hoses for windshield washer systems. Because windshield washer fluids have become harsher as a result of the change from isopropanol to ethanol as an antifreeze, we also offer VESTAMID® L and D compounds developed specially for this application.

  • To support engine performance, tubes located near the engine block have to supply air or air-gas mixtures. To supply air, VESTAMID® L tubes are invariably used if other polyamides fail to have the requisite flexibility, low-temperature impact strength, and heat aging resistance. 

  • Because air brake lines are exposed under the entire frame of heavy and medium utility vehicles, resistance to flying stones is essential. VESTAMID® L is distinguished here by its high impact strength and low-temperature impact strength. Even construction site vehicles can always rely on their brakes. At the same time, the lines are flexible enough that they can be moved freely between the assemblies and coiled into spirals. Nowhere is the excellent chemical resistance of polyamide 12 more clearly apparent than in the area of metal connections: the zinc chloride in de-icing salt does not cause stress cracking in tubes made of VESTAMID® L. Our advanced compounds also meet the more stringent requirements for materials used to produce high burst pressure-rated air brake lines. In Europe, VESTAMID® L lines like these are used primarily in tractors, while VESTAMID® L tubes that meet the more traditional pressure requirements are used for trailers and coils.  

  • A feature that has long been widely used in utility vehicles is now being increasingly offered by manufacturers in passenger vehicles to increase comfort and safety: electronically controlled balancing of the vehicle on the road by means of an air suspension system . We have adapted the VESTAMID® L tube and connector system, already proven in trucks, to the requirements of passenger cars: standard compounds for flexible air suspension lines that are resistant to pressure and zinc chloride and that feature low-temperature impact.