If the element reaches the target temperature quickly and maintains even heat across the surface, it is functioning correctly and is brand new.
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By vevor
Heating elements for cup presses often appear "distressed" or discolored due to factory heat-testing and the high-temperature oxidation of the internal heating wires.
The yellowish or brownish tint on the heating pad or metal casing is a result of the bonding process and industrial adhesives, not actual rust from age or use.
By vevor
