Assembly device e.g. for pumping out air from container, has cover and on its top side is provided with through-hole at whose outside side air outlet

摘要

Assembly device has a cover (20) and on its top side is provided with a through-hole (22), at whose outside side an air outlet opening (23) is provided. A button (30) is provided which is importable from top to bottom into the through-hole. The button has a catch (31), which contacts the cover. The button has a centrical seal (32), extending outward. The cover has a recess on its top side running downward to the through-hole.