When using a DW contact as safety device, this bottom sealing has a bigger air movement, which improves operational reliability. The connection of the sealing is adapted to the prevailing in the market and by IDD-Parts deliverable aluminum profiles. The inside diameter is 37mm. Associated end plugs have part number 106001012 This sealing fits among others the following profiles: item number 105002001, 105002003, 105002005, 105002006, 105002 008, 105002012.