Abstract: Connectors may be used for connecting case settings in high temperature wells, such as geothermal or oil wells. The connector is simple in design and is able to take up thermal expansion due to temperature change when high temperature media starts to flow through the casings and when the well needs to be cooled down for maintenance.

Abstract: The invention relates to a connector for connecting casing segments used in wells drilled in high temperature areas and for transport of high temperature media, the connector comprising: a hollow tubular main body 1 with a first tubular sleeve opening 2 to be attached to first casing 4 and a second tubular sleeve opening 3 to be attached to a second casing 5, an inwardly facing circumferential spacing 21 axially extending between an inwardly extending upper rim 11 in proximity to the first tubular sleeve opening 2 and an inwardly extending central rim 13, an inner tubular member 7 extending radially within the spacing 21, said inner tubular member comprising a first circumferential engaging zone 8 for engaging a mating engaging zone of an end of said first casing 4, a second circumferential engaging zone 10 in proximity to the second tubular sleeve opening 3, for engaging a mating engaging zone of an end of the second casing 5, characterised in that the inner tubular member 7 is shorter in the axial direction