Abstract: The present invention relates to a gasket (10) for a heat-charged cavity of an appliance with microwave heating function. The gasket (12) comprises a first gasket part (12), a second gasket part (14) and an interconnecting gasket part (16). The first gasket part (12), the second gasket part (14) and the interconnecting gasket part (16) are elongated and their longitudinal axes are arranged parallel to each other. The first gasket part (12) and the second gasket part (14) are impermeable for steam, vapour and/or humidity. The first gasket part (12) is made of an elastic material or a compound of elastic materials and is resistant against high temperatures. The second gasket part (14) is resistant against high temperatures and includes at least on electrically conductive material. The interconnecting gasket part (16) is resistant against high temperatures.