A cooling system for a turbine exhaust assembly comprises an annular case, a flowpath ring and a splash plate. A first protecting member is positioned between the fluoropolymer O-ring seal and the casing portion and the first protecting member consists of a polymer and hydroxyapatite. A ground patch may be adjacent the front side of the dielectric substrate that is electrically connected to the ground plane and spaced apart from and at least partially overlapping the antenna. The assembly also includes a conduit having first and second ends and first and second apertures adjacent to the first and second ends, respectively.