Automotive Fuel Hoses

Automotive Fuel Hoses Made for Today’s Lighter Engines

Today’s smaller, lighter enginesare turning up the heatand pressureon automotive fuel hoses.

DuPont hasa range of materials and specialized applications designed to meet the challenges and support next-generation performance and fuel efficiency.

Vamac® Outperforms in Aging Tests

Automotive fuel hoses typically have a premium inner layer to provide permeation resistance, and a thicker cover layer to providea cost-effective hose that can meet high temperature requirements.  Some fuel hoses have to withstand relatively high temperatures because they route through the engine compartments.  A Vamac® cover can combine good fuel resistance and high temperature properties. The initial adhesion between the two layers is very good, and the adhesion is still very good after heat aging, providing overall durability.

Vamac®G, GXF or Ultra HT polymers have been used in the hose cover compounds. The optimum grade depends on the end-use requirements. The Vamac® Ultra HT compounds will have the best dynamic properties  and the best heat aging, while the Vamac® G will provide the most cost effective compound.

DuPont Helps Automakers Meet Regulations

DuPont is helping automotive OEMs to meet Euro 5 and the next generation Euro 6 emission regulations for hoses, ducts, gaskets, and other underhood components. This requires helping customers find the right match of materials with the best processesto meet the specificperformance, cost, workability and timing needs of each customer.

A cover layer of Vamac®meets the needs of many customers--providing the automotive performance requirements of mechanical strength, fuel aging, hydrocarbon permeation resistance and high-temperature performance at an optimum price.

*The Viton® fluoroelastomer business is now part of The Chemours Company.  Visit for more information.