Drop-down seal and building part

A drop-down seal for a building part, wherein the drop-down seal comprises:

• a housing defining a longitudinal direction,
• a sealing strip which is raisable and lowerable in said housing, and
• a spring-loaded lowering mechanism which brings about automatic lowering of the sealing strip during closing of the building part,
• wherein the lowering mechanism is connected to a slide having an end which protrudes beyond the housing, the slide activating the lowering mechanism during closing of the building part,
• wherein the protruding end of the slide is operatively connected to an arm protruding laterally beyond the housing, wherein movement of the arm causes the slide to move to activate the lowering mechanism during closing of the building part,
• wherein the lowering mechanism comprises at least one spring configured to lower and raise the sealing strip, the at least one spring extending in the longitudinal direction of the housing and having a first end, a second end and a middle region,
• wherein the first end is rigidly connected to the slide defining a first fastening point, the middle region is connected to the sealing strip defining a second fastening point and the second end is fastened to the housing defining a third fastening point,
• wherein the second end is pivotable relative to the housing,
• wherein the first, second and third fastening points are spaced apart from each other in the longitudinal direction of the housing,
• wherein the third fastening point is arranged closer to the protruding end of the slide than the first fastening point, and
• wherein the arm pulls the slide when the building part is closed, the slide thereby applying a tension to the lowering mechanism.