A novel pipe cover is disclosed that can suppress thermal deterioration in a member that is positioned opposite to the pipe, and can control the temperature inside the pipe within a given range, even when a high-temperature fluid circulates through the pipe. The pipe cover is used to cover the outer periphery of a pipe, and includes a base that is formed of a tubular heat insulator, and a surface member that covers the outer surface of the base, a heat radiation section and a heat radiation-suppressing section being provided on the outer surface of the surface member, and the emissivity of the heat radiation section at a wavelength of 2 to 15 m being higher than the emissivity of the heat radiation-suppressing section at a wavelength of 2 to 15 m.

System for interconnecting a urea-based reducing agent injector to an exhaust gas post-treatment device including an injector, a flange arranged to couple the injector to an exhaust gas line, a gasket arranged between the injector and the flange, wherein the gasket is a sandwich, formed by two external layers and an intermediate layer formed by insulating material.

A heat-shielding cover operatively adapted for being installed adjacent to an exhaust system part (C) so as to cover the same; the heat-shielding cover including a fabric (10) provided with a prescribed shape and comprising inorganic fibers, and a mixture (11) that impregnates the fabric (10), with the mixture comprising an inorganic binder, inorganic filler particles and water. The mixture is dried so as to be rigid enough to maintain the shape of the fabric (10). The heat-shielding cover covers an exhaust system part, where the heat-shielding cover has a simple structure, is less likely to be, or is not, subject to warping in the place of installation due to thermal expansion and contraction of the heat-shielding cover, and moreover is less, or is not, susceptible to galvanic corrosion, even as a result of direct installation using an installation member.