The accessories for assembling are all the indispensable elements needed to assembly exhaust systems in automobiles in a correct way. These accessories consist on, among others, all sorts of rubber hangers, metal-rubber hangers, rubber fenders, clamp hoops, laminated and perforated gaskets, graphite, mesh, sintered and metal sealing rings, pipe connections and clamping rings, bolts, braces, springs, washers etc.