Vacuum valve, in particular a vacuum control valve, for controlling a volume flow or mass flow and/or for interrupting a flow path in a gas-tight manner, comprising • a valve seat having ∘ a valve opening , which defines an opening axis , and ∘ a first sealing surface, which runs around the valve opening , and • a closure element having a second sealing surface which corresponds to the first sealing surface, in particular with regard to the course and dimension of the sealing surface, wherein • the first sealing surface and/or the second sealing surface comprises an at least two-component material composite, and the material composite comprises a metal carrier component and a polymer-based sealing material , and • the sealing material is applied to the carrier component along a sealing surface course, in particular is vulcanized onto the latter, with a defined profile, in particular with a defined height in the direction of the surface normal of the carrier component, characterized in that • the metal carrier component defines an inner carrier region and an outer carrier region , • the metal carrier component has in the region of the respective sealing surface a plurality of defined depressions (32a-f, 42) extending into the inner carrier region , wherein each of the depressions (32a-f, 42) respectively defines a volume and a depth (t), and • the sealing material is applied to the carrier component such that ∘ the defined profile of the sealing material is present on the outer carrier region and ∘ a portion of the sealing material extends at least into some of the depressions (32a-f, 42) of the carrier component and fills these to a proportion of at least 50% with regard to volume and/or depth, in particular wherein the two-component material composite is produced by a method according to any one of claims 12 to 14. • a valve seat having ∘ a valve opening , which defines an opening axis , and ∘ a first sealing surface, which runs around the valve opening , and ∘ a valve opening , which defines an opening axis , and ∘ a first sealing surface, which runs around the valve opening , and • a closure element having a second sealing surface which corresponds to the first sealing surface, in particular with regard to the course and dimension of the sealing surface, • the first sealing surface and/or the second sealing surface comprises an at least two-component material composite, and the material composite comprises a metal carrier component and a polymer-based sealing material , and • the sealing material is applied to the carrier component along a sealing surface course, in particular is vulcanized onto the latter, with a defined profile, in particular with a defined height in the direction of the surface normal of the carrier component, • the metal carrier component defines an inner carrier region and an outer carrier region , • the metal carrier component has in the region of the respective sealing surface a plurality of defined depressions (32a-f, 42) extending into the inner carrier region , wherein each of the depressions (32a-f, 42) respectively defines a volume and a depth (t), and • the sealing material is applied to the carrier component such that ∘ the defined profile of the sealing material is present on the outer carrier region and ∘ a portion of the sealing material extends at least into some of the depressions (32a-f, 42) of the carrier component and fills these to a proportion of at least 50% with regard to volume and/or depth, ∘ the defined profile of the sealing material is present on the outer carrier region and ∘ a portion of the sealing material extends at least into some of the depressions (32a-f, 42) of the carrier component and fills these to a proportion of at least 50% with regard to volume and/or depth, <EOS>