Lamp with a base at one end

A lamp with a base at one end, in particular a high-pressure lamp, with a light bulb sealed in a vacuum-tight fashion, with the latter being surrounded by an outer bulb and an enveloping part, with a base supporting firstly the outer bulb and secondly the enveloping part, having the following features: a) the base has a base insulator which is produced from an insulating material and has a central opening which holds the outer bulb; b) the base insulator has a circular segment with a plateau; c) the enveloping part has a circular opening with a radially projecting edge which has a lower and upper contact face relative to the base on the base side, the lower contact face of the edge fitting together with the upper plateau of the circular, radially projecting segment on the base insulator; d) the enveloping part is attached to the base insulator by a cement-free mechanical holding mechanism, with an annular damping element being inserted between enveloping bulb and base insulator.