Plastics housing with: a housing component composed of a first thermoset plastic or thermoplastic respectively modified with thermally conductive fillers; and with at least one sealing element composed of a second, resilient plastic, where the at least one sealing element has been cohesively bonded to the housing component or has been moulded in interlocking manner onto the housing component ; and with at least one covering cap placed onto the housing component at an end section of the housing component , where the sealing element seals a transitional area of the housing component in relation to the covering cap placed onto the housing component , where the plastics housing has a first covering cap placed onto the housing component at a first end section of the housing component , and has a second covering cap placed onto the housing component at a second end section of the housing component , said second end section being opposite to the first end section , where the housing component has a first transitional area at the first end section and has a second transitional area at the second end section , the first transitional area and the second transitional area respectively being configured in stepped manner and adjacent to a peripheral region of the housing component , and where the plastics housing has a first sealing element which, at the first end section of the housing component , has been cohesively bonded to the housing component or has been moulded in interlocking manner onto the housing component , and where the plastics housing has a second sealing element which, at the second end section of the housing component , has been cohesively bonded to the housing component or has been moulded in interlocking manner onto the housing component . a housing component composed of a first thermoset plastic or thermoplastic respectively modified with thermally conductive fillers; and with at least one sealing element composed of a second, resilient plastic, where the at least one sealing element has been cohesively bonded to the housing component or has been moulded in interlocking manner onto the housing component ; and with at least one covering cap placed onto the housing component at an end section of the housing component , where the sealing element seals a transitional area of the housing component in relation to the covering cap placed onto the housing component , where the plastics housing has a first covering cap placed onto the housing component at a first end section of the housing component , and has a second covering cap placed onto the housing component at a second end section of the housing component , said second end section being opposite to the first end section , where the housing component has a first transitional area at the first end section and has a second transitional area at the second end section , the first transitional area and the second transitional area respectively being configured in stepped manner and adjacent to a peripheral region of the housing component , and where the plastics housing has a first sealing element which, at the first end section of the housing component , has been cohesively bonded to the housing component or has been moulded in interlocking manner onto the housing component , and where the plastics housing has a second sealing element which, at the second end section of the housing component , has been cohesively bonded to the housing component or has been moulded in interlocking manner onto the housing component . <EOS>