Heating cartridge for a thermostatic member, and thermostatic valve comprising such a cartridge

A heating cartridge for a thermostatic element, including:

• a tube, which is thermally conductive and which is suitable for being immersed in a thermodilatable material of the thermostatic element, the tube comprising a cylindrical body, centered on a longitudinal axis and extending axially with a flare,
• an electric heater arranged inside the cylindrical body,
• a base made of a plastic material:
• secured to the tube by overmolding of the flare of the tube,
• supports an electric connection between the electric heater and an external current source, and
• is received in a housing of a casing, and
• a seal, which is attached to the base comprising:
• a first part which, when the base is received in the housing of the casing, is pressed radially against the casing in the housing so as to seal inside of the housing, and
• a second part, which is separate from the first part of the seal and which is pressed radially against the cylindrical body of the tube so as to seal an overmolding interface between the flare of the tube and the base.