It is not the purpose of the ORNL-led materials compatibility studies to define the acceptable limits of meterial performance or to rate individual materials. Rather, the purpose of this study was to measure critical property changes (volume, hardness, mass, etc.) for representative classes of dispenser materials in ethanol-blend test fluids. The following paper is a selected summary of the report entitled, "Intermediate Ethanol Blends Infrastructure Materials Compatability Study: Elastomers, Metals, and Sealants".