Inflatable sealing unit for valves and switches for bulk goods equipment comprises an outer elastic element whose surface over a specified zone is separated from the embedded rigid element

摘要

The inflatable sealing unit with an outer element of elastic material and an inner element of rigid material is characterized by the following facts: a) the inner element (1) is embedded into the outer element (2); b) at least the surface of the outer element - which is to function as a movable membrane - over the zone C-C is separated from the inner element.