Suction cups for milking installations for automatic and semi-automatic milk extraction, milking machines, milking stands, milking robots and automatic and semi- automatic milking systems containing teat gums or teat silicones which have the following functions: stimulation of teats, cleaning of teats, pre-milking, milking, dipping of teats, interior cleaning of teat gums, interior disinfection of teat gums; milking installations for automatic and semi- automatic milk extraction; milking machines; milking stands; milking robots; automatic and semi-automatic milking systems; accessories for milking installations for automatic and semi-automatic milk extraction, milking machines, milking stands, milking robots and automatic and semi-automatic milking systems, namely teat dip cups being dipping devices, teat gums, suction cups, milking stimulators, milking clusters, devices for automatic and semi-automatic removal of milking clusters, teat disinfection devices as well as teat spraying devices; parts, accessories and replacement parts for the aforementioned goods as well as systems consisting of the aforementioned goods.