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 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.