Fuel-Line Systems

VESTAMID^® has been the material of choice for the fuel lines of renowned automobile manufacturers for about 40 years. Worldwide, it is the most widely used polyamide 12 in fuel lines. Consistently high product quality, dependable delivery, and excellent service, as well as innovative solutions in the development of our tubing compounds have helped us achieve this position and maintain it.

We responded to the new requirements of a variety of automobile manufacturers by developing a series of extrusion compounds in subtly different gradations. They differ primarily with regard to

• flexibility and burst pressure
• and, in some instances, low-temperature impact strength.
• Their barrier effect to hydrocarbon permeation can also be custom-modified.
• The strain at break used as a quality criterion by many automobile manufacturers for their pipes depends primarily on the processing conditions and calibration procedure. When the extrusion process is properly executed, these values are easy to achieve.

Most of the VESTAMID^® molding compounds designed for this application are suitable for both gasoline and diesel fuels. To keep up with increasing engine compartment temperatures, especially in vehicles made in Europe, we have also designed high-temperature resistant compounds. These compounds, such as VESTAMID^® LX9008 and VESTAMID^® LX9013, are specially designed for use in either gasoline or diesel systems, and should be used only in the intended system.

More than just materials development

We have collaborated on international committees for developing and improving specifications and test procedures for lines and assemblies since our work on compounds for line systems began. Based on this knowledge, we provide services such as fuel permeation measurements and test procedures for determining layer adhesion to assist customers with their development projects. Customers also have our equipment for manufacturing and testing straight or corrugated multi-layer pipes at their disposal.