Plug for closing opening in concrete wall, during production of concrete wall, has front region with conical tapering point having sealing lips enclosing in front region, and back region with larger diameter than front region

摘要

The plug (8) has a front region (14) to be driven into an opening (9) and a back region (11) with a flat back (12). An elastomer has a shore hardness of maximally 90. The front region has a conical tapering point (10) with Christmas-tree-like sealing lips (15) enclosing in the front region. The back region has a larger diameter than the front region and is formed conically tapering to the front region. The sealing lips of the front region are arranged one behind the other, where the plug is made of ethylene propylene diene monomer rubber.