Abstract: A connection for a fluid includes a pipe; a connector in which a fluid is flows, and a housing in which the pipe is at least partially inserted. The pipe and the connector are in fluidic communication. A gasket is arranged in the housing and radially interposed between the pipe and the connector to prevent any leakage of fluid between the pipe and the connector. A closing element in which the pipe is inserted, is mounted both to the pipe (2) and to the connector by two respective welds ensuring fluid tightness.

Abstract: A composite exhibiting a thermoelectric effect is provided. The composite comprises a metal sulphosalt, an electrically conductive polymer, and fibres. A method of making a composite material is also provided, comprising mixing the components. The three components work together to provide a low-cost thermoelectric composite that utilises readily available materials. A friction material and a thermoelectric device comprising the composite of the invention are also discussed. Preferably a copper sulphosalt is used, such as tetrahedrite. Preferably man-made vitreous fibres and a binder are used.