1 Scope

This specification covers requirements for an ex-truded multilayered vapor line. The lines described by this specification shall be less permeable than GM6264M. These tubings may have a smooth bore tube construction. Other documents which describe the performance and dimensional requirements of these components and assemblies manufactured from these compo-nents are GM9676P and chart #10093203. In addition to the test requirements listed in this spec-ification, additional fuel recirculation and/or perme-ation testing may be required for validation of the tub-ing and/or quick-connectors used in the fuel line as-sembly. Any additional requirements are to be defined by the GM Materials Engineer.