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This SAE Standard includes performance requirements for protective covers for flexible, non-metallic fuel tubing. Ultimate performance of the protective cover may be dependent on the interaction of the fuel tubing and protective cover. Therefore, it is recommended that tubing and cover combinations be tested as an assembly, where appropriate, to qualify to this document.

This SAE Standard encompasses the minimum functional requirements for fuel tubing and nonmetallic and nonrubber hose assemblies to be used in gasoline fuel injection systems. It utilizes information from the tubing standard SAE J2043, fittings and connectors SAE J2044, and protective covers SAE J2027. It is not intended to cover assemblies that operate below 30 °C (-22 °F) or above 115 °C (239 °F). In addition, this document is applicable for gasoline F.I. systems up to 5 bar (approximately 75 psig) operating pressure. It should be noted that temperatures can affect assemblies in various manners and every effort must be made to determine the operating temperature to which a specific assembly will be exposed, and design accordingly. This document does not make recommendations as to which assemblies are appropriate for different ranges of operating temperatures.

This test method described in this document covers a procedure to speciate that is, to determine the amounts of each different fuel constituent that permeates across sheets, films or slabs of plastic materials. One side of the sheet is meant to be in contact with either a liquid test fuel or a saturated test fuel vapor, the other side is meant to be exposed to an environment free of fuel. The test fuel can either be a mixture of a small (usually smaller than ten) number of hydrocarbon, alcohol and ether constituents or it can be a sample of a real automotive fuel, e.g., one that may contain hundreds of different constituents. Furthermore, Appendix A contains guidelines to speciate evaporative emissions from finished fuel system components such as fuel lines, fuel filler pipes, fuel sender units, connectors and valves.

This test method described in this document covers a procedure to speciate that is, to determine the amounts of each different fuel constituent that permeates across sheets, films or slabs of plastic materials. One side of the sheet is meant to be in contact with either a liquid test fuel or a saturated test fuel vapor, the other side is meant to be exposed to an environment free of fuel. The test fuel can either be a mixture of a small (usually smaller than ten) number of hydrocarbon, alcohol and ether constituents or it can be a sample of a real automotive fuel, e.g., one that may contain hundreds of different constituents. Furthermore, Appendix A contains guidelines to speciate evaporative emissions from finished fuel system components such as fuel lines, fuel filler pipes, fuel sender units, connectors and valves.